2010-02-03 11:53:14 +08:00
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#define _FILE_OFFSET_BITS 64
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2009-12-12 07:24:02 +08:00
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#include <linux/kernel.h>
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perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
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#include <byteswap.h>
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2009-12-12 07:24:02 +08:00
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#include <unistd.h>
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#include <sys/types.h>
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2010-05-19 05:29:23 +08:00
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#include <sys/mman.h>
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2009-12-12 07:24:02 +08:00
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2011-03-06 08:40:06 +08:00
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#include "evlist.h"
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#include "evsel.h"
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2009-12-12 07:24:02 +08:00
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#include "session.h"
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2011-11-28 18:30:20 +08:00
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#include "tool.h"
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2009-12-15 00:22:59 +08:00
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#include "sort.h"
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2009-12-12 07:24:02 +08:00
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#include "util.h"
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2011-07-04 19:57:50 +08:00
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#include "cpumap.h"
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2012-06-28 00:08:42 +08:00
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#include "event-parse.h"
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2009-12-12 07:24:02 +08:00
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2012-08-02 05:53:11 +08:00
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int perf_session__parse_sample(struct perf_session *session,
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const union perf_event *event,
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struct perf_sample *sample)
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{
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struct perf_evsel *first;
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first = list_entry(session->evlist->entries.next, struct perf_evsel, node);
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2012-08-02 06:15:52 +08:00
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return perf_event__parse_sample(event, first->attr.sample_type,
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2012-08-02 05:53:11 +08:00
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first->sample_size,
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session->sample_id_all, sample,
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session->header.needs_swap);
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}
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2012-08-02 06:15:52 +08:00
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int perf_session__synthesize_sample(struct perf_session *session,
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union perf_event *event,
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const struct perf_sample *sample)
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{
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return perf_event__synthesize_sample(event, perf_evlist__sample_type(session->evlist),
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sample, session->header.needs_swap);
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}
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2009-12-12 07:24:02 +08:00
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static int perf_session__open(struct perf_session *self, bool force)
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{
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struct stat input_stat;
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2010-04-02 12:59:15 +08:00
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if (!strcmp(self->filename, "-")) {
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self->fd_pipe = true;
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self->fd = STDIN_FILENO;
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2011-03-10 22:15:54 +08:00
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if (perf_session__read_header(self, self->fd) < 0)
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2012-02-10 06:21:06 +08:00
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pr_err("incompatible file format (rerun with -v to learn more)");
|
2010-04-02 12:59:15 +08:00
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return 0;
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}
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|
2010-02-04 16:46:42 +08:00
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self->fd = open(self->filename, O_RDONLY);
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2009-12-12 07:24:02 +08:00
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if (self->fd < 0) {
|
2010-06-12 11:36:15 +08:00
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int err = errno;
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pr_err("failed to open %s: %s", self->filename, strerror(err));
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if (err == ENOENT && !strcmp(self->filename, "perf.data"))
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2009-12-12 07:24:02 +08:00
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pr_err(" (try 'perf record' first)");
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pr_err("\n");
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return -errno;
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}
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if (fstat(self->fd, &input_stat) < 0)
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goto out_close;
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if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) {
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pr_err("file %s not owned by current user or root\n",
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self->filename);
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goto out_close;
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}
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if (!input_stat.st_size) {
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pr_info("zero-sized file (%s), nothing to do!\n",
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self->filename);
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goto out_close;
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}
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2011-03-10 22:15:54 +08:00
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if (perf_session__read_header(self, self->fd) < 0) {
|
2012-02-10 06:21:06 +08:00
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pr_err("incompatible file format (rerun with -v to learn more)");
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2009-12-12 07:24:02 +08:00
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goto out_close;
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}
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2011-06-02 22:04:54 +08:00
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if (!perf_evlist__valid_sample_type(self->evlist)) {
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pr_err("non matching sample_type");
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goto out_close;
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}
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if (!perf_evlist__valid_sample_id_all(self->evlist)) {
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pr_err("non matching sample_id_all");
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goto out_close;
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}
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2009-12-12 07:24:02 +08:00
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self->size = input_stat.st_size;
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return 0;
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out_close:
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close(self->fd);
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self->fd = -1;
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return -1;
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}
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2010-12-02 20:25:28 +08:00
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void perf_session__update_sample_type(struct perf_session *self)
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{
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2011-03-10 22:15:54 +08:00
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self->sample_id_all = perf_evlist__sample_id_all(self->evlist);
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2011-11-12 08:28:50 +08:00
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self->id_hdr_size = perf_evlist__id_hdr_size(self->evlist);
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2011-11-28 17:56:39 +08:00
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self->host_machine.id_hdr_size = self->id_hdr_size;
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2012-07-21 07:25:49 +08:00
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machines__set_id_hdr_size(&self->machines, self->id_hdr_size);
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2010-12-02 20:25:28 +08:00
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}
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|
2010-04-19 13:32:50 +08:00
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int perf_session__create_kernel_maps(struct perf_session *self)
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{
|
2010-05-10 23:51:05 +08:00
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int ret = machine__create_kernel_maps(&self->host_machine);
|
2010-04-19 13:32:50 +08:00
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if (ret >= 0)
|
2010-05-10 23:51:05 +08:00
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ret = machines__create_guest_kernel_maps(&self->machines);
|
2010-04-19 13:32:50 +08:00
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return ret;
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|
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}
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|
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|
|
perf session: Free the ref_reloc_sym memory at the right place
Which is at perf_session__destroy_kernel_maps, counterpart to the
perf_session__create_kernel_maps where the kmap structure is located, just
after the vmlinux_maps.
Make it also check if the kernel maps were actually created, which may not
be the case if, for instance, perf_session__new can't complete due to
permission problems in, for instance, a 'perf report' case, when a
segfault will take place, that is how this was noticed.
The problem was introduced in d65a458, thus post .35.
This also adds code to release guest machines as them are also created
in perf_session__create_kernel_maps, so should be deleted on this newly
introduced counterpart, perf_session__destroy_kernel_maps.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-08-03 05:18:28 +08:00
|
|
|
static void perf_session__destroy_kernel_maps(struct perf_session *self)
|
|
|
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{
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|
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|
machine__destroy_kernel_maps(&self->host_machine);
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|
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|
machines__destroy_guest_kernel_maps(&self->machines);
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|
|
|
}
|
|
|
|
|
2010-12-10 11:09:16 +08:00
|
|
|
struct perf_session *perf_session__new(const char *filename, int mode,
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|
|
|
bool force, bool repipe,
|
2011-11-28 18:30:20 +08:00
|
|
|
struct perf_tool *tool)
|
2009-12-12 07:24:02 +08:00
|
|
|
{
|
2011-12-07 17:02:54 +08:00
|
|
|
struct perf_session *self;
|
|
|
|
struct stat st;
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
if (!filename || !strlen(filename)) {
|
|
|
|
if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
|
|
|
|
filename = "-";
|
|
|
|
else
|
|
|
|
filename = "perf.data";
|
|
|
|
}
|
|
|
|
|
|
|
|
len = strlen(filename);
|
|
|
|
self = zalloc(sizeof(*self) + len);
|
2009-12-12 07:24:02 +08:00
|
|
|
|
|
|
|
if (self == NULL)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
memcpy(self->filename, filename, len);
|
2010-12-01 01:49:46 +08:00
|
|
|
/*
|
|
|
|
* On 64bit we can mmap the data file in one go. No need for tiny mmap
|
|
|
|
* slices. On 32bit we use 32MB.
|
|
|
|
*/
|
|
|
|
#if BITS_PER_LONG == 64
|
|
|
|
self->mmap_window = ULLONG_MAX;
|
|
|
|
#else
|
|
|
|
self->mmap_window = 32 * 1024 * 1024ULL;
|
|
|
|
#endif
|
2010-04-28 08:17:50 +08:00
|
|
|
self->machines = RB_ROOT;
|
2010-05-01 14:41:20 +08:00
|
|
|
self->repipe = repipe;
|
2010-12-01 01:49:33 +08:00
|
|
|
INIT_LIST_HEAD(&self->ordered_samples.samples);
|
2010-12-01 01:49:53 +08:00
|
|
|
INIT_LIST_HEAD(&self->ordered_samples.sample_cache);
|
2010-12-01 01:49:55 +08:00
|
|
|
INIT_LIST_HEAD(&self->ordered_samples.to_free);
|
2010-05-10 06:57:08 +08:00
|
|
|
machine__init(&self->host_machine, "", HOST_KERNEL_ID);
|
2012-03-22 21:37:26 +08:00
|
|
|
hists__init(&self->hists);
|
2009-12-12 07:24:02 +08:00
|
|
|
|
2010-01-28 07:05:52 +08:00
|
|
|
if (mode == O_RDONLY) {
|
|
|
|
if (perf_session__open(self, force) < 0)
|
|
|
|
goto out_delete;
|
2011-03-10 22:15:54 +08:00
|
|
|
perf_session__update_sample_type(self);
|
2010-01-28 07:05:52 +08:00
|
|
|
} else if (mode == O_WRONLY) {
|
|
|
|
/*
|
|
|
|
* In O_RDONLY mode this will be performed when reading the
|
2011-01-30 00:01:45 +08:00
|
|
|
* kernel MMAP event, in perf_event__process_mmap().
|
2010-01-28 07:05:52 +08:00
|
|
|
*/
|
|
|
|
if (perf_session__create_kernel_maps(self) < 0)
|
|
|
|
goto out_delete;
|
|
|
|
}
|
2009-12-28 07:37:02 +08:00
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
if (tool && tool->ordering_requires_timestamps &&
|
|
|
|
tool->ordered_samples && !self->sample_id_all) {
|
2010-12-10 11:09:16 +08:00
|
|
|
dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
|
2011-11-28 18:30:20 +08:00
|
|
|
tool->ordered_samples = false;
|
2010-12-10 11:09:16 +08:00
|
|
|
}
|
|
|
|
|
2009-12-12 07:24:02 +08:00
|
|
|
out:
|
|
|
|
return self;
|
perf session: Move kmaps to perf_session
There is still some more work to do to disentangle map creation
from DSO loading, but this happens only for the kernel, and for
the early adopters of perf diff, where this disentanglement
matters most, we'll be testing different kernels, so no problem
here.
Further clarification: right now we create the kernel maps for
the various modules and discontiguous kernel text maps when
loading the DSO, we should do it as a two step process, first
creating the maps, for multiple mappings with the same DSO
store, then doing the dso load just once, for the first hit on
one of the maps sharing this DSO backing store.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260741029-4430-6-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-14 05:50:29 +08:00
|
|
|
out_delete:
|
|
|
|
perf_session__delete(self);
|
|
|
|
return NULL;
|
2009-12-12 07:24:02 +08:00
|
|
|
}
|
|
|
|
|
2011-11-09 23:24:25 +08:00
|
|
|
static void machine__delete_dead_threads(struct machine *machine)
|
2010-07-31 05:31:28 +08:00
|
|
|
{
|
|
|
|
struct thread *n, *t;
|
|
|
|
|
2011-11-09 23:24:25 +08:00
|
|
|
list_for_each_entry_safe(t, n, &machine->dead_threads, node) {
|
2010-07-31 05:31:28 +08:00
|
|
|
list_del(&t->node);
|
|
|
|
thread__delete(t);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-11-09 23:24:25 +08:00
|
|
|
static void perf_session__delete_dead_threads(struct perf_session *session)
|
|
|
|
{
|
|
|
|
machine__delete_dead_threads(&session->host_machine);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void machine__delete_threads(struct machine *self)
|
2010-07-31 05:31:28 +08:00
|
|
|
{
|
|
|
|
struct rb_node *nd = rb_first(&self->threads);
|
|
|
|
|
|
|
|
while (nd) {
|
|
|
|
struct thread *t = rb_entry(nd, struct thread, rb_node);
|
|
|
|
|
|
|
|
rb_erase(&t->rb_node, &self->threads);
|
|
|
|
nd = rb_next(nd);
|
|
|
|
thread__delete(t);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-11-09 23:24:25 +08:00
|
|
|
static void perf_session__delete_threads(struct perf_session *session)
|
|
|
|
{
|
|
|
|
machine__delete_threads(&session->host_machine);
|
|
|
|
}
|
|
|
|
|
2009-12-12 07:24:02 +08:00
|
|
|
void perf_session__delete(struct perf_session *self)
|
|
|
|
{
|
perf session: Free the ref_reloc_sym memory at the right place
Which is at perf_session__destroy_kernel_maps, counterpart to the
perf_session__create_kernel_maps where the kmap structure is located, just
after the vmlinux_maps.
Make it also check if the kernel maps were actually created, which may not
be the case if, for instance, perf_session__new can't complete due to
permission problems in, for instance, a 'perf report' case, when a
segfault will take place, that is how this was noticed.
The problem was introduced in d65a458, thus post .35.
This also adds code to release guest machines as them are also created
in perf_session__create_kernel_maps, so should be deleted on this newly
introduced counterpart, perf_session__destroy_kernel_maps.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-08-03 05:18:28 +08:00
|
|
|
perf_session__destroy_kernel_maps(self);
|
2010-07-31 05:31:28 +08:00
|
|
|
perf_session__delete_dead_threads(self);
|
|
|
|
perf_session__delete_threads(self);
|
|
|
|
machine__exit(&self->host_machine);
|
2009-12-12 07:24:02 +08:00
|
|
|
close(self->fd);
|
|
|
|
free(self);
|
|
|
|
}
|
2009-12-15 00:22:59 +08:00
|
|
|
|
2011-11-09 23:24:25 +08:00
|
|
|
void machine__remove_thread(struct machine *self, struct thread *th)
|
2010-06-17 19:37:44 +08:00
|
|
|
{
|
2010-08-03 05:59:28 +08:00
|
|
|
self->last_match = NULL;
|
2010-06-17 19:37:44 +08:00
|
|
|
rb_erase(&th->rb_node, &self->threads);
|
|
|
|
/*
|
|
|
|
* We may have references to this thread, for instance in some hist_entry
|
|
|
|
* instances, so just move them to a separate list.
|
|
|
|
*/
|
|
|
|
list_add_tail(&th->node, &self->dead_threads);
|
|
|
|
}
|
|
|
|
|
2009-12-15 00:22:59 +08:00
|
|
|
static bool symbol__match_parent_regex(struct symbol *sym)
|
|
|
|
{
|
|
|
|
if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-02-10 06:21:01 +08:00
|
|
|
static const u8 cpumodes[] = {
|
|
|
|
PERF_RECORD_MISC_USER,
|
|
|
|
PERF_RECORD_MISC_KERNEL,
|
|
|
|
PERF_RECORD_MISC_GUEST_USER,
|
|
|
|
PERF_RECORD_MISC_GUEST_KERNEL
|
|
|
|
};
|
|
|
|
#define NCPUMODES (sizeof(cpumodes)/sizeof(u8))
|
|
|
|
|
|
|
|
static void ip__resolve_ams(struct machine *self, struct thread *thread,
|
|
|
|
struct addr_map_symbol *ams,
|
|
|
|
u64 ip)
|
|
|
|
{
|
|
|
|
struct addr_location al;
|
|
|
|
size_t i;
|
|
|
|
u8 m;
|
|
|
|
|
|
|
|
memset(&al, 0, sizeof(al));
|
|
|
|
|
|
|
|
for (i = 0; i < NCPUMODES; i++) {
|
|
|
|
m = cpumodes[i];
|
|
|
|
/*
|
|
|
|
* We cannot use the header.misc hint to determine whether a
|
|
|
|
* branch stack address is user, kernel, guest, hypervisor.
|
|
|
|
* Branches may straddle the kernel/user/hypervisor boundaries.
|
|
|
|
* Thus, we have to try consecutively until we find a match
|
|
|
|
* or else, the symbol is unknown
|
|
|
|
*/
|
|
|
|
thread__find_addr_location(thread, self, m, MAP__FUNCTION,
|
|
|
|
ip, &al, NULL);
|
|
|
|
if (al.sym)
|
|
|
|
goto found;
|
|
|
|
}
|
|
|
|
found:
|
|
|
|
ams->addr = ip;
|
2012-03-09 06:47:48 +08:00
|
|
|
ams->al_addr = al.addr;
|
2012-02-10 06:21:01 +08:00
|
|
|
ams->sym = al.sym;
|
|
|
|
ams->map = al.map;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct branch_info *machine__resolve_bstack(struct machine *self,
|
|
|
|
struct thread *thr,
|
|
|
|
struct branch_stack *bs)
|
|
|
|
{
|
|
|
|
struct branch_info *bi;
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
bi = calloc(bs->nr, sizeof(struct branch_info));
|
|
|
|
if (!bi)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
for (i = 0; i < bs->nr; i++) {
|
|
|
|
ip__resolve_ams(self, thr, &bi[i].to, bs->entries[i].to);
|
|
|
|
ip__resolve_ams(self, thr, &bi[i].from, bs->entries[i].from);
|
|
|
|
bi[i].flags = bs->entries[i].flags;
|
|
|
|
}
|
|
|
|
return bi;
|
|
|
|
}
|
|
|
|
|
2012-05-31 13:43:26 +08:00
|
|
|
int machine__resolve_callchain(struct machine *self,
|
2011-11-28 17:56:39 +08:00
|
|
|
struct thread *thread,
|
|
|
|
struct ip_callchain *chain,
|
|
|
|
struct symbol **parent)
|
2009-12-15 00:22:59 +08:00
|
|
|
{
|
|
|
|
u8 cpumode = PERF_RECORD_MISC_USER;
|
|
|
|
unsigned int i;
|
2011-01-14 11:51:58 +08:00
|
|
|
int err;
|
2009-12-15 00:22:59 +08:00
|
|
|
|
2012-05-31 13:43:26 +08:00
|
|
|
callchain_cursor_reset(&callchain_cursor);
|
2009-12-15 00:22:59 +08:00
|
|
|
|
2012-05-31 13:43:27 +08:00
|
|
|
if (chain->nr > PERF_MAX_STACK_DEPTH) {
|
|
|
|
pr_warning("corrupted callchain. skipping...\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-12-15 00:22:59 +08:00
|
|
|
for (i = 0; i < chain->nr; i++) {
|
2011-06-07 23:49:46 +08:00
|
|
|
u64 ip;
|
2009-12-15 00:22:59 +08:00
|
|
|
struct addr_location al;
|
|
|
|
|
2011-06-07 23:49:46 +08:00
|
|
|
if (callchain_param.order == ORDER_CALLEE)
|
|
|
|
ip = chain->ips[i];
|
|
|
|
else
|
|
|
|
ip = chain->ips[chain->nr - i - 1];
|
|
|
|
|
2009-12-15 00:22:59 +08:00
|
|
|
if (ip >= PERF_CONTEXT_MAX) {
|
|
|
|
switch (ip) {
|
|
|
|
case PERF_CONTEXT_HV:
|
|
|
|
cpumode = PERF_RECORD_MISC_HYPERVISOR; break;
|
|
|
|
case PERF_CONTEXT_KERNEL:
|
|
|
|
cpumode = PERF_RECORD_MISC_KERNEL; break;
|
|
|
|
case PERF_CONTEXT_USER:
|
|
|
|
cpumode = PERF_RECORD_MISC_USER; break;
|
|
|
|
default:
|
2012-05-31 13:43:27 +08:00
|
|
|
pr_debug("invalid callchain context: "
|
|
|
|
"%"PRId64"\n", (s64) ip);
|
|
|
|
/*
|
|
|
|
* It seems the callchain is corrupted.
|
|
|
|
* Discard all.
|
|
|
|
*/
|
|
|
|
callchain_cursor_reset(&callchain_cursor);
|
|
|
|
return 0;
|
2009-12-15 00:22:59 +08:00
|
|
|
}
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2010-04-19 13:32:50 +08:00
|
|
|
al.filtered = false;
|
2009-12-15 00:22:59 +08:00
|
|
|
thread__find_addr_location(thread, self, cpumode,
|
2011-11-28 17:56:39 +08:00
|
|
|
MAP__FUNCTION, ip, &al, NULL);
|
2009-12-15 00:22:59 +08:00
|
|
|
if (al.sym != NULL) {
|
|
|
|
if (sort__has_parent && !*parent &&
|
|
|
|
symbol__match_parent_regex(al.sym))
|
|
|
|
*parent = al.sym;
|
2009-12-16 06:04:42 +08:00
|
|
|
if (!symbol_conf.use_callchain)
|
2009-12-15 00:22:59 +08:00
|
|
|
break;
|
|
|
|
}
|
2011-01-14 11:51:58 +08:00
|
|
|
|
2012-05-31 13:43:26 +08:00
|
|
|
err = callchain_cursor_append(&callchain_cursor,
|
2011-01-14 11:51:58 +08:00
|
|
|
ip, al.map, al.sym);
|
|
|
|
if (err)
|
|
|
|
return err;
|
2009-12-15 00:22:59 +08:00
|
|
|
}
|
|
|
|
|
2011-01-14 11:51:58 +08:00
|
|
|
return 0;
|
2009-12-15 00:22:59 +08:00
|
|
|
}
|
2009-12-28 07:36:59 +08:00
|
|
|
|
2011-11-25 18:19:45 +08:00
|
|
|
static int process_event_synth_tracing_data_stub(union perf_event *event __used,
|
|
|
|
struct perf_session *session __used)
|
|
|
|
{
|
|
|
|
dump_printf(": unhandled!\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-11-12 08:45:41 +08:00
|
|
|
static int process_event_synth_attr_stub(union perf_event *event __used,
|
|
|
|
struct perf_evlist **pevlist __used)
|
|
|
|
{
|
|
|
|
dump_printf(": unhandled!\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
static int process_event_sample_stub(struct perf_tool *tool __used,
|
2011-11-25 18:19:45 +08:00
|
|
|
union perf_event *event __used,
|
2011-03-16 02:44:01 +08:00
|
|
|
struct perf_sample *sample __used,
|
|
|
|
struct perf_evsel *evsel __used,
|
2011-11-28 17:56:39 +08:00
|
|
|
struct machine *machine __used)
|
2011-03-16 02:44:01 +08:00
|
|
|
{
|
|
|
|
dump_printf(": unhandled!\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
static int process_event_stub(struct perf_tool *tool __used,
|
2011-11-25 18:19:45 +08:00
|
|
|
union perf_event *event __used,
|
2011-01-29 23:02:00 +08:00
|
|
|
struct perf_sample *sample __used,
|
2011-11-28 17:56:39 +08:00
|
|
|
struct machine *machine __used)
|
2009-12-28 07:36:59 +08:00
|
|
|
{
|
|
|
|
dump_printf(": unhandled!\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
static int process_finished_round_stub(struct perf_tool *tool __used,
|
2011-11-25 18:19:45 +08:00
|
|
|
union perf_event *event __used,
|
2011-11-28 17:56:39 +08:00
|
|
|
struct perf_session *perf_session __used)
|
|
|
|
{
|
|
|
|
dump_printf(": unhandled!\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
static int process_event_type_stub(struct perf_tool *tool __used,
|
2011-11-28 17:56:39 +08:00
|
|
|
union perf_event *event __used)
|
2010-05-03 21:14:33 +08:00
|
|
|
{
|
|
|
|
dump_printf(": unhandled!\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
static int process_finished_round(struct perf_tool *tool,
|
2011-11-25 18:19:45 +08:00
|
|
|
union perf_event *event,
|
|
|
|
struct perf_session *session);
|
2010-05-03 21:14:33 +08:00
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
static void perf_tool__fill_defaults(struct perf_tool *tool)
|
2009-12-28 07:36:59 +08:00
|
|
|
{
|
2011-11-28 18:30:20 +08:00
|
|
|
if (tool->sample == NULL)
|
|
|
|
tool->sample = process_event_sample_stub;
|
|
|
|
if (tool->mmap == NULL)
|
|
|
|
tool->mmap = process_event_stub;
|
|
|
|
if (tool->comm == NULL)
|
|
|
|
tool->comm = process_event_stub;
|
|
|
|
if (tool->fork == NULL)
|
|
|
|
tool->fork = process_event_stub;
|
|
|
|
if (tool->exit == NULL)
|
|
|
|
tool->exit = process_event_stub;
|
|
|
|
if (tool->lost == NULL)
|
|
|
|
tool->lost = perf_event__process_lost;
|
|
|
|
if (tool->read == NULL)
|
|
|
|
tool->read = process_event_sample_stub;
|
|
|
|
if (tool->throttle == NULL)
|
|
|
|
tool->throttle = process_event_stub;
|
|
|
|
if (tool->unthrottle == NULL)
|
|
|
|
tool->unthrottle = process_event_stub;
|
|
|
|
if (tool->attr == NULL)
|
|
|
|
tool->attr = process_event_synth_attr_stub;
|
|
|
|
if (tool->event_type == NULL)
|
|
|
|
tool->event_type = process_event_type_stub;
|
|
|
|
if (tool->tracing_data == NULL)
|
|
|
|
tool->tracing_data = process_event_synth_tracing_data_stub;
|
|
|
|
if (tool->build_id == NULL)
|
|
|
|
tool->build_id = process_finished_round_stub;
|
|
|
|
if (tool->finished_round == NULL) {
|
|
|
|
if (tool->ordered_samples)
|
|
|
|
tool->finished_round = process_finished_round;
|
2010-05-03 21:14:33 +08:00
|
|
|
else
|
2011-11-28 18:30:20 +08:00
|
|
|
tool->finished_round = process_finished_round_stub;
|
2010-05-03 21:14:33 +08:00
|
|
|
}
|
2009-12-28 07:36:59 +08:00
|
|
|
}
|
2012-06-08 22:47:51 +08:00
|
|
|
|
|
|
|
void mem_bswap_32(void *src, int byte_size)
|
|
|
|
{
|
|
|
|
u32 *m = src;
|
|
|
|
while (byte_size > 0) {
|
|
|
|
*m = bswap_32(*m);
|
|
|
|
byte_size -= sizeof(u32);
|
|
|
|
++m;
|
|
|
|
}
|
|
|
|
}
|
2009-12-28 07:36:59 +08:00
|
|
|
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
void mem_bswap_64(void *src, int byte_size)
|
|
|
|
{
|
|
|
|
u64 *m = src;
|
|
|
|
|
|
|
|
while (byte_size > 0) {
|
|
|
|
*m = bswap_64(*m);
|
|
|
|
byte_size -= sizeof(u64);
|
|
|
|
++m;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
static void swap_sample_id_all(union perf_event *event, void *data)
|
|
|
|
{
|
|
|
|
void *end = (void *) event + event->header.size;
|
|
|
|
int size = end - data;
|
|
|
|
|
|
|
|
BUG_ON(size % sizeof(u64));
|
|
|
|
mem_bswap_64(data, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void perf_event__all64_swap(union perf_event *event,
|
|
|
|
bool sample_id_all __used)
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
{
|
2011-01-30 00:01:45 +08:00
|
|
|
struct perf_event_header *hdr = &event->header;
|
|
|
|
mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
{
|
2011-01-30 00:01:45 +08:00
|
|
|
event->comm.pid = bswap_32(event->comm.pid);
|
|
|
|
event->comm.tid = bswap_32(event->comm.tid);
|
2012-05-30 20:23:43 +08:00
|
|
|
|
|
|
|
if (sample_id_all) {
|
|
|
|
void *data = &event->comm.comm;
|
|
|
|
|
|
|
|
data += ALIGN(strlen(data) + 1, sizeof(u64));
|
|
|
|
swap_sample_id_all(event, data);
|
|
|
|
}
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
static void perf_event__mmap_swap(union perf_event *event,
|
|
|
|
bool sample_id_all)
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
{
|
2011-01-30 00:01:45 +08:00
|
|
|
event->mmap.pid = bswap_32(event->mmap.pid);
|
|
|
|
event->mmap.tid = bswap_32(event->mmap.tid);
|
|
|
|
event->mmap.start = bswap_64(event->mmap.start);
|
|
|
|
event->mmap.len = bswap_64(event->mmap.len);
|
|
|
|
event->mmap.pgoff = bswap_64(event->mmap.pgoff);
|
2012-05-30 20:23:43 +08:00
|
|
|
|
|
|
|
if (sample_id_all) {
|
|
|
|
void *data = &event->mmap.filename;
|
|
|
|
|
|
|
|
data += ALIGN(strlen(data) + 1, sizeof(u64));
|
|
|
|
swap_sample_id_all(event, data);
|
|
|
|
}
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
{
|
2011-01-30 00:01:45 +08:00
|
|
|
event->fork.pid = bswap_32(event->fork.pid);
|
|
|
|
event->fork.tid = bswap_32(event->fork.tid);
|
|
|
|
event->fork.ppid = bswap_32(event->fork.ppid);
|
|
|
|
event->fork.ptid = bswap_32(event->fork.ptid);
|
|
|
|
event->fork.time = bswap_64(event->fork.time);
|
2012-05-30 20:23:43 +08:00
|
|
|
|
|
|
|
if (sample_id_all)
|
|
|
|
swap_sample_id_all(event, &event->fork + 1);
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
{
|
2011-01-30 00:01:45 +08:00
|
|
|
event->read.pid = bswap_32(event->read.pid);
|
|
|
|
event->read.tid = bswap_32(event->read.tid);
|
|
|
|
event->read.value = bswap_64(event->read.value);
|
|
|
|
event->read.time_enabled = bswap_64(event->read.time_enabled);
|
|
|
|
event->read.time_running = bswap_64(event->read.time_running);
|
|
|
|
event->read.id = bswap_64(event->read.id);
|
2012-05-30 20:23:43 +08:00
|
|
|
|
|
|
|
if (sample_id_all)
|
|
|
|
swap_sample_id_all(event, &event->read + 1);
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
}
|
|
|
|
|
2012-05-16 14:59:03 +08:00
|
|
|
static u8 revbyte(u8 b)
|
|
|
|
{
|
|
|
|
int rev = (b >> 4) | ((b & 0xf) << 4);
|
|
|
|
rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
|
|
|
|
rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
|
|
|
|
return (u8) rev;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX this is hack in attempt to carry flags bitfield
|
|
|
|
* throught endian village. ABI says:
|
|
|
|
*
|
|
|
|
* Bit-fields are allocated from right to left (least to most significant)
|
|
|
|
* on little-endian implementations and from left to right (most to least
|
|
|
|
* significant) on big-endian implementations.
|
|
|
|
*
|
|
|
|
* The above seems to be byte specific, so we need to reverse each
|
|
|
|
* byte of the bitfield. 'Internet' also says this might be implementation
|
|
|
|
* specific and we probably need proper fix and carry perf_event_attr
|
|
|
|
* bitfield flags in separate data file FEAT_ section. Thought this seems
|
|
|
|
* to work for now.
|
|
|
|
*/
|
|
|
|
static void swap_bitfield(u8 *p, unsigned len)
|
|
|
|
{
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
for (i = 0; i < len; i++) {
|
|
|
|
*p = revbyte(*p);
|
|
|
|
p++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-07-16 02:34:09 +08:00
|
|
|
/* exported for swapping attributes in file header */
|
|
|
|
void perf_event__attr_swap(struct perf_event_attr *attr)
|
|
|
|
{
|
|
|
|
attr->type = bswap_32(attr->type);
|
|
|
|
attr->size = bswap_32(attr->size);
|
|
|
|
attr->config = bswap_64(attr->config);
|
|
|
|
attr->sample_period = bswap_64(attr->sample_period);
|
|
|
|
attr->sample_type = bswap_64(attr->sample_type);
|
|
|
|
attr->read_format = bswap_64(attr->read_format);
|
|
|
|
attr->wakeup_events = bswap_32(attr->wakeup_events);
|
|
|
|
attr->bp_type = bswap_32(attr->bp_type);
|
|
|
|
attr->bp_addr = bswap_64(attr->bp_addr);
|
|
|
|
attr->bp_len = bswap_64(attr->bp_len);
|
2012-05-16 14:59:03 +08:00
|
|
|
|
|
|
|
swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64));
|
2011-07-16 02:34:09 +08:00
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
static void perf_event__hdr_attr_swap(union perf_event *event,
|
|
|
|
bool sample_id_all __used)
|
2010-04-02 12:59:19 +08:00
|
|
|
{
|
|
|
|
size_t size;
|
|
|
|
|
2011-07-16 02:34:09 +08:00
|
|
|
perf_event__attr_swap(&event->attr.attr);
|
2010-04-02 12:59:19 +08:00
|
|
|
|
2011-01-30 00:01:45 +08:00
|
|
|
size = event->header.size;
|
|
|
|
size -= (void *)&event->attr.id - (void *)event;
|
|
|
|
mem_bswap_64(event->attr.id, size);
|
2010-04-02 12:59:19 +08:00
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
static void perf_event__event_type_swap(union perf_event *event,
|
|
|
|
bool sample_id_all __used)
|
2010-04-02 12:59:20 +08:00
|
|
|
{
|
2011-01-30 00:01:45 +08:00
|
|
|
event->event_type.event_type.event_id =
|
|
|
|
bswap_64(event->event_type.event_type.event_id);
|
2010-04-02 12:59:20 +08:00
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
static void perf_event__tracing_data_swap(union perf_event *event,
|
|
|
|
bool sample_id_all __used)
|
2010-04-02 12:59:21 +08:00
|
|
|
{
|
2011-01-30 00:01:45 +08:00
|
|
|
event->tracing_data.size = bswap_32(event->tracing_data.size);
|
2010-04-02 12:59:21 +08:00
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
typedef void (*perf_event__swap_op)(union perf_event *event,
|
|
|
|
bool sample_id_all);
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
|
2011-01-30 00:01:45 +08:00
|
|
|
static perf_event__swap_op perf_event__swap_ops[] = {
|
|
|
|
[PERF_RECORD_MMAP] = perf_event__mmap_swap,
|
|
|
|
[PERF_RECORD_COMM] = perf_event__comm_swap,
|
|
|
|
[PERF_RECORD_FORK] = perf_event__task_swap,
|
|
|
|
[PERF_RECORD_EXIT] = perf_event__task_swap,
|
|
|
|
[PERF_RECORD_LOST] = perf_event__all64_swap,
|
|
|
|
[PERF_RECORD_READ] = perf_event__read_swap,
|
|
|
|
[PERF_RECORD_SAMPLE] = perf_event__all64_swap,
|
2011-07-16 02:34:09 +08:00
|
|
|
[PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
|
2011-01-30 00:01:45 +08:00
|
|
|
[PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
|
|
|
|
[PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
|
|
|
|
[PERF_RECORD_HEADER_BUILD_ID] = NULL,
|
|
|
|
[PERF_RECORD_HEADER_MAX] = NULL,
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
};
|
|
|
|
|
2010-04-24 06:04:12 +08:00
|
|
|
struct sample_queue {
|
|
|
|
u64 timestamp;
|
2010-12-07 20:48:50 +08:00
|
|
|
u64 file_offset;
|
2011-01-30 00:01:45 +08:00
|
|
|
union perf_event *event;
|
2010-04-24 06:04:12 +08:00
|
|
|
struct list_head list;
|
|
|
|
};
|
|
|
|
|
2010-12-01 01:49:53 +08:00
|
|
|
static void perf_session_free_sample_buffers(struct perf_session *session)
|
|
|
|
{
|
|
|
|
struct ordered_samples *os = &session->ordered_samples;
|
|
|
|
|
2010-12-01 01:49:55 +08:00
|
|
|
while (!list_empty(&os->to_free)) {
|
2010-12-01 01:49:53 +08:00
|
|
|
struct sample_queue *sq;
|
|
|
|
|
2010-12-01 01:49:55 +08:00
|
|
|
sq = list_entry(os->to_free.next, struct sample_queue, list);
|
2010-12-01 01:49:53 +08:00
|
|
|
list_del(&sq->list);
|
|
|
|
free(sq);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-12-05 21:32:55 +08:00
|
|
|
static int perf_session_deliver_event(struct perf_session *session,
|
2011-01-30 00:01:45 +08:00
|
|
|
union perf_event *event,
|
2011-01-29 23:02:00 +08:00
|
|
|
struct perf_sample *sample,
|
2011-11-28 18:30:20 +08:00
|
|
|
struct perf_tool *tool,
|
2010-12-07 20:48:53 +08:00
|
|
|
u64 file_offset);
|
2010-12-05 21:32:55 +08:00
|
|
|
|
2010-04-24 06:04:12 +08:00
|
|
|
static void flush_sample_queue(struct perf_session *s,
|
2011-11-28 18:30:20 +08:00
|
|
|
struct perf_tool *tool)
|
2010-04-24 06:04:12 +08:00
|
|
|
{
|
2010-12-01 01:49:33 +08:00
|
|
|
struct ordered_samples *os = &s->ordered_samples;
|
|
|
|
struct list_head *head = &os->samples;
|
2010-04-24 06:04:12 +08:00
|
|
|
struct sample_queue *tmp, *iter;
|
2011-01-29 23:02:00 +08:00
|
|
|
struct perf_sample sample;
|
2010-12-01 01:49:33 +08:00
|
|
|
u64 limit = os->next_flush;
|
|
|
|
u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL;
|
2011-10-29 22:41:45 +08:00
|
|
|
unsigned idx = 0, progress_next = os->nr_samples / 16;
|
2011-05-22 08:17:22 +08:00
|
|
|
int ret;
|
2010-04-24 06:04:12 +08:00
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
if (!tool->ordered_samples || !limit)
|
2010-04-24 06:04:12 +08:00
|
|
|
return;
|
|
|
|
|
|
|
|
list_for_each_entry_safe(iter, tmp, head, list) {
|
|
|
|
if (iter->timestamp > limit)
|
2010-12-01 01:49:33 +08:00
|
|
|
break;
|
2010-04-24 06:04:12 +08:00
|
|
|
|
2011-05-22 08:17:22 +08:00
|
|
|
ret = perf_session__parse_sample(s, iter->event, &sample);
|
|
|
|
if (ret)
|
|
|
|
pr_err("Can't parse sample, err = %d\n", ret);
|
|
|
|
else
|
2011-11-28 18:30:20 +08:00
|
|
|
perf_session_deliver_event(s, iter->event, &sample, tool,
|
2011-05-22 08:17:22 +08:00
|
|
|
iter->file_offset);
|
2010-04-24 06:04:12 +08:00
|
|
|
|
2010-12-01 01:49:33 +08:00
|
|
|
os->last_flush = iter->timestamp;
|
2010-04-24 06:04:12 +08:00
|
|
|
list_del(&iter->list);
|
2010-12-01 01:49:53 +08:00
|
|
|
list_add(&iter->list, &os->sample_cache);
|
2011-10-29 22:41:45 +08:00
|
|
|
if (++idx >= progress_next) {
|
|
|
|
progress_next += os->nr_samples / 16;
|
|
|
|
ui_progress__update(idx, os->nr_samples,
|
|
|
|
"Processing time ordered events...");
|
|
|
|
}
|
2010-04-24 06:04:12 +08:00
|
|
|
}
|
2010-12-01 01:49:33 +08:00
|
|
|
|
|
|
|
if (list_empty(head)) {
|
|
|
|
os->last_sample = NULL;
|
|
|
|
} else if (last_ts <= limit) {
|
|
|
|
os->last_sample =
|
|
|
|
list_entry(head->prev, struct sample_queue, list);
|
|
|
|
}
|
2011-10-29 22:41:45 +08:00
|
|
|
|
|
|
|
os->nr_samples = 0;
|
2010-04-24 06:04:12 +08:00
|
|
|
}
|
|
|
|
|
2010-05-03 21:14:33 +08:00
|
|
|
/*
|
|
|
|
* When perf record finishes a pass on every buffers, it records this pseudo
|
|
|
|
* event.
|
|
|
|
* We record the max timestamp t found in the pass n.
|
|
|
|
* Assuming these timestamps are monotonic across cpus, we know that if
|
|
|
|
* a buffer still has events with timestamps below t, they will be all
|
|
|
|
* available and then read in the pass n + 1.
|
|
|
|
* Hence when we start to read the pass n + 2, we can safely flush every
|
|
|
|
* events with timestamps below t.
|
|
|
|
*
|
|
|
|
* ============ PASS n =================
|
|
|
|
* CPU 0 | CPU 1
|
|
|
|
* |
|
|
|
|
* cnt1 timestamps | cnt2 timestamps
|
|
|
|
* 1 | 2
|
|
|
|
* 2 | 3
|
|
|
|
* - | 4 <--- max recorded
|
|
|
|
*
|
|
|
|
* ============ PASS n + 1 ==============
|
|
|
|
* CPU 0 | CPU 1
|
|
|
|
* |
|
|
|
|
* cnt1 timestamps | cnt2 timestamps
|
|
|
|
* 3 | 5
|
|
|
|
* 4 | 6
|
|
|
|
* 5 | 7 <---- max recorded
|
|
|
|
*
|
|
|
|
* Flush every events below timestamp 4
|
|
|
|
*
|
|
|
|
* ============ PASS n + 2 ==============
|
|
|
|
* CPU 0 | CPU 1
|
|
|
|
* |
|
|
|
|
* cnt1 timestamps | cnt2 timestamps
|
|
|
|
* 6 | 8
|
|
|
|
* 7 | 9
|
|
|
|
* - | 10
|
|
|
|
*
|
|
|
|
* Flush every events below timestamp 7
|
|
|
|
* etc...
|
|
|
|
*/
|
2011-11-28 18:30:20 +08:00
|
|
|
static int process_finished_round(struct perf_tool *tool,
|
2011-11-25 18:19:45 +08:00
|
|
|
union perf_event *event __used,
|
|
|
|
struct perf_session *session)
|
2010-05-03 21:14:33 +08:00
|
|
|
{
|
2011-11-28 18:30:20 +08:00
|
|
|
flush_sample_queue(session, tool);
|
2010-05-03 21:14:33 +08:00
|
|
|
session->ordered_samples.next_flush = session->ordered_samples.max_timestamp;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-04-24 06:04:12 +08:00
|
|
|
/* The queue is ordered by time */
|
2010-12-05 21:32:55 +08:00
|
|
|
static void __queue_event(struct sample_queue *new, struct perf_session *s)
|
2010-04-24 06:04:12 +08:00
|
|
|
{
|
2010-12-01 01:49:33 +08:00
|
|
|
struct ordered_samples *os = &s->ordered_samples;
|
|
|
|
struct sample_queue *sample = os->last_sample;
|
|
|
|
u64 timestamp = new->timestamp;
|
|
|
|
struct list_head *p;
|
2010-04-24 06:04:12 +08:00
|
|
|
|
2011-10-29 22:41:45 +08:00
|
|
|
++os->nr_samples;
|
2010-12-01 01:49:33 +08:00
|
|
|
os->last_sample = new;
|
2010-04-24 06:04:12 +08:00
|
|
|
|
2010-12-01 01:49:33 +08:00
|
|
|
if (!sample) {
|
|
|
|
list_add(&new->list, &os->samples);
|
|
|
|
os->max_timestamp = timestamp;
|
2010-04-24 06:04:12 +08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2010-12-01 01:49:33 +08:00
|
|
|
* last_sample might point to some random place in the list as it's
|
|
|
|
* the last queued event. We expect that the new event is close to
|
|
|
|
* this.
|
2010-04-24 06:04:12 +08:00
|
|
|
*/
|
2010-12-01 01:49:33 +08:00
|
|
|
if (sample->timestamp <= timestamp) {
|
|
|
|
while (sample->timestamp <= timestamp) {
|
|
|
|
p = sample->list.next;
|
|
|
|
if (p == &os->samples) {
|
|
|
|
list_add_tail(&new->list, &os->samples);
|
|
|
|
os->max_timestamp = timestamp;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
sample = list_entry(p, struct sample_queue, list);
|
|
|
|
}
|
|
|
|
list_add_tail(&new->list, &sample->list);
|
|
|
|
} else {
|
|
|
|
while (sample->timestamp > timestamp) {
|
|
|
|
p = sample->list.prev;
|
|
|
|
if (p == &os->samples) {
|
|
|
|
list_add(&new->list, &os->samples);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
sample = list_entry(p, struct sample_queue, list);
|
|
|
|
}
|
|
|
|
list_add(&new->list, &sample->list);
|
|
|
|
}
|
2010-04-24 06:04:12 +08:00
|
|
|
}
|
|
|
|
|
2010-12-01 01:49:55 +08:00
|
|
|
#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue))
|
|
|
|
|
2011-01-30 00:01:45 +08:00
|
|
|
static int perf_session_queue_event(struct perf_session *s, union perf_event *event,
|
2011-01-29 23:02:00 +08:00
|
|
|
struct perf_sample *sample, u64 file_offset)
|
2010-04-24 06:04:12 +08:00
|
|
|
{
|
2010-12-01 01:49:55 +08:00
|
|
|
struct ordered_samples *os = &s->ordered_samples;
|
|
|
|
struct list_head *sc = &os->sample_cache;
|
2011-01-29 23:02:00 +08:00
|
|
|
u64 timestamp = sample->time;
|
2010-04-24 06:04:12 +08:00
|
|
|
struct sample_queue *new;
|
|
|
|
|
2010-12-07 20:48:44 +08:00
|
|
|
if (!timestamp || timestamp == ~0ULL)
|
2010-12-05 21:32:55 +08:00
|
|
|
return -ETIME;
|
|
|
|
|
2010-04-24 06:04:12 +08:00
|
|
|
if (timestamp < s->ordered_samples.last_flush) {
|
|
|
|
printf("Warning: Timestamp below last timeslice flush\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2010-12-01 01:49:53 +08:00
|
|
|
if (!list_empty(sc)) {
|
|
|
|
new = list_entry(sc->next, struct sample_queue, list);
|
|
|
|
list_del(&new->list);
|
2010-12-01 01:49:55 +08:00
|
|
|
} else if (os->sample_buffer) {
|
|
|
|
new = os->sample_buffer + os->sample_buffer_idx;
|
|
|
|
if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER)
|
|
|
|
os->sample_buffer = NULL;
|
2010-12-01 01:49:53 +08:00
|
|
|
} else {
|
2010-12-01 01:49:55 +08:00
|
|
|
os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new));
|
|
|
|
if (!os->sample_buffer)
|
2010-12-01 01:49:53 +08:00
|
|
|
return -ENOMEM;
|
2010-12-01 01:49:55 +08:00
|
|
|
list_add(&os->sample_buffer->list, &os->to_free);
|
|
|
|
os->sample_buffer_idx = 2;
|
|
|
|
new = os->sample_buffer + 1;
|
2010-12-01 01:49:53 +08:00
|
|
|
}
|
2010-04-24 06:04:12 +08:00
|
|
|
|
|
|
|
new->timestamp = timestamp;
|
2010-12-07 20:48:50 +08:00
|
|
|
new->file_offset = file_offset;
|
2010-12-01 01:49:49 +08:00
|
|
|
new->event = event;
|
2010-04-24 06:04:12 +08:00
|
|
|
|
2010-12-05 21:32:55 +08:00
|
|
|
__queue_event(new, s);
|
perf session: Parse sample earlier
At perf_session__process_event, so that we reduce the number of lines in eache
tool sample processing routine that now receives a sample_data pointer already
parsed.
This will also be useful in the next patch, where we'll allow sample the
identity fields in MMAP, FORK, EXIT, etc, when it will be possible to see (cpu,
timestamp) just after before every event.
Also validate callchains in perf_session__process_event, i.e. as early as
possible, and keep a counter of the number of events discarded due to invalid
callchains, warning the user about it if it happens.
There is an assumption that was kept that all events have the same sample_type,
that will be dealt with in the future, when this preexisting limitation will be
removed.
Tested-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <1291318772-30880-4-git-send-email-acme@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-03 00:10:21 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2010-04-24 06:04:12 +08:00
|
|
|
|
2011-01-29 23:02:00 +08:00
|
|
|
static void callchain__printf(struct perf_sample *sample)
|
perf session: Parse sample earlier
At perf_session__process_event, so that we reduce the number of lines in eache
tool sample processing routine that now receives a sample_data pointer already
parsed.
This will also be useful in the next patch, where we'll allow sample the
identity fields in MMAP, FORK, EXIT, etc, when it will be possible to see (cpu,
timestamp) just after before every event.
Also validate callchains in perf_session__process_event, i.e. as early as
possible, and keep a counter of the number of events discarded due to invalid
callchains, warning the user about it if it happens.
There is an assumption that was kept that all events have the same sample_type,
that will be dealt with in the future, when this preexisting limitation will be
removed.
Tested-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <1291318772-30880-4-git-send-email-acme@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-03 00:10:21 +08:00
|
|
|
{
|
|
|
|
unsigned int i;
|
2010-04-24 06:04:12 +08:00
|
|
|
|
2011-01-23 06:37:02 +08:00
|
|
|
printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr);
|
perf session: Parse sample earlier
At perf_session__process_event, so that we reduce the number of lines in eache
tool sample processing routine that now receives a sample_data pointer already
parsed.
This will also be useful in the next patch, where we'll allow sample the
identity fields in MMAP, FORK, EXIT, etc, when it will be possible to see (cpu,
timestamp) just after before every event.
Also validate callchains in perf_session__process_event, i.e. as early as
possible, and keep a counter of the number of events discarded due to invalid
callchains, warning the user about it if it happens.
There is an assumption that was kept that all events have the same sample_type,
that will be dealt with in the future, when this preexisting limitation will be
removed.
Tested-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <1291318772-30880-4-git-send-email-acme@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-03 00:10:21 +08:00
|
|
|
|
|
|
|
for (i = 0; i < sample->callchain->nr; i++)
|
2011-01-23 06:37:02 +08:00
|
|
|
printf("..... %2d: %016" PRIx64 "\n",
|
|
|
|
i, sample->callchain->ips[i]);
|
2010-04-24 06:04:12 +08:00
|
|
|
}
|
|
|
|
|
2012-02-10 06:21:01 +08:00
|
|
|
static void branch_stack__printf(struct perf_sample *sample)
|
|
|
|
{
|
|
|
|
uint64_t i;
|
|
|
|
|
|
|
|
printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
|
|
|
|
|
|
|
|
for (i = 0; i < sample->branch_stack->nr; i++)
|
|
|
|
printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n",
|
|
|
|
i, sample->branch_stack->entries[i].from,
|
|
|
|
sample->branch_stack->entries[i].to);
|
|
|
|
}
|
|
|
|
|
2010-12-02 20:25:28 +08:00
|
|
|
static void perf_session__print_tstamp(struct perf_session *session,
|
2011-01-30 00:01:45 +08:00
|
|
|
union perf_event *event,
|
2011-01-29 23:02:00 +08:00
|
|
|
struct perf_sample *sample)
|
2010-12-02 20:25:28 +08:00
|
|
|
{
|
2012-08-02 06:15:52 +08:00
|
|
|
u64 sample_type = perf_evlist__sample_type(session->evlist);
|
|
|
|
|
2010-12-02 20:25:28 +08:00
|
|
|
if (event->header.type != PERF_RECORD_SAMPLE &&
|
|
|
|
!session->sample_id_all) {
|
|
|
|
fputs("-1 -1 ", stdout);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2012-08-02 06:15:52 +08:00
|
|
|
if ((sample_type & PERF_SAMPLE_CPU))
|
2010-12-02 20:25:28 +08:00
|
|
|
printf("%u ", sample->cpu);
|
|
|
|
|
2012-08-02 06:15:52 +08:00
|
|
|
if (sample_type & PERF_SAMPLE_TIME)
|
2011-01-23 06:37:02 +08:00
|
|
|
printf("%" PRIu64 " ", sample->time);
|
2010-12-02 20:25:28 +08:00
|
|
|
}
|
|
|
|
|
2011-01-30 00:01:45 +08:00
|
|
|
static void dump_event(struct perf_session *session, union perf_event *event,
|
2011-01-29 23:02:00 +08:00
|
|
|
u64 file_offset, struct perf_sample *sample)
|
2010-12-07 20:48:47 +08:00
|
|
|
{
|
|
|
|
if (!dump_trace)
|
|
|
|
return;
|
|
|
|
|
2011-01-23 06:37:02 +08:00
|
|
|
printf("\n%#" PRIx64 " [%#x]: event: %d\n",
|
|
|
|
file_offset, event->header.size, event->header.type);
|
2010-12-07 20:48:47 +08:00
|
|
|
|
|
|
|
trace_event(event);
|
|
|
|
|
|
|
|
if (sample)
|
|
|
|
perf_session__print_tstamp(session, event, sample);
|
|
|
|
|
2011-01-23 06:37:02 +08:00
|
|
|
printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
|
2011-01-30 00:01:45 +08:00
|
|
|
event->header.size, perf_event__name(event->header.type));
|
2010-12-07 20:48:47 +08:00
|
|
|
}
|
|
|
|
|
2011-01-30 00:01:45 +08:00
|
|
|
static void dump_sample(struct perf_session *session, union perf_event *event,
|
2011-01-29 23:02:00 +08:00
|
|
|
struct perf_sample *sample)
|
2010-12-07 20:48:47 +08:00
|
|
|
{
|
2012-08-02 06:15:52 +08:00
|
|
|
u64 sample_type;
|
|
|
|
|
2010-12-09 22:20:20 +08:00
|
|
|
if (!dump_trace)
|
|
|
|
return;
|
|
|
|
|
2011-05-31 03:08:23 +08:00
|
|
|
printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
|
2011-01-23 06:37:02 +08:00
|
|
|
event->header.misc, sample->pid, sample->tid, sample->ip,
|
2011-05-31 03:08:23 +08:00
|
|
|
sample->period, sample->addr);
|
2010-12-07 20:48:47 +08:00
|
|
|
|
2012-08-02 06:15:52 +08:00
|
|
|
sample_type = perf_evlist__sample_type(session->evlist);
|
|
|
|
|
|
|
|
if (sample_type & PERF_SAMPLE_CALLCHAIN)
|
2010-12-09 22:20:20 +08:00
|
|
|
callchain__printf(sample);
|
2012-02-10 06:21:01 +08:00
|
|
|
|
2012-08-02 06:15:52 +08:00
|
|
|
if (sample_type & PERF_SAMPLE_BRANCH_STACK)
|
2012-02-10 06:21:01 +08:00
|
|
|
branch_stack__printf(sample);
|
2010-12-07 20:48:47 +08:00
|
|
|
}
|
|
|
|
|
2011-11-28 17:56:39 +08:00
|
|
|
static struct machine *
|
|
|
|
perf_session__find_machine_for_cpumode(struct perf_session *session,
|
|
|
|
union perf_event *event)
|
|
|
|
{
|
|
|
|
const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
|
|
|
|
|
2012-07-21 07:25:48 +08:00
|
|
|
if (perf_guest &&
|
|
|
|
((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
|
|
|
|
(cpumode == PERF_RECORD_MISC_GUEST_USER))) {
|
2012-04-09 16:22:23 +08:00
|
|
|
u32 pid;
|
|
|
|
|
|
|
|
if (event->header.type == PERF_RECORD_MMAP)
|
|
|
|
pid = event->mmap.pid;
|
|
|
|
else
|
|
|
|
pid = event->ip.pid;
|
|
|
|
|
perf kvm: Fix regression with guest machine creation
Commit 743eb868657bdb1b26c7b24077ca21c67c82c777 reworked when the
machines were created. Prior to this commit guest machines could be
created in perf_event__process_kernel_mmap() while processing kernel
MMAP events. This commit assumes that the machines exist by the time
perf_session_deliver_event is called (e.g., during processing of build
id events) - which is not always correct.
One example is the use of default guest args (--guestkallsyms and
--guestmodules) for short times where no samples hit within a guest
module. For this case no build id is added to the file header. No build
id == no machine created. That leads to the next example -- the use of
no-buildid (-B) on the record for all perf-kvm invocations. In both
cases perf report dies with a SEGFAULT of the form:
(gdb) bt
0 0x000000000046dd7b in machine__mmap_name (self=0x0, bf=0x7fffffffbd20 "q\021", size=4096) at util/map.c:715
1 0x0000000000444161 in perf_event__process_kernel_mmap (tool=0x7fffffffdd80, event=0x7ffff7fb4120, machine=0x0) at util/event.c:562
2 0x0000000000444642 in perf_event__process_mmap (tool=0x7fffffffdd80, event=0x7ffff7fb4120, sample=0x7fffffffd210, machine=0x0)
at util/event.c:668
3 0x0000000000470e0b in perf_session_deliver_event (session=0x915ca0, event=0x7ffff7fb4120, sample=0x7fffffffd210, tool=0x7fffffffdd80,
file_offset=8480) at util/session.c:979
4 0x000000000047032e in flush_sample_queue (s=0x915ca0, tool=0x7fffffffdd80) at util/session.c:679
5 0x0000000000471c8d in __perf_session__process_events (session=0x915ca0, data_offset=400, data_size=150448, file_size=150848, tool=
0x7fffffffdd80) at util/session.c:1363
6 0x0000000000471d42 in perf_session__process_events (self=0x915ca0, tool=0x7fffffffdd80) at util/session.c:1379
7 0x000000000042484a in __cmd_report (rep=0x7fffffffdd80) at builtin-report.c:368
8 0x0000000000425bf1 in cmd_report (argc=0, argv=0x915b00, prefix=0x0) at builtin-report.c:756
9 0x0000000000438505 in __cmd_report (argc=4, argv=0x7fffffffe260) at builtin-kvm.c:84
10 0x000000000043882a in cmd_kvm (argc=4, argv=0x7fffffffe260, prefix=0x0) at builtin-kvm.c:131
11 0x00000000004152cd in run_builtin (p=0x7a54e8, argc=9, argv=0x7fffffffe260) at perf.c:273
12 0x00000000004154c7 in handle_internal_command (argc=9, argv=0x7fffffffe260) at perf.c:345
13 0x0000000000415613 in run_argv (argcp=0x7fffffffe14c, argv=0x7fffffffe140) at perf.c:389
14 0x0000000000415899 in main (argc=9, argv=0x7fffffffe260) at perf.c:487
Fix by allowing the machine to be created in perf_session_deliver_event.
Tested with --guestmount option and default guest args, with and without
-B arg on record for both and for short (10 seconds) and long (10
minutes) windows.
Reported-by: Pradeep Kumar Surisetty <psuriset@linux.vnet.ibm.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Pradeep Kumar Surisetty <psuriset@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1341180697-64515-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-07-02 06:11:37 +08:00
|
|
|
return perf_session__findnew_machine(session, pid);
|
2012-04-09 16:22:23 +08:00
|
|
|
}
|
2011-11-28 17:56:39 +08:00
|
|
|
|
|
|
|
return perf_session__find_host_machine(session);
|
|
|
|
}
|
|
|
|
|
2010-12-05 21:32:55 +08:00
|
|
|
static int perf_session_deliver_event(struct perf_session *session,
|
2011-01-30 00:01:45 +08:00
|
|
|
union perf_event *event,
|
2011-01-29 23:02:00 +08:00
|
|
|
struct perf_sample *sample,
|
2011-11-28 18:30:20 +08:00
|
|
|
struct perf_tool *tool,
|
2010-12-07 20:48:55 +08:00
|
|
|
u64 file_offset)
|
2010-12-05 21:32:55 +08:00
|
|
|
{
|
2011-03-16 02:44:01 +08:00
|
|
|
struct perf_evsel *evsel;
|
2011-11-28 17:56:39 +08:00
|
|
|
struct machine *machine;
|
2011-03-16 02:44:01 +08:00
|
|
|
|
2010-12-07 20:48:55 +08:00
|
|
|
dump_event(session, event, file_offset, sample);
|
|
|
|
|
2011-10-29 22:15:04 +08:00
|
|
|
evsel = perf_evlist__id2evsel(session->evlist, sample->id);
|
|
|
|
if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) {
|
|
|
|
/*
|
|
|
|
* XXX We're leaving PERF_RECORD_SAMPLE unnacounted here
|
|
|
|
* because the tools right now may apply filters, discarding
|
|
|
|
* some of the samples. For consistency, in the future we
|
|
|
|
* should have something like nr_filtered_samples and remove
|
|
|
|
* the sample->period from total_sample_period, etc, KISS for
|
|
|
|
* now tho.
|
|
|
|
*
|
|
|
|
* Also testing against NULL allows us to handle files without
|
|
|
|
* attr.sample_id_all and/or without PERF_SAMPLE_ID. In the
|
|
|
|
* future probably it'll be a good idea to restrict event
|
|
|
|
* processing via perf_session to files with both set.
|
|
|
|
*/
|
|
|
|
hists__inc_nr_events(&evsel->hists, event->header.type);
|
|
|
|
}
|
|
|
|
|
2011-11-28 17:56:39 +08:00
|
|
|
machine = perf_session__find_machine_for_cpumode(session, event);
|
|
|
|
|
2010-12-05 21:32:55 +08:00
|
|
|
switch (event->header.type) {
|
|
|
|
case PERF_RECORD_SAMPLE:
|
2010-12-07 20:48:55 +08:00
|
|
|
dump_sample(session, event, sample);
|
2011-03-16 02:44:01 +08:00
|
|
|
if (evsel == NULL) {
|
|
|
|
++session->hists.stats.nr_unknown_id;
|
2012-04-12 20:21:01 +08:00
|
|
|
return 0;
|
2011-03-16 02:44:01 +08:00
|
|
|
}
|
2012-02-11 01:05:04 +08:00
|
|
|
if (machine == NULL) {
|
|
|
|
++session->hists.stats.nr_unprocessable_samples;
|
2012-04-12 20:21:01 +08:00
|
|
|
return 0;
|
2012-02-11 01:05:04 +08:00
|
|
|
}
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->sample(tool, event, sample, evsel, machine);
|
2010-12-05 21:32:55 +08:00
|
|
|
case PERF_RECORD_MMAP:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->mmap(tool, event, sample, machine);
|
2010-12-05 21:32:55 +08:00
|
|
|
case PERF_RECORD_COMM:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->comm(tool, event, sample, machine);
|
2010-12-05 21:32:55 +08:00
|
|
|
case PERF_RECORD_FORK:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->fork(tool, event, sample, machine);
|
2010-12-05 21:32:55 +08:00
|
|
|
case PERF_RECORD_EXIT:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->exit(tool, event, sample, machine);
|
2010-12-05 21:32:55 +08:00
|
|
|
case PERF_RECORD_LOST:
|
2011-11-28 18:30:20 +08:00
|
|
|
if (tool->lost == perf_event__process_lost)
|
2011-11-28 17:56:39 +08:00
|
|
|
session->hists.stats.total_lost += event->lost.lost;
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->lost(tool, event, sample, machine);
|
2010-12-05 21:32:55 +08:00
|
|
|
case PERF_RECORD_READ:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->read(tool, event, sample, evsel, machine);
|
2010-12-05 21:32:55 +08:00
|
|
|
case PERF_RECORD_THROTTLE:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->throttle(tool, event, sample, machine);
|
2010-12-05 21:32:55 +08:00
|
|
|
case PERF_RECORD_UNTHROTTLE:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->unthrottle(tool, event, sample, machine);
|
2010-12-05 21:32:55 +08:00
|
|
|
default:
|
|
|
|
++session->hists.stats.nr_unknown_events;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-12-07 20:48:58 +08:00
|
|
|
static int perf_session__preprocess_sample(struct perf_session *session,
|
2011-01-30 00:01:45 +08:00
|
|
|
union perf_event *event, struct perf_sample *sample)
|
2010-12-07 20:48:58 +08:00
|
|
|
{
|
|
|
|
if (event->header.type != PERF_RECORD_SAMPLE ||
|
2012-08-02 06:15:52 +08:00
|
|
|
!(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_CALLCHAIN))
|
2010-12-07 20:48:58 +08:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (!ip_callchain__valid(sample->callchain, event)) {
|
|
|
|
pr_debug("call-chain problem with event, skipping it.\n");
|
|
|
|
++session->hists.stats.nr_invalid_chains;
|
|
|
|
session->hists.stats.total_invalid_chains += sample->period;
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-01-30 00:01:45 +08:00
|
|
|
static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
|
2011-11-28 18:30:20 +08:00
|
|
|
struct perf_tool *tool, u64 file_offset)
|
2009-12-28 07:36:59 +08:00
|
|
|
{
|
2011-11-12 08:45:41 +08:00
|
|
|
int err;
|
|
|
|
|
2010-12-07 20:49:01 +08:00
|
|
|
dump_event(session, event, file_offset, NULL);
|
2009-12-28 07:36:59 +08:00
|
|
|
|
2010-12-05 21:32:55 +08:00
|
|
|
/* These events are processed right away */
|
2009-12-28 07:36:59 +08:00
|
|
|
switch (event->header.type) {
|
2010-04-02 12:59:19 +08:00
|
|
|
case PERF_RECORD_HEADER_ATTR:
|
2011-11-28 18:30:20 +08:00
|
|
|
err = tool->attr(event, &session->evlist);
|
2011-11-12 08:45:41 +08:00
|
|
|
if (err == 0)
|
|
|
|
perf_session__update_sample_type(session);
|
|
|
|
return err;
|
2010-04-02 12:59:20 +08:00
|
|
|
case PERF_RECORD_HEADER_EVENT_TYPE:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->event_type(tool, event);
|
2010-04-02 12:59:21 +08:00
|
|
|
case PERF_RECORD_HEADER_TRACING_DATA:
|
|
|
|
/* setup for reading amidst mmap */
|
2010-12-05 21:32:55 +08:00
|
|
|
lseek(session->fd, file_offset, SEEK_SET);
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->tracing_data(event, session);
|
2010-04-02 12:59:22 +08:00
|
|
|
case PERF_RECORD_HEADER_BUILD_ID:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->build_id(tool, event, session);
|
2010-05-03 21:14:33 +08:00
|
|
|
case PERF_RECORD_FINISHED_ROUND:
|
2011-11-28 18:30:20 +08:00
|
|
|
return tool->finished_round(tool, event, session);
|
2009-12-28 07:36:59 +08:00
|
|
|
default:
|
2010-12-07 20:49:01 +08:00
|
|
|
return -EINVAL;
|
2009-12-28 07:36:59 +08:00
|
|
|
}
|
2010-12-07 20:49:01 +08:00
|
|
|
}
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
static void event_swap(union perf_event *event, bool sample_id_all)
|
|
|
|
{
|
|
|
|
perf_event__swap_op swap;
|
|
|
|
|
|
|
|
swap = perf_event__swap_ops[event->header.type];
|
|
|
|
if (swap)
|
|
|
|
swap(event, sample_id_all);
|
|
|
|
}
|
|
|
|
|
2010-12-07 20:49:01 +08:00
|
|
|
static int perf_session__process_event(struct perf_session *session,
|
2011-01-30 00:01:45 +08:00
|
|
|
union perf_event *event,
|
2011-11-28 18:30:20 +08:00
|
|
|
struct perf_tool *tool,
|
2010-12-07 20:49:01 +08:00
|
|
|
u64 file_offset)
|
|
|
|
{
|
2011-01-29 23:02:00 +08:00
|
|
|
struct perf_sample sample;
|
2010-12-07 20:49:01 +08:00
|
|
|
int ret;
|
|
|
|
|
2012-05-30 20:23:43 +08:00
|
|
|
if (session->header.needs_swap)
|
|
|
|
event_swap(event, session->sample_id_all);
|
2010-12-07 20:49:01 +08:00
|
|
|
|
|
|
|
if (event->header.type >= PERF_RECORD_HEADER_MAX)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
hists__inc_nr_events(&session->hists, event->header.type);
|
|
|
|
|
|
|
|
if (event->header.type >= PERF_RECORD_USER_TYPE_START)
|
2011-11-28 18:30:20 +08:00
|
|
|
return perf_session__process_user_event(session, event, tool, file_offset);
|
2010-12-05 21:32:55 +08:00
|
|
|
|
2010-12-07 20:48:58 +08:00
|
|
|
/*
|
|
|
|
* For all kernel events we get the sample data
|
|
|
|
*/
|
2011-05-22 08:17:22 +08:00
|
|
|
ret = perf_session__parse_sample(session, event, &sample);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
2010-12-07 20:48:58 +08:00
|
|
|
|
|
|
|
/* Preprocess sample records - precheck callchains */
|
|
|
|
if (perf_session__preprocess_sample(session, event, &sample))
|
|
|
|
return 0;
|
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
if (tool->ordered_samples) {
|
2010-12-07 20:48:50 +08:00
|
|
|
ret = perf_session_queue_event(session, event, &sample,
|
|
|
|
file_offset);
|
2010-12-05 21:32:55 +08:00
|
|
|
if (ret != -ETIME)
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
return perf_session_deliver_event(session, event, &sample, tool,
|
2010-12-07 20:48:53 +08:00
|
|
|
file_offset);
|
2009-12-28 07:36:59 +08:00
|
|
|
}
|
|
|
|
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
void perf_event_header__bswap(struct perf_event_header *self)
|
|
|
|
{
|
|
|
|
self->type = bswap_32(self->type);
|
|
|
|
self->misc = bswap_16(self->misc);
|
|
|
|
self->size = bswap_16(self->size);
|
|
|
|
}
|
|
|
|
|
2011-11-09 23:24:25 +08:00
|
|
|
struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
|
|
|
|
{
|
|
|
|
return machine__findnew_thread(&session->host_machine, pid);
|
|
|
|
}
|
|
|
|
|
2009-12-28 07:36:59 +08:00
|
|
|
static struct thread *perf_session__register_idle_thread(struct perf_session *self)
|
|
|
|
{
|
|
|
|
struct thread *thread = perf_session__findnew(self, 0);
|
|
|
|
|
|
|
|
if (thread == NULL || thread__set_comm(thread, "swapper")) {
|
|
|
|
pr_err("problem inserting idle task.\n");
|
|
|
|
thread = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return thread;
|
|
|
|
}
|
|
|
|
|
2011-01-05 02:25:15 +08:00
|
|
|
static void perf_session__warn_about_errors(const struct perf_session *session,
|
2011-11-28 18:30:20 +08:00
|
|
|
const struct perf_tool *tool)
|
2011-01-05 02:25:15 +08:00
|
|
|
{
|
2011-11-28 18:30:20 +08:00
|
|
|
if (tool->lost == perf_event__process_lost &&
|
2011-10-29 22:15:04 +08:00
|
|
|
session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) {
|
|
|
|
ui__warning("Processed %d events and lost %d chunks!\n\n"
|
|
|
|
"Check IO/CPU overload!\n\n",
|
|
|
|
session->hists.stats.nr_events[0],
|
|
|
|
session->hists.stats.nr_events[PERF_RECORD_LOST]);
|
2011-01-05 02:25:15 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if (session->hists.stats.nr_unknown_events != 0) {
|
|
|
|
ui__warning("Found %u unknown events!\n\n"
|
|
|
|
"Is this an older tool processing a perf.data "
|
|
|
|
"file generated by a more recent tool?\n\n"
|
|
|
|
"If that is not the case, consider "
|
|
|
|
"reporting to linux-kernel@vger.kernel.org.\n\n",
|
|
|
|
session->hists.stats.nr_unknown_events);
|
|
|
|
}
|
|
|
|
|
2011-03-16 02:44:01 +08:00
|
|
|
if (session->hists.stats.nr_unknown_id != 0) {
|
|
|
|
ui__warning("%u samples with id not present in the header\n",
|
|
|
|
session->hists.stats.nr_unknown_id);
|
|
|
|
}
|
|
|
|
|
2011-01-05 02:25:15 +08:00
|
|
|
if (session->hists.stats.nr_invalid_chains != 0) {
|
|
|
|
ui__warning("Found invalid callchains!\n\n"
|
|
|
|
"%u out of %u events were discarded for this reason.\n\n"
|
|
|
|
"Consider reporting to linux-kernel@vger.kernel.org.\n\n",
|
|
|
|
session->hists.stats.nr_invalid_chains,
|
|
|
|
session->hists.stats.nr_events[PERF_RECORD_SAMPLE]);
|
|
|
|
}
|
2012-02-11 01:05:04 +08:00
|
|
|
|
|
|
|
if (session->hists.stats.nr_unprocessable_samples != 0) {
|
|
|
|
ui__warning("%u unprocessable samples recorded.\n"
|
|
|
|
"Do you have a KVM guest running and not using 'perf kvm'?\n",
|
|
|
|
session->hists.stats.nr_unprocessable_samples);
|
|
|
|
}
|
2011-01-05 02:25:15 +08:00
|
|
|
}
|
|
|
|
|
2010-04-02 12:59:15 +08:00
|
|
|
#define session_done() (*(volatile int *)(&session_done))
|
|
|
|
volatile int session_done;
|
|
|
|
|
|
|
|
static int __perf_session__process_pipe_events(struct perf_session *self,
|
2011-11-28 18:30:20 +08:00
|
|
|
struct perf_tool *tool)
|
2010-04-02 12:59:15 +08:00
|
|
|
{
|
perf tools: Fix piped mode read code
In __perf_session__process_pipe_events(), there was a risk we would read
more than what a union perf_event struct can hold. this could happen in
case, perf is reading a file which contains new record types it does not
know about and which are larger than anything it knows about.
In general, perf is supposed to skip records it does not understand, but
in pipe mode, those have to be read and ignored. The fixed size header
contains the size of the record, but that size may be larger than union
perf_event, yet it was used as the backing to the read in:
union perf_event event;
void *p;
size = event->header.size;
p = &event;
p += sizeof(struct perf_event_header);
if (size - sizeof(struct perf_event_header)) {
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
We fix this by allocating a buffer based on the size reported in the
header. We reuse the buffer as much as we can. We realloc in case it
becomes too small. In the common case, the performance impact is
negligible.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-15 19:28:12 +08:00
|
|
|
union perf_event *event;
|
|
|
|
uint32_t size, cur_size = 0;
|
|
|
|
void *buf = NULL;
|
2010-04-02 12:59:15 +08:00
|
|
|
int skip = 0;
|
|
|
|
u64 head;
|
|
|
|
int err;
|
|
|
|
void *p;
|
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
perf_tool__fill_defaults(tool);
|
2010-04-02 12:59:15 +08:00
|
|
|
|
|
|
|
head = 0;
|
perf tools: Fix piped mode read code
In __perf_session__process_pipe_events(), there was a risk we would read
more than what a union perf_event struct can hold. this could happen in
case, perf is reading a file which contains new record types it does not
know about and which are larger than anything it knows about.
In general, perf is supposed to skip records it does not understand, but
in pipe mode, those have to be read and ignored. The fixed size header
contains the size of the record, but that size may be larger than union
perf_event, yet it was used as the backing to the read in:
union perf_event event;
void *p;
size = event->header.size;
p = &event;
p += sizeof(struct perf_event_header);
if (size - sizeof(struct perf_event_header)) {
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
We fix this by allocating a buffer based on the size reported in the
header. We reuse the buffer as much as we can. We realloc in case it
becomes too small. In the common case, the performance impact is
negligible.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-15 19:28:12 +08:00
|
|
|
cur_size = sizeof(union perf_event);
|
|
|
|
|
|
|
|
buf = malloc(cur_size);
|
|
|
|
if (!buf)
|
|
|
|
return -errno;
|
2010-04-02 12:59:15 +08:00
|
|
|
more:
|
perf tools: Fix piped mode read code
In __perf_session__process_pipe_events(), there was a risk we would read
more than what a union perf_event struct can hold. this could happen in
case, perf is reading a file which contains new record types it does not
know about and which are larger than anything it knows about.
In general, perf is supposed to skip records it does not understand, but
in pipe mode, those have to be read and ignored. The fixed size header
contains the size of the record, but that size may be larger than union
perf_event, yet it was used as the backing to the read in:
union perf_event event;
void *p;
size = event->header.size;
p = &event;
p += sizeof(struct perf_event_header);
if (size - sizeof(struct perf_event_header)) {
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
We fix this by allocating a buffer based on the size reported in the
header. We reuse the buffer as much as we can. We realloc in case it
becomes too small. In the common case, the performance impact is
negligible.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-15 19:28:12 +08:00
|
|
|
event = buf;
|
|
|
|
err = readn(self->fd, event, sizeof(struct perf_event_header));
|
2010-04-02 12:59:15 +08:00
|
|
|
if (err <= 0) {
|
|
|
|
if (err == 0)
|
|
|
|
goto done;
|
|
|
|
|
|
|
|
pr_err("failed to read event header\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (self->header.needs_swap)
|
perf tools: Fix piped mode read code
In __perf_session__process_pipe_events(), there was a risk we would read
more than what a union perf_event struct can hold. this could happen in
case, perf is reading a file which contains new record types it does not
know about and which are larger than anything it knows about.
In general, perf is supposed to skip records it does not understand, but
in pipe mode, those have to be read and ignored. The fixed size header
contains the size of the record, but that size may be larger than union
perf_event, yet it was used as the backing to the read in:
union perf_event event;
void *p;
size = event->header.size;
p = &event;
p += sizeof(struct perf_event_header);
if (size - sizeof(struct perf_event_header)) {
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
We fix this by allocating a buffer based on the size reported in the
header. We reuse the buffer as much as we can. We realloc in case it
becomes too small. In the common case, the performance impact is
negligible.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-15 19:28:12 +08:00
|
|
|
perf_event_header__bswap(&event->header);
|
2010-04-02 12:59:15 +08:00
|
|
|
|
perf tools: Fix piped mode read code
In __perf_session__process_pipe_events(), there was a risk we would read
more than what a union perf_event struct can hold. this could happen in
case, perf is reading a file which contains new record types it does not
know about and which are larger than anything it knows about.
In general, perf is supposed to skip records it does not understand, but
in pipe mode, those have to be read and ignored. The fixed size header
contains the size of the record, but that size may be larger than union
perf_event, yet it was used as the backing to the read in:
union perf_event event;
void *p;
size = event->header.size;
p = &event;
p += sizeof(struct perf_event_header);
if (size - sizeof(struct perf_event_header)) {
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
We fix this by allocating a buffer based on the size reported in the
header. We reuse the buffer as much as we can. We realloc in case it
becomes too small. In the common case, the performance impact is
negligible.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-15 19:28:12 +08:00
|
|
|
size = event->header.size;
|
2010-04-02 12:59:15 +08:00
|
|
|
if (size == 0)
|
|
|
|
size = 8;
|
|
|
|
|
perf tools: Fix piped mode read code
In __perf_session__process_pipe_events(), there was a risk we would read
more than what a union perf_event struct can hold. this could happen in
case, perf is reading a file which contains new record types it does not
know about and which are larger than anything it knows about.
In general, perf is supposed to skip records it does not understand, but
in pipe mode, those have to be read and ignored. The fixed size header
contains the size of the record, but that size may be larger than union
perf_event, yet it was used as the backing to the read in:
union perf_event event;
void *p;
size = event->header.size;
p = &event;
p += sizeof(struct perf_event_header);
if (size - sizeof(struct perf_event_header)) {
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
We fix this by allocating a buffer based on the size reported in the
header. We reuse the buffer as much as we can. We realloc in case it
becomes too small. In the common case, the performance impact is
negligible.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-15 19:28:12 +08:00
|
|
|
if (size > cur_size) {
|
|
|
|
void *new = realloc(buf, size);
|
|
|
|
if (!new) {
|
|
|
|
pr_err("failed to allocate memory to read event\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
|
|
|
buf = new;
|
|
|
|
cur_size = size;
|
|
|
|
event = buf;
|
|
|
|
}
|
|
|
|
p = event;
|
2010-04-02 12:59:15 +08:00
|
|
|
p += sizeof(struct perf_event_header);
|
|
|
|
|
2010-05-05 13:27:40 +08:00
|
|
|
if (size - sizeof(struct perf_event_header)) {
|
2011-01-04 02:50:55 +08:00
|
|
|
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
|
2010-05-05 13:27:40 +08:00
|
|
|
if (err <= 0) {
|
|
|
|
if (err == 0) {
|
|
|
|
pr_err("unexpected end of event stream\n");
|
|
|
|
goto done;
|
|
|
|
}
|
2010-04-02 12:59:15 +08:00
|
|
|
|
2010-05-05 13:27:40 +08:00
|
|
|
pr_err("failed to read event data\n");
|
|
|
|
goto out_err;
|
|
|
|
}
|
2010-04-02 12:59:15 +08:00
|
|
|
}
|
|
|
|
|
perf tools: Fix piped mode read code
In __perf_session__process_pipe_events(), there was a risk we would read
more than what a union perf_event struct can hold. this could happen in
case, perf is reading a file which contains new record types it does not
know about and which are larger than anything it knows about.
In general, perf is supposed to skip records it does not understand, but
in pipe mode, those have to be read and ignored. The fixed size header
contains the size of the record, but that size may be larger than union
perf_event, yet it was used as the backing to the read in:
union perf_event event;
void *p;
size = event->header.size;
p = &event;
p += sizeof(struct perf_event_header);
if (size - sizeof(struct perf_event_header)) {
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
We fix this by allocating a buffer based on the size reported in the
header. We reuse the buffer as much as we can. We realloc in case it
becomes too small. In the common case, the performance impact is
negligible.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-15 19:28:12 +08:00
|
|
|
if ((skip = perf_session__process_event(self, event, tool, head)) < 0) {
|
2012-04-17 02:42:51 +08:00
|
|
|
pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
|
perf tools: Fix piped mode read code
In __perf_session__process_pipe_events(), there was a risk we would read
more than what a union perf_event struct can hold. this could happen in
case, perf is reading a file which contains new record types it does not
know about and which are larger than anything it knows about.
In general, perf is supposed to skip records it does not understand, but
in pipe mode, those have to be read and ignored. The fixed size header
contains the size of the record, but that size may be larger than union
perf_event, yet it was used as the backing to the read in:
union perf_event event;
void *p;
size = event->header.size;
p = &event;
p += sizeof(struct perf_event_header);
if (size - sizeof(struct perf_event_header)) {
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
We fix this by allocating a buffer based on the size reported in the
header. We reuse the buffer as much as we can. We realloc in case it
becomes too small. In the common case, the performance impact is
negligible.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-15 19:28:12 +08:00
|
|
|
head, event->header.size, event->header.type);
|
2012-04-17 02:42:51 +08:00
|
|
|
err = -EINVAL;
|
|
|
|
goto out_err;
|
2010-04-02 12:59:15 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
head += size;
|
|
|
|
|
|
|
|
if (skip > 0)
|
|
|
|
head += skip;
|
|
|
|
|
|
|
|
if (!session_done())
|
|
|
|
goto more;
|
|
|
|
done:
|
|
|
|
err = 0;
|
|
|
|
out_err:
|
perf tools: Fix piped mode read code
In __perf_session__process_pipe_events(), there was a risk we would read
more than what a union perf_event struct can hold. this could happen in
case, perf is reading a file which contains new record types it does not
know about and which are larger than anything it knows about.
In general, perf is supposed to skip records it does not understand, but
in pipe mode, those have to be read and ignored. The fixed size header
contains the size of the record, but that size may be larger than union
perf_event, yet it was used as the backing to the read in:
union perf_event event;
void *p;
size = event->header.size;
p = &event;
p += sizeof(struct perf_event_header);
if (size - sizeof(struct perf_event_header)) {
err = readn(self->fd, p, size - sizeof(struct perf_event_header));
We fix this by allocating a buffer based on the size reported in the
header. We reuse the buffer as much as we can. We realloc in case it
becomes too small. In the common case, the performance impact is
negligible.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1337081295-10303-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-15 19:28:12 +08:00
|
|
|
free(buf);
|
2011-11-28 18:30:20 +08:00
|
|
|
perf_session__warn_about_errors(self, tool);
|
2010-12-01 01:49:53 +08:00
|
|
|
perf_session_free_sample_buffers(self);
|
2010-04-02 12:59:15 +08:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2011-05-23 19:06:28 +08:00
|
|
|
static union perf_event *
|
|
|
|
fetch_mmaped_event(struct perf_session *session,
|
|
|
|
u64 head, size_t mmap_size, char *buf)
|
|
|
|
{
|
|
|
|
union perf_event *event;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Ensure we have enough space remaining to read
|
|
|
|
* the size of the event in the headers.
|
|
|
|
*/
|
|
|
|
if (head + sizeof(event->header) > mmap_size)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
event = (union perf_event *)(buf + head);
|
|
|
|
|
|
|
|
if (session->header.needs_swap)
|
|
|
|
perf_event_header__bswap(&event->header);
|
|
|
|
|
|
|
|
if (head + event->header.size > mmap_size)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
return event;
|
|
|
|
}
|
|
|
|
|
2010-12-01 01:49:38 +08:00
|
|
|
int __perf_session__process_events(struct perf_session *session,
|
2010-02-04 02:52:05 +08:00
|
|
|
u64 data_offset, u64 data_size,
|
2011-11-28 18:30:20 +08:00
|
|
|
u64 file_size, struct perf_tool *tool)
|
2009-12-28 07:36:59 +08:00
|
|
|
{
|
2010-12-01 01:49:46 +08:00
|
|
|
u64 head, page_offset, file_offset, file_pos, progress_next;
|
2010-12-01 01:49:49 +08:00
|
|
|
int err, mmap_prot, mmap_flags, map_idx = 0;
|
2010-12-01 01:49:46 +08:00
|
|
|
size_t page_size, mmap_size;
|
2010-12-01 01:49:49 +08:00
|
|
|
char *buf, *mmaps[8];
|
2011-01-30 00:01:45 +08:00
|
|
|
union perf_event *event;
|
2009-12-28 07:36:59 +08:00
|
|
|
uint32_t size;
|
2010-12-01 01:49:38 +08:00
|
|
|
|
2011-11-28 18:30:20 +08:00
|
|
|
perf_tool__fill_defaults(tool);
|
2009-12-28 07:36:59 +08:00
|
|
|
|
2010-01-15 04:30:04 +08:00
|
|
|
page_size = sysconf(_SC_PAGESIZE);
|
2009-12-28 07:36:59 +08:00
|
|
|
|
2010-12-01 01:49:38 +08:00
|
|
|
page_offset = page_size * (data_offset / page_size);
|
|
|
|
file_offset = page_offset;
|
|
|
|
head = data_offset - page_offset;
|
2009-12-28 07:36:59 +08:00
|
|
|
|
2010-12-01 01:49:44 +08:00
|
|
|
if (data_offset + data_size < file_size)
|
|
|
|
file_size = data_offset + data_size;
|
|
|
|
|
2010-12-01 01:49:46 +08:00
|
|
|
progress_next = file_size / 16;
|
|
|
|
|
|
|
|
mmap_size = session->mmap_window;
|
|
|
|
if (mmap_size > file_size)
|
|
|
|
mmap_size = file_size;
|
|
|
|
|
2010-12-01 01:49:49 +08:00
|
|
|
memset(mmaps, 0, sizeof(mmaps));
|
|
|
|
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
mmap_prot = PROT_READ;
|
|
|
|
mmap_flags = MAP_SHARED;
|
|
|
|
|
2010-12-01 01:49:38 +08:00
|
|
|
if (session->header.needs_swap) {
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
mmap_prot |= PROT_WRITE;
|
|
|
|
mmap_flags = MAP_PRIVATE;
|
|
|
|
}
|
2009-12-28 07:36:59 +08:00
|
|
|
remap:
|
2010-12-01 01:49:46 +08:00
|
|
|
buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd,
|
|
|
|
file_offset);
|
2009-12-28 07:36:59 +08:00
|
|
|
if (buf == MAP_FAILED) {
|
|
|
|
pr_err("failed to mmap file\n");
|
|
|
|
err = -errno;
|
|
|
|
goto out_err;
|
|
|
|
}
|
2010-12-01 01:49:49 +08:00
|
|
|
mmaps[map_idx] = buf;
|
|
|
|
map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
|
2010-12-01 01:49:44 +08:00
|
|
|
file_pos = file_offset + head;
|
2009-12-28 07:36:59 +08:00
|
|
|
|
|
|
|
more:
|
2011-05-23 19:06:28 +08:00
|
|
|
event = fetch_mmaped_event(session, head, mmap_size, buf);
|
|
|
|
if (!event) {
|
2010-12-01 01:49:49 +08:00
|
|
|
if (mmaps[map_idx]) {
|
|
|
|
munmap(mmaps[map_idx], mmap_size);
|
|
|
|
mmaps[map_idx] = NULL;
|
|
|
|
}
|
2009-12-28 07:36:59 +08:00
|
|
|
|
2010-12-01 01:49:38 +08:00
|
|
|
page_offset = page_size * (head / page_size);
|
|
|
|
file_offset += page_offset;
|
|
|
|
head -= page_offset;
|
2009-12-28 07:36:59 +08:00
|
|
|
goto remap;
|
|
|
|
}
|
|
|
|
|
|
|
|
size = event->header.size;
|
|
|
|
|
2010-12-01 01:49:44 +08:00
|
|
|
if (size == 0 ||
|
2011-11-28 18:30:20 +08:00
|
|
|
perf_session__process_event(session, event, tool, file_pos) < 0) {
|
2012-04-17 02:42:51 +08:00
|
|
|
pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
|
|
|
|
file_offset + head, event->header.size,
|
|
|
|
event->header.type);
|
|
|
|
err = -EINVAL;
|
|
|
|
goto out_err;
|
2009-12-28 07:36:59 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
head += size;
|
2010-12-01 01:49:44 +08:00
|
|
|
file_pos += size;
|
2009-12-28 07:36:59 +08:00
|
|
|
|
2010-12-01 01:49:46 +08:00
|
|
|
if (file_pos >= progress_next) {
|
|
|
|
progress_next += file_size / 16;
|
2011-10-25 23:29:11 +08:00
|
|
|
ui_progress__update(file_pos, file_size,
|
|
|
|
"Processing events...");
|
2010-12-01 01:49:46 +08:00
|
|
|
}
|
|
|
|
|
2010-12-01 01:49:44 +08:00
|
|
|
if (file_pos < file_size)
|
2009-12-28 07:36:59 +08:00
|
|
|
goto more;
|
2010-12-01 01:49:44 +08:00
|
|
|
|
2009-12-28 07:36:59 +08:00
|
|
|
err = 0;
|
2010-04-24 06:04:12 +08:00
|
|
|
/* do the final flush for ordered samples */
|
2010-12-01 01:49:38 +08:00
|
|
|
session->ordered_samples.next_flush = ULLONG_MAX;
|
2011-11-28 18:30:20 +08:00
|
|
|
flush_sample_queue(session, tool);
|
2009-12-28 07:36:59 +08:00
|
|
|
out_err:
|
2011-11-28 18:30:20 +08:00
|
|
|
perf_session__warn_about_errors(session, tool);
|
2010-12-01 01:49:53 +08:00
|
|
|
perf_session_free_sample_buffers(session);
|
2009-12-28 07:36:59 +08:00
|
|
|
return err;
|
|
|
|
}
|
2009-12-28 07:37:01 +08:00
|
|
|
|
2010-02-04 02:52:05 +08:00
|
|
|
int perf_session__process_events(struct perf_session *self,
|
2011-11-28 18:30:20 +08:00
|
|
|
struct perf_tool *tool)
|
2010-02-04 02:52:05 +08:00
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (perf_session__register_idle_thread(self) == NULL)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2010-04-02 12:59:15 +08:00
|
|
|
if (!self->fd_pipe)
|
|
|
|
err = __perf_session__process_events(self,
|
|
|
|
self->header.data_offset,
|
|
|
|
self->header.data_size,
|
2011-11-28 18:30:20 +08:00
|
|
|
self->size, tool);
|
2010-04-02 12:59:15 +08:00
|
|
|
else
|
2011-11-28 18:30:20 +08:00
|
|
|
err = __perf_session__process_pipe_events(self, tool);
|
2010-07-27 22:46:12 +08:00
|
|
|
|
2010-02-04 02:52:05 +08:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2012-08-02 06:15:52 +08:00
|
|
|
bool perf_session__has_traces(struct perf_session *session, const char *msg)
|
2009-12-28 07:37:01 +08:00
|
|
|
{
|
2012-08-02 06:15:52 +08:00
|
|
|
if (!(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_RAW)) {
|
2009-12-28 07:37:02 +08:00
|
|
|
pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
|
|
|
|
return false;
|
2009-12-28 07:37:01 +08:00
|
|
|
}
|
|
|
|
|
2009-12-28 07:37:02 +08:00
|
|
|
return true;
|
2009-12-28 07:37:01 +08:00
|
|
|
}
|
2010-01-06 02:50:31 +08:00
|
|
|
|
2011-11-28 17:56:39 +08:00
|
|
|
int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
|
|
|
|
const char *symbol_name, u64 addr)
|
2010-01-06 02:50:31 +08:00
|
|
|
{
|
|
|
|
char *bracket;
|
2010-02-04 02:52:00 +08:00
|
|
|
enum map_type i;
|
2010-04-19 13:32:50 +08:00
|
|
|
struct ref_reloc_sym *ref;
|
|
|
|
|
|
|
|
ref = zalloc(sizeof(struct ref_reloc_sym));
|
|
|
|
if (ref == NULL)
|
|
|
|
return -ENOMEM;
|
2010-01-06 02:50:31 +08:00
|
|
|
|
2010-04-19 13:32:50 +08:00
|
|
|
ref->name = strdup(symbol_name);
|
|
|
|
if (ref->name == NULL) {
|
|
|
|
free(ref);
|
2010-01-06 02:50:31 +08:00
|
|
|
return -ENOMEM;
|
2010-04-19 13:32:50 +08:00
|
|
|
}
|
2010-01-06 02:50:31 +08:00
|
|
|
|
2010-04-19 13:32:50 +08:00
|
|
|
bracket = strchr(ref->name, ']');
|
2010-01-06 02:50:31 +08:00
|
|
|
if (bracket)
|
|
|
|
*bracket = '\0';
|
|
|
|
|
2010-04-19 13:32:50 +08:00
|
|
|
ref->addr = addr;
|
2010-02-04 02:52:00 +08:00
|
|
|
|
|
|
|
for (i = 0; i < MAP__NR_TYPES; ++i) {
|
2010-04-19 13:32:50 +08:00
|
|
|
struct kmap *kmap = map__kmap(maps[i]);
|
|
|
|
kmap->ref_reloc_sym = ref;
|
2010-02-04 02:52:00 +08:00
|
|
|
}
|
|
|
|
|
2010-01-06 02:50:31 +08:00
|
|
|
return 0;
|
|
|
|
}
|
2010-05-10 06:57:08 +08:00
|
|
|
|
|
|
|
size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp)
|
|
|
|
{
|
|
|
|
return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) +
|
|
|
|
__dsos__fprintf(&self->host_machine.user_dsos, fp) +
|
|
|
|
machines__fprintf_dsos(&self->machines, fp);
|
|
|
|
}
|
2010-05-20 00:41:23 +08:00
|
|
|
|
|
|
|
size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp,
|
|
|
|
bool with_hits)
|
|
|
|
{
|
|
|
|
size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits);
|
|
|
|
return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits);
|
|
|
|
}
|
2011-03-06 08:40:06 +08:00
|
|
|
|
|
|
|
size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
|
|
|
|
{
|
|
|
|
struct perf_evsel *pos;
|
|
|
|
size_t ret = fprintf(fp, "Aggregated stats:\n");
|
|
|
|
|
|
|
|
ret += hists__fprintf_nr_events(&session->hists, fp);
|
|
|
|
|
|
|
|
list_for_each_entry(pos, &session->evlist->entries, node) {
|
2012-06-12 23:34:58 +08:00
|
|
|
ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos));
|
2011-03-06 08:40:06 +08:00
|
|
|
ret += hists__fprintf_nr_events(&pos->hists, fp);
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
2011-03-10 13:23:27 +08:00
|
|
|
|
2011-11-09 23:24:25 +08:00
|
|
|
size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* FIXME: Here we have to actually print all the machines in this
|
|
|
|
* session, not just the host...
|
|
|
|
*/
|
|
|
|
return machine__fprintf(&session->host_machine, fp);
|
|
|
|
}
|
|
|
|
|
|
|
|
void perf_session__remove_thread(struct perf_session *session,
|
|
|
|
struct thread *th)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* FIXME: This one makes no sense, we need to remove the thread from
|
|
|
|
* the machine it belongs to, perf_session can have many machines, so
|
|
|
|
* doing it always on ->host_machine is wrong. Fix when auditing all
|
|
|
|
* the 'perf kvm' code.
|
|
|
|
*/
|
|
|
|
machine__remove_thread(&session->host_machine, th);
|
|
|
|
}
|
|
|
|
|
2011-04-07 11:54:20 +08:00
|
|
|
struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
|
|
|
|
unsigned int type)
|
|
|
|
{
|
|
|
|
struct perf_evsel *pos;
|
|
|
|
|
|
|
|
list_for_each_entry(pos, &session->evlist->entries, node) {
|
|
|
|
if (pos->attr.type == type)
|
|
|
|
return pos;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2011-11-28 17:56:39 +08:00
|
|
|
void perf_event__print_ip(union perf_event *event, struct perf_sample *sample,
|
2012-06-11 21:20:03 +08:00
|
|
|
struct machine *machine, int print_sym,
|
|
|
|
int print_dso, int print_symoffset)
|
2011-03-10 13:23:27 +08:00
|
|
|
{
|
|
|
|
struct addr_location al;
|
|
|
|
struct callchain_cursor_node *node;
|
|
|
|
|
2011-11-28 17:56:39 +08:00
|
|
|
if (perf_event__preprocess_sample(event, machine, &al, sample,
|
2011-03-10 13:23:27 +08:00
|
|
|
NULL) < 0) {
|
|
|
|
error("problem processing %d event, skipping it.\n",
|
|
|
|
event->header.type);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (symbol_conf.use_callchain && sample->callchain) {
|
|
|
|
|
2012-06-11 21:20:03 +08:00
|
|
|
if (machine__resolve_callchain(machine, al.thread,
|
2011-03-10 13:23:27 +08:00
|
|
|
sample->callchain, NULL) != 0) {
|
|
|
|
if (verbose)
|
|
|
|
error("Failed to resolve callchain. Skipping\n");
|
|
|
|
return;
|
|
|
|
}
|
2012-05-31 13:43:26 +08:00
|
|
|
callchain_cursor_commit(&callchain_cursor);
|
2011-03-10 13:23:27 +08:00
|
|
|
|
|
|
|
while (1) {
|
2012-05-31 13:43:26 +08:00
|
|
|
node = callchain_cursor_current(&callchain_cursor);
|
2011-03-10 13:23:27 +08:00
|
|
|
if (!node)
|
|
|
|
break;
|
|
|
|
|
2011-05-28 04:28:43 +08:00
|
|
|
printf("\t%16" PRIx64, node->ip);
|
|
|
|
if (print_sym) {
|
2012-01-30 12:42:57 +08:00
|
|
|
printf(" ");
|
|
|
|
symbol__fprintf_symname(node->sym, stdout);
|
2011-05-28 04:28:44 +08:00
|
|
|
}
|
|
|
|
if (print_dso) {
|
2012-01-30 12:42:57 +08:00
|
|
|
printf(" (");
|
2012-05-30 12:58:26 +08:00
|
|
|
map__fprintf_dsoname(node->map, stdout);
|
2012-01-30 12:42:57 +08:00
|
|
|
printf(")");
|
2011-05-28 04:28:43 +08:00
|
|
|
}
|
|
|
|
printf("\n");
|
2011-03-10 13:23:27 +08:00
|
|
|
|
2012-05-31 13:43:26 +08:00
|
|
|
callchain_cursor_advance(&callchain_cursor);
|
2011-03-10 13:23:27 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
} else {
|
2011-05-30 23:16:27 +08:00
|
|
|
printf("%16" PRIx64, sample->ip);
|
2011-05-28 04:28:43 +08:00
|
|
|
if (print_sym) {
|
2012-01-30 12:42:57 +08:00
|
|
|
printf(" ");
|
2012-01-30 12:43:15 +08:00
|
|
|
if (print_symoffset)
|
|
|
|
symbol__fprintf_symname_offs(al.sym, &al,
|
|
|
|
stdout);
|
|
|
|
else
|
|
|
|
symbol__fprintf_symname(al.sym, stdout);
|
2011-05-28 04:28:44 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if (print_dso) {
|
2012-01-30 12:42:57 +08:00
|
|
|
printf(" (");
|
|
|
|
map__fprintf_dsoname(al.map, stdout);
|
|
|
|
printf(")");
|
2011-05-28 04:28:43 +08:00
|
|
|
}
|
2011-03-10 13:23:27 +08:00
|
|
|
}
|
|
|
|
}
|
2011-07-04 19:57:50 +08:00
|
|
|
|
|
|
|
int perf_session__cpu_bitmap(struct perf_session *session,
|
|
|
|
const char *cpu_list, unsigned long *cpu_bitmap)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
struct cpu_map *map;
|
|
|
|
|
|
|
|
for (i = 0; i < PERF_TYPE_MAX; ++i) {
|
|
|
|
struct perf_evsel *evsel;
|
|
|
|
|
|
|
|
evsel = perf_session__find_first_evtype(session, i);
|
|
|
|
if (!evsel)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
|
|
|
|
pr_err("File does not contain CPU events. "
|
|
|
|
"Remove -c option to proceed.\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
map = cpu_map__new(cpu_list);
|
2011-11-14 01:45:27 +08:00
|
|
|
if (map == NULL) {
|
|
|
|
pr_err("Invalid cpu_list\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2011-07-04 19:57:50 +08:00
|
|
|
|
|
|
|
for (i = 0; i < map->nr; i++) {
|
|
|
|
int cpu = map->map[i];
|
|
|
|
|
|
|
|
if (cpu >= MAX_NR_CPUS) {
|
|
|
|
pr_err("Requested CPU %d too large. "
|
|
|
|
"Consider raising MAX_NR_CPUS\n", cpu);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
set_bit(cpu, cpu_bitmap);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
perf tools: Make perf.data more self-descriptive (v8)
The goal of this patch is to include more information about the host
environment into the perf.data so it is more self-descriptive. Overtime,
profiles are captured on various machines and it becomes hard to track
what was recorded, on what machine and when.
This patch provides a way to solve this by extending the perf.data file
with basic information about the host machine. To add those extensions,
we leverage the feature bits capabilities of the perf.data format. The
change is backward compatible with existing perf.data files.
We define the following useful new extensions:
- HEADER_HOSTNAME: the hostname
- HEADER_OSRELEASE: the kernel release number
- HEADER_ARCH: the hw architecture
- HEADER_CPUDESC: generic CPU description
- HEADER_NRCPUS: number of online/avail cpus
- HEADER_CMDLINE: perf command line
- HEADER_VERSION: perf version
- HEADER_TOPOLOGY: cpu topology
- HEADER_EVENT_DESC: full event description (attrs)
- HEADER_CPUID: easy-to-parse low level CPU identication
The small granularity for the entries is to make it easier to extend
without breaking backward compatiblity. Many entries are provided as
ASCII strings.
Perf report/script have been modified to print the basic information as
easy-to-parse ASCII strings. Extended information about CPU and NUMA
topology may be requested with the -I option.
Thanks to David Ahern for reviewing and testing the many versions of
this patch.
$ perf report --stdio
# ========
# captured on : Mon Sep 26 15:22:14 2011
# hostname : quad
# os release : 3.1.0-rc4-tip
# perf version : 3.1.0-rc4
# arch : x86_64
# nrcpus online : 4
# nrcpus avail : 4
# cpudesc : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
# cpuid : GenuineIntel,6,15,11
# total memory : 8105360 kB
# cmdline : /home/eranian/perfmon/official/tip/build/tools/perf/perf record date
# event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 29, 30, 31,
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
...
$ perf report --stdio -I
# ========
# captured on : Mon Sep 26 15:22:14 2011
# hostname : quad
# os release : 3.1.0-rc4-tip
# perf version : 3.1.0-rc4
# arch : x86_64
# nrcpus online : 4
# nrcpus avail : 4
# cpudesc : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
# cpuid : GenuineIntel,6,15,11
# total memory : 8105360 kB
# cmdline : /home/eranian/perfmon/official/tip/build/tools/perf/perf record date
# event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 29, 30, 31,
# sibling cores : 0-3
# sibling threads : 0
# sibling threads : 1
# sibling threads : 2
# sibling threads : 3
# node0 meminfo : total = 8320608 kB, free = 7571024 kB
# node0 cpu list : 0-3
# ========
#
...
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/20110930134040.GA5575@quad
Signed-off-by: Stephane Eranian <eranian@google.com>
[ committer notes: Use --show-info in the tools as was in the docs, rename
perf_header_fprintf_info to perf_file_section__fprintf_info, fixup
conflict with f69b64f7 "perf: Support setting the disassembler style" ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2011-09-30 21:40:40 +08:00
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void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
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bool full)
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{
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struct stat st;
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int ret;
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if (session == NULL || fp == NULL)
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return;
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ret = fstat(session->fd, &st);
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if (ret == -1)
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return;
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fprintf(fp, "# ========\n");
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fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
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perf_header__fprintf_info(session, fp, full);
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fprintf(fp, "# ========\n#\n");
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}
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2012-06-28 00:08:42 +08:00
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int __perf_session__set_tracepoints_handlers(struct perf_session *session,
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const struct perf_evsel_str_handler *assocs,
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size_t nr_assocs)
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{
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struct perf_evlist *evlist = session->evlist;
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struct event_format *format;
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struct perf_evsel *evsel;
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char *tracepoint, *name;
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size_t i;
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int err;
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for (i = 0; i < nr_assocs; i++) {
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err = -ENOMEM;
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tracepoint = strdup(assocs[i].name);
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if (tracepoint == NULL)
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goto out;
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err = -ENOENT;
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name = strchr(tracepoint, ':');
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if (name == NULL)
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goto out_free;
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*name++ = '\0';
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format = pevent_find_event_by_name(session->pevent,
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tracepoint, name);
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if (format == NULL) {
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/*
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* Adding a handler for an event not in the session,
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* just ignore it.
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*/
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goto next;
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}
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evsel = perf_evlist__find_tracepoint_by_id(evlist, format->id);
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if (evsel == NULL)
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goto next;
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err = -EEXIST;
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if (evsel->handler.func != NULL)
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goto out_free;
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evsel->handler.func = assocs[i].handler;
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next:
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free(tracepoint);
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}
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err = 0;
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out:
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return err;
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out_free:
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free(tracepoint);
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goto out;
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}
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