Clean up register initialization and make use of BIT_ULL(x) where
appropriate. This should not affect logic and functionality.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Jörg Rödel <joro@8bytes.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: iommu@lists.linux-foundation.org
Link: http://lkml.kernel.org/r/1487926102-13073-3-git-send-email-Suravee.Suthikulpanit@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Now that Intel PT supports more types of trace content than just branch
tracing, it may be useful to allow the user to disable branch tracing
when it is not needed.
The special case is BDW, where not setting BranchEn is not supported.
This is slightly trickier than necessary, because up to this moment
the driver has been setting BranchEn automatically and the userspace
assumes as much. Instead of reversing the semantics of BranchEn, we
introduce a 'passthrough' bit, which will forego the default and allow
the user to set BranchEn to their heart's content.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20170206144140.14402-1-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Fixes to multiple issues in virtio. Most notably
a regression fix for crashes reported by Fedora users.
Hybernate is still reportedly broken, working on it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin:
"Fixes to multiple issues in virtio.
Most notably a regression fix for crashes reported by Fedora users.
Hibernate is still reportedly broken, working on it"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio_balloon: prevent uninitialized variable use
virtio-balloon: use actual number of stats for stats queue buffers
virtio_balloon: init 1st buffer in stats vq
virtio_pci: fix out of bound access for msix_names
The latest gcc-7.0.1 snapshot reports a new warning:
virtio/virtio_balloon.c: In function 'update_balloon_stats':
virtio/virtio_balloon.c:258:26: error: 'events[2]' is used uninitialized in this function [-Werror=uninitialized]
virtio/virtio_balloon.c:260:26: error: 'events[3]' is used uninitialized in this function [-Werror=uninitialized]
virtio/virtio_balloon.c:261:56: error: 'events[18]' is used uninitialized in this function [-Werror=uninitialized]
virtio/virtio_balloon.c:262:56: error: 'events[17]' is used uninitialized in this function [-Werror=uninitialized]
This seems absolutely right, so we should add an extra check to
prevent copying uninitialized stack data into the statistics.
>From all I can tell, this has been broken since the statistics code
was originally added in 2.6.34.
Fixes: 9564e138b1 ("virtio: Add memory statistics reporting to the balloon driver (V4)")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The virtio balloon driver contained a not-so-obvious invariant that
update_balloon_stats has to update exactly VIRTIO_BALLOON_S_NR counters
in order to send valid stats to the host. This commit fixes it by having
update_balloon_stats return the actual number of counters, and its
callers use it when pushing buffers to the stats virtqueue.
Note that it is still out of spec to change the number of counters
at run-time. "Driver MUST supply the same subset of statistics in all
buffers submitted to the statsq."
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When init_vqs runs, virtio_balloon.stats is either uninitialized or
contains stale values. The host updates its state with garbage data
because it has no way of knowing that this is just a marker buffer
used for signaling.
This patch updates the stats before pushing the initial buffer.
Alternative fixes:
* Push an empty buffer in init_vqs. Not easily done with the current
virtio implementation and violates the spec "Driver MUST supply the
same subset of statistics in all buffers submitted to the statsq".
* Push a buffer with invalid tags in init_vqs. Violates the same
spec clause, plus "invalid tag" is not really defined.
Note: the spec says:
When using the legacy interface, the device SHOULD ignore all values in
the first buffer in the statsq supplied by the driver after device
initialization. Note: Historically, drivers supplied an uninitialized
buffer in the first buffer.
Unfortunately QEMU does not seem to implement the recommendation
even for the legacy interface.
Cc: stable@vger.kernel.org
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Fedora has received multiple reports of crashes when running
4.11 as a guest
https://bugzilla.redhat.com/show_bug.cgi?id=1430297https://bugzilla.redhat.com/show_bug.cgi?id=1434462https://bugzilla.kernel.org/show_bug.cgi?id=194911https://bugzilla.redhat.com/show_bug.cgi?id=1433899
The crashes are not always consistent but they are generally
some flavor of oops or GPF in virtio related code. Multiple people
have done bisections (Thank you Thorsten Leemhuis and
Richard W.M. Jones) and found this commit to be at fault
07ec51480b is the first bad commit
commit 07ec51480b
Author: Christoph Hellwig <hch@lst.de>
Date: Sun Feb 5 18:15:19 2017 +0100
virtio_pci: use shared interrupts for virtqueues
The issue seems to be an out of bounds access to the msix_names
array corrupting kernel memory.
Fixes: 07ec51480b ("virtio_pci: use shared interrupts for virtqueues")
Reported-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Tested-by: Thorsten Leemhuis <linux@leemhuis.info>
SRCU uses a delayed work item. Skip cleaning it up, and
the result is use-after-free in the work item callbacks.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Suggested-by: Dmitry Vyukov <dvyukov@google.com>
Cc: stable@vger.kernel.org
Fixes: 0eb05bf290
Reviewed-by: Xiao Guangrong <xiaoguangrong.eric@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The nested_ept_enabled flag introduced in commit 7ca29de213 was not
computed correctly. We are interested only in L1's EPT state, not the
the combined L0+L1 value.
In particular, if L0 uses EPT but L1 does not, nested_ept_enabled must
be false to make sure that PDPSTRs are loaded based on CR3 as usual,
because the special case described in 26.3.2.4 Loading Page-Directory-
Pointer-Table Entries does not apply.
Fixes: 7ca29de213 ("KVM: nVMX: fix CR3 load if L2 uses PAE paging and EPT")
Cc: qemu-stable@nongnu.org
Reported-by: Wanpeng Li <wanpeng.li@hotmail.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
or VM memory are not put thus leaked in kvm_iommu_unmap_memslots() when
destroy VM.
This is consistent with current vfio implementation.
Signed-off-by: herongguang <herongguang.he@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
New features:
- Handle inline functions in callchains (Jin Yao)
- Enable sorting by srcline as key (Milian Wolff)
Fixes:
- Fix no_size logic in addr_filter__resolve_kernel_syms() in the
auxtrace code (Adrian Hunter)
- Fix some thread refcount leaks in 'perf trace' (Arnaldo Carvalho de Melo)
- Fix divide by zero when calculating percent for an event in a group in
the annotate by source line code (Taeung Song)
- build-id files now aren't anymore symlinks, their parent directories
are, so readlink the later (Taeung Song)
- Assorted fixes for null termination problems, mostly related to
readlink, detected by valgrind (Tommi Rantala)
Infrastructure:
- Make vfs_getname probe point logic in 'perf trace' more robust
wrt length of pathname (Arnaldo Carvalho de Melo)
- Remove unused 'prefix' parameter from builtins main functions (Arnaldo Carvalho de Melo)
- Show 'perf list sdt' option in man page (Ravi Bangoria)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-4.12-20170327' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
New features:
- Handle inline functions in callchains (Jin Yao)
- Enable sorting by srcline as key (Milian Wolff)
Fixes:
- Fix no_size logic in addr_filter__resolve_kernel_syms() in the
auxtrace code (Adrian Hunter)
- Fix some thread refcount leaks in 'perf trace' (Arnaldo Carvalho de Melo)
- Fix divide by zero when calculating percent for an event in a group in
the annotate by source line code (Taeung Song)
- build-id files now aren't anymore symlinks, their parent directories
are, so readlink the later (Taeung Song)
- Assorted fixes for null termination problems, mostly related to
readlink, detected by valgrind (Tommi Rantala)
Infrastructure changes:
- Make vfs_getname probe point logic in 'perf trace' more robust
wrt length of pathname (Arnaldo Carvalho de Melo)
- Remove unused 'prefix' parameter from builtins main functions (Arnaldo Carvalho de Melo)
- Show 'perf list sdt' option in man page (Ravi Bangoria)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Simplification: it is easier to open /proc/self/exe than /proc/$pid/exe.
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170322130624.21881-7-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Ensure that the string that we read from the data file is null terminated.
Valgrind was complaining:
==31357== Invalid read of size 1
==31357== at 0x4EC8C1: __strtok_r_1c (string2.h:200)
==31357== by 0x4EC8C1: parse_ftrace_printk (trace-event-parse.c:161)
==31357== by 0x4F82A8: read_ftrace_printk (trace-event-read.c:204)
==31357== by 0x4F82A8: trace_report (trace-event-read.c:468)
==31357== by 0x4CD552: process_tracing_data (header.c:1576)
==31357== by 0x4D3397: perf_file_section__process (header.c:2705)
==31357== by 0x4D3397: perf_header__process_sections (header.c:2488)
==31357== by 0x4D3397: perf_session__read_header (header.c:2925)
==31357== by 0x4E71E2: perf_session__open (session.c:32)
==31357== by 0x4E71E2: perf_session__new (session.c:139)
==31357== by 0x429F5D: cmd_annotate (builtin-annotate.c:472)
==31357== by 0x497150: run_builtin (perf.c:359)
==31357== by 0x428CE0: handle_internal_command (perf.c:421)
==31357== by 0x428CE0: run_argv (perf.c:467)
==31357== by 0x428CE0: main (perf.c:614)
==31357== Address 0x8ac0efb is 0 bytes after a block of size 1,963 alloc'd
==31357== at 0x4C2DB9D: malloc (vg_replace_malloc.c:299)
==31357== by 0x4F827B: read_ftrace_printk (trace-event-read.c:195)
==31357== by 0x4F827B: trace_report (trace-event-read.c:468)
==31357== by 0x4CD552: process_tracing_data (header.c:1576)
==31357== by 0x4D3397: perf_file_section__process (header.c:2705)
==31357== by 0x4D3397: perf_header__process_sections (header.c:2488)
==31357== by 0x4D3397: perf_session__read_header (header.c:2925)
==31357== by 0x4E71E2: perf_session__open (session.c:32)
==31357== by 0x4E71E2: perf_session__new (session.c:139)
==31357== by 0x429F5D: cmd_annotate (builtin-annotate.c:472)
==31357== by 0x497150: run_builtin (perf.c:359)
==31357== by 0x428CE0: handle_internal_command (perf.c:421)
==31357== by 0x428CE0: run_argv (perf.c:467)
==31357== by 0x428CE0: main (perf.c:614)
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170322130624.21881-6-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Ensure that we have space for the null byte in buf.
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170322130624.21881-5-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Ensure that the string in buf is null terminated.
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170322130624.21881-4-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Valgrind was complaining:
$ valgrind ./perf list >/dev/null
==11643== Memcheck, a memory error detector
==11643== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==11643== Using Valgrind-3.12.0 and LibVEX; rerun with -h for copyright info
==11643== Command: ./perf list
==11643==
==11643== Conditional jump or move depends on uninitialised value(s)
==11643== at 0x4C30620: rindex (vg_replace_strmem.c:199)
==11643== by 0x49DAA9: build_id_cache__origname (build-id.c:198)
==11643== by 0x49E1C7: build_id_cache__valid_id (build-id.c:222)
==11643== by 0x49E1C7: build_id_cache__list_all (build-id.c:507)
==11643== by 0x4B9C8F: print_sdt_events (parse-events.c:2067)
==11643== by 0x4BB0B3: print_events (parse-events.c:2313)
==11643== by 0x439501: cmd_list (builtin-list.c:53)
==11643== by 0x497150: run_builtin (perf.c:359)
==11643== by 0x428CE0: handle_internal_command (perf.c:421)
==11643== by 0x428CE0: run_argv (perf.c:467)
==11643== by 0x428CE0: main (perf.c:614)
[...]
Additionally, a zero length result from readlink() is not very interesting.
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170322130624.21881-3-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Valgrind was complaining:
==2633== Syscall param open(filename) points to unaddressable byte(s)
==2633== at 0x5281CC0: __open_nocancel (syscall-template.S:84)
==2633== by 0x537D38: open (fcntl2.h:53)
==2633== by 0x537D38: get_sdt_note_list (symbol-elf.c:2017)
==2633== by 0x5396FD: probe_cache__scan_sdt (probe-file.c:700)
==2633== by 0x49EA2C: build_id_cache__add_sdt_cache (build-id.c:625)
==2633== by 0x49EA2C: build_id_cache__add_s (build-id.c:697)
==2633== by 0x49EE72: build_id_cache__add_b (build-id.c:717)
==2633== by 0x49EE72: dso__cache_build_id (build-id.c:782)
==2633== by 0x49F190: __dsos__cache_build_ids (build-id.c:793)
==2633== by 0x49F190: machine__cache_build_ids (build-id.c:801)
==2633== by 0x49F190: perf_session__cache_build_ids (build-id.c:815)
==2633== by 0x4CD4F2: write_build_id (header.c:165)
==2633== by 0x4D26F7: do_write_feat (header.c:2296)
==2633== by 0x4D26F7: perf_header__adds_write (header.c:2335)
==2633== by 0x4D26F7: perf_session__write_header (header.c:2414)
==2633== by 0x43B324: __cmd_record (builtin-record.c:1154)
==2633== by 0x43B324: cmd_record (builtin-record.c:1839)
==2633== by 0x455A07: __cmd_record (builtin-kmem.c:1868)
==2633== by 0x455A07: cmd_kmem (builtin-kmem.c:1944)
==2633== by 0x497150: run_builtin (perf.c:359)
==2633== by 0x428CE0: handle_internal_command (perf.c:421)
==2633== by 0x428CE0: run_argv (perf.c:467)
==2633== by 0x428CE0: main (perf.c:614)
==2633== Address 0x0 is not stack'd, malloc'd or (recently) free'd
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tommi Rantala <tommi.t.rantala@nokia.com>
Link: http://lkml.kernel.org/r/20170322130624.21881-2-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Intel Apollo Lake platform and the Denverton microserver.
+ small fixlets.
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Merge tag 'edac_for_4.11_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Pull EDAC updates from Borislav Petkov:
"A new EDAC driver for the Pondicherry2 memory controller IP found in
the Intel Apollo Lake platform and the Denverton microserver.
Plus small fixlets.
Normally I had this queued for 4.12 but Tony requested for the
pnd2_edac driver to possibly land in 4.11 therefore I'm sending it to
you now.
It is a driver for new hardware which people don't have yet so it
shouldn't cause any regressions.
The couple of patches ontop of it show that Qiuxu actually did test it
on the hardware he has access to :)"
* tag 'edac_for_4.11_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
EDAC, pnd2_edac: Fix reported DIMM number
EDAC, pnd2_edac: Fix !EDAC_DEBUG build
EDAC: Select DEBUG_FS
EDAC, pnd2_edac: Add new EDAC driver for Intel SoC platforms
EDAC, i5000, i5400: Fix use of MTR_DRAM_WIDTH macro
EDAC, xgene: Fix wrongly spelled "procesing"
It is wrong way to read link name from a build-id file. Because a
build-id file is not anymore a symbolic link but build-id directory of
it is symbolic link, so fix it.
For example, if build-id file name gotten from
dso__build_id_filename() is as below,
/root/.debug/.build-id/4f/75c7d197c951659d1c1b8b5fd49bcdf8f3f8b1/elf
To correctly read link name of build-id, use the build-id dir path that
is a symbolic link, instead of the above build-id file name like below.
/root/.debug/.build-id/4f/75c7d197c951659d1c1b8b5fd49bcdf8f3f8b1
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1490598638-13947-2-git-send-email-treeze.taeung@gmail.com
Fixes: 01412261d9 ("perf buildid-cache: Use path/to/bin/buildid/elf instead of path/to/bin/buildid")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
- Kconfig fixup for the TI IOdelay pinctrl-single add-on.
- Fix up a typo in the meson i2c ao groups.
- Switch a remapping back to use devm_ioremap() as
devm_ioremap_resource() does not allow for sharing memory
regions.
- Do not clear the Qualcomm irq status bit in irq_unmask(),
as this can lead to missing interrupts while the irq handler
is executing.
- Add irq_request/release_resources() on the ST driver.
- Add a bunch of mysteriously missing pingroups for high
numbered pins in the Qualcomm ipq4019 driver.
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Merge tag 'pinctrl-v4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull more pin control fixes from Linus Walleij:
"Here is a bunch of pin control fixes again
A bit more than I'd like for this subsystem at this point, but what
can I do. They are all driver fixes for hardware issues, as like "we
forgot", "we didn't think of the fact that this could happen", "oops
that one goes there" etc
- Kconfig fixup for the TI IOdelay pinctrl-single add-on
- fix up a typo in the meson i2c ao groups
- switch a remapping back to use devm_ioremap() as
devm_ioremap_resource() does not allow for sharing memory regions
- do not clear the Qualcomm irq status bit in irq_unmask(), as this
can lead to missing interrupts while the irq handler is executing
- add irq_request/release_resources() on the ST driver
- add a bunch of mysteriously missing pingroups for high numbered
pins in the Qualcomm ipq4019 driver"
* tag 'pinctrl-v4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: qcom: ipq4019: add missing pingroups for pins > 70
pinctrl: st: add irq_request/release_resources callbacks
pinctrl: qcom: Don't clear status bit on irq_unmask
pinctrl: samsung: Fix memory mapping code
pinctrl: meson-gxbb: Fix typo in i2c ao groups
pinctrl: ti: The IODelay driver is a DRA7xxx feature so depend on that SoC
Often it is interesting to know how costly a given source line is in
total. Previously, one had to build these sums manually based on all
addresses that pointed to the same source line. This patch introduces
srcline as a sort key, which will do the aggregation for us.
Paired with the recent addition of showing inline frames, this makes
perf report much more useful for many C++ work loads.
The following shows the new feature in action. First, let's show the
status quo output when we sort by address. The result contains many hist
entries that generate the same output:
~~~~~~~~~~~~~~~~
$ perf report --stdio --inline -g address
# Children Self Command Shared Object Symbol
# ........ ........ ............ ................... .........................................
#
99.89% 35.34% cpp-inlining cpp-inlining [.] main
|
|--64.55%--main complex:655
| /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline)
| /usr/include/c++/6.3.1/complex:664 (inline)
| |
| |--60.31%--hypot +20
| | |
| | |--8.52%--__hypot_finite +273
| | |
| | |--7.32%--__hypot_finite +411
...
--35.34%--_start +4194346
__libc_start_main +241
|
|--6.65%--main random.tcc:3326
| /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline)
| /usr/include/c++/6.3.1/bits/random.h:1809 (inline)
| /usr/include/c++/6.3.1/bits/random.h:1818 (inline)
| /usr/include/c++/6.3.1/bits/random.h:185 (inline)
|
|--2.70%--main random.tcc:3326
| /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline)
| /usr/include/c++/6.3.1/bits/random.h:1809 (inline)
| /usr/include/c++/6.3.1/bits/random.h:1818 (inline)
| /usr/include/c++/6.3.1/bits/random.h:185 (inline)
|
|--1.69%--main random.tcc:3326
| /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline)
| /usr/include/c++/6.3.1/bits/random.h:1809 (inline)
| /usr/include/c++/6.3.1/bits/random.h:1818 (inline)
| /usr/include/c++/6.3.1/bits/random.h:185 (inline)
...
~~~~~~~~~~~~~~~~
With this patch and `-g srcline` we instead get the following output:
~~~~~~~~~~~~~~~~
$ perf report --stdio --inline -g srcline
# Children Self Command Shared Object Symbol
# ........ ........ ............ ................... .........................................
#
99.89% 35.34% cpp-inlining cpp-inlining [.] main
|
|--64.55%--main complex:655
| /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline)
| /usr/include/c++/6.3.1/complex:664 (inline)
| |
| |--64.02%--hypot
| | |
| | --59.81%--__hypot_finite
| |
| --0.53%--cabs
|
--35.34%--_start
__libc_start_main
|
|--12.48%--main random.tcc:3326
| /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline)
| /usr/include/c++/6.3.1/bits/random.h:1809 (inline)
| /usr/include/c++/6.3.1/bits/random.h:1818 (inline)
| /usr/include/c++/6.3.1/bits/random.h:185 (inline)
...
~~~~~~~~~~~~~~~~
Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Yao Jin <yao.jin@linux.intel.com>
Link: http://lkml.kernel.org/r/20170318214928.9047-1-milian.wolff@kdab.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
If the address belongs to an inlined function, the source information
back to the first non-inlined function will be printed.
For example:
1. Show inlined function name
perf report -g function --inline
- 0.69% 0.00% inline ld-2.23.so [.] dl_main
- dl_main
0.56% _dl_relocate_object
_dl_relocate_object (inline)
elf_dynamic_do_Rela (inline)
2. Show the file/line information
perf report -g address --inline
- 0.69% 0.00% inline ld-2.23.so [.] _dl_start
_dl_start rtld.c:307
/build/glibc-GKVZIf/glibc-2.23/elf/rtld.c:413 (inline)
+ _dl_sysdep_start dl-sysdep.c:250
Signed-off-by: Yao Jin <yao.jin@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/r/1490474069-15823-6-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
It takes some time to look for inline stack for callgraph addresses. So
it provides new option "--inline" to let user decide if enable this
feature.
--inline:
If a callgraph address belongs to an inlined function, the inline stack
will be printed. Each entry is the inline function name or file/line.
Signed-off-by: Yao Jin <yao.jin@linux.intel.com>
Tested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/r/1490474069-15823-4-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
It would be useful for perf to support a mode to query the inline stack
for a given callgraph address. This would simplify finding the right
code in code that does a lot of inlining.
The srcline.c has contained the code which supports to translate the
address to filename:line_nr. This patch just extends the function to let
it support getting the inline stacks.
It introduces the inline_list which will store the inline function
result (filename:line_nr and funcname).
If BFD lib is not supported, the result is only filename:line_nr.
Signed-off-by: Yao Jin <yao.jin@linux.intel.com>
Tested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/r/1490474069-15823-3-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Introduce dso__name() and filename_split() out of existing code because
these codes will be used in several places in next patch.
For filename_split(), it may also solve a potential memory leak in
existing code. In existing addr2line(),
sep = strchr(filename, ':');
if (sep) {
*sep++ = '\0';
*file = filename;
*line_nr = strtoul(sep, NULL, 0);
ret = 1;
}
out:
pclose(fp);
return ret;
If sep is NULL, filename is not freed or returned via file.
Signed-off-by: Yao Jin <yao.jin@linux.intel.com>
Tested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/r/1490474069-15823-2-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
We got it from the git sources but never used it for anything, with the
place where this would be somehow used remaining:
static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
{
prefix = NULL;
if (p->option & RUN_SETUP)
prefix = NULL; /* setup_perf_directory(); */
Ditch it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-uw5swz05vol0qpr32c5lpvus@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Commit 40218daea1 ("perf list: Show SDT and pre-cached events") added
sdt support in perf list, but it missed to update documentation.
Show sdt option in man perf-list.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20170327025538.1753-1-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Address filtering with kernel symbols incorrectly resulted in the error
"Cannot determine size of symbol" because the no_size logic was the wrong
way around.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Andi Kleen <ak@linux.intel.com>
Cc: stable@vger.kernel.org # v4.9+
Link: http://lkml.kernel.org/r/1490357752-27942-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
A smattering of different small fixes for some random driver subsystems.
Nothing all that major, just resolutions for reported issues and bugs.
All have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"A smattering of different small fixes for some random driver
subsystems. Nothing all that major, just resolutions for reported
issues and bugs.
All have been in linux-next with no reported issues"
* tag 'char-misc-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (21 commits)
extcon: int3496: Set the id pin to direction-input if necessary
extcon: int3496: Use gpiod_get instead of gpiod_get_index
extcon: int3496: Add dependency on X86 as it's Intel specific
extcon: int3496: Add GPIO ACPI mapping table
extcon: int3496: Rename GPIO pins in accordance with binding
vmw_vmci: handle the return value from pci_alloc_irq_vectors correctly
ppdev: fix registering same device name
parport: fix attempt to write duplicate procfiles
auxdisplay: img-ascii-lcd: add missing sentinel entry in img_ascii_lcd_matches
Drivers: hv: vmbus: Don't leak memory when a channel is rescinded
Drivers: hv: vmbus: Don't leak channel ids
Drivers: hv: util: don't forget to init host_ts.lock
Drivers: hv: util: move waiting for release to hv_utils_transport itself
vmbus: remove hv_event_tasklet_disable/enable
vmbus: use rcu for per-cpu channel list
mei: don't wait for os version message reply
mei: fix deadlock on mei reset
intel_th: pci: Add Gemini Lake support
intel_th: pci: Add Denverton SOC support
intel_th: Don't leak module refcount on failure to activate
...
Here is a single kernfs fix for 4.11-rc4 that resolves a reported issue.
It has been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fix from Greg KH:
"Here is a single kernfs fix for 4.11-rc4 that resolves a reported
issue.
It has been in linux-next with no reported issues"
* tag 'driver-core-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
kernfs: Check KERNFS_HAS_RELEASE before calling kernfs_release_file()
Here are some tty and serial driver fixes for 4.11-rc4. One of these
fix a long-standing issue in the ldisc code that was found by Dmitry
Vyukov with his great fuzzing work. The other fixes resolve other
reported issues, and there is one revert of a patch in 4.11-rc1 that
wasn't correct.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are some tty and serial driver fixes for 4.11-rc4.
One of these fix a long-standing issue in the ldisc code that was
found by Dmitry Vyukov with his great fuzzing work. The other fixes
resolve other reported issues, and there is one revert of a patch in
4.11-rc1 that wasn't correct.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: fix data race in tty_ldisc_ref_wait()
tty: don't panic on OOM in tty_set_ldisc()
Revert "tty: serial: pl011: add ttyAMA for matching pl011 console"
tty: acpi/spcr: QDF2400 E44 checks for wrong OEM revision
serial: 8250_dw: Fix breakage when HAVE_CLK=n
serial: 8250_dw: Honor clk_round_rate errors in dw8250_set_termios
Here are some small IIO driver fixes for 4.11-rc4 that resolve a number
of tiny reported issues. All of these have been in linux-next for a
while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull IIO driver fixes from Greg KH:
"Here are some small IIO driver fixes for 4.11-rc4 that resolve a
number of tiny reported issues. All of these have been in linux-next
for a while with no reported issues"
* tag 'staging-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: imu: st_lsm6dsx: fix FIFO_CTRL2 overwrite during watermark configuration
iio: adc: ti_am335x_adc: fix fifo overrun recovery
iio: sw-device: Fix config group initialization
iio: magnetometer: ak8974: remove incorrect __exit markups
iio: hid-sensor-trigger: Change get poll value function order to avoid sensor properties losing after resume from S3
Here are a number of small USB and PHY driver fixes for 4.11-rc4.
Nothing major here, just an bunch of small fixes, and a handfull of good
fixes from Johan for devices with crazy descriptors. There are a few
new device ids in here as well.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY fixes from Greg KH:
"Here are a number of small USB and PHY driver fixes for 4.11-rc4.
Nothing major here, just an bunch of small fixes, and a handfull of
good fixes from Johan for devices with crazy descriptors. There are a
few new device ids in here as well.
All of these have been in linux-next with no reported issues"
* tag 'usb-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
usb: gadget: f_hid: fix: Don't access hidg->req without spinlock held
usb: gadget: udc: remove pointer dereference after free
usb: gadget: f_uvc: Sanity check wMaxPacketSize for SuperSpeed
usb: gadget: f_uvc: Fix SuperSpeed companion descriptor's wBytesPerInterval
usb: gadget: acm: fix endianness in notifications
usb: dwc3: gadget: delay unmap of bounced requests
USB: serial: qcserial: add Dell DW5811e
usb: hub: Fix crash after failure to read BOS descriptor
ACM gadget: fix endianness in notifications
USB: usbtmc: fix probe error path
USB: usbtmc: add missing endpoint sanity check
USB: serial: option: add Quectel UC15, UC20, EC21, and EC25 modems
usb: musb: fix possible spinlock deadlock
usb: musb: dsps: fix iounmap in error and exit paths
usb: musb: cppi41: don't check early-TX-interrupt for Isoch transfer
usb-core: Add LINEAR_FRAME_INTR_BINTERVAL USB quirk
uwb: i1480-dfu: fix NULL-deref at probe
uwb: hwa-rc: fix NULL-deref at probe
USB: wusbcore: fix NULL-deref at probe
USB: uss720: fix NULL-deref at probe
...
- cxl: Route eeh events to all slices for pci_channel_io_perm_failure state
- powerpc/64s: Fix idle wakeup potential to clobber registers
- Revert "powerpc/64: Disable use of radix under a hypervisor"
- gcc-plugins: update architecture list in documentation
Thanks to:
Andrew Donnellan, Nicholas Piggin, Paul Mackerras, Vaibhav Jain.
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Merge tag 'powerpc-4.11-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull more powerpc fixes from Michael Ellerman:
"These are all pretty minor. The fix for idle wakeup would be a bad bug
but has not been observed in practice.
The update to the gcc-plugins docs was Cc'ed to Kees and Jon, Kees
OK'ed it going via powerpc and I didn't hear from Jon.
- cxl: Route eeh events to all slices for pci_channel_io_perm_failure state
- powerpc/64s: Fix idle wakeup potential to clobber registers
- Revert "powerpc/64: Disable use of radix under a hypervisor"
- gcc-plugins: update architecture list in documentation
Thanks to: Andrew Donnellan, Nicholas Piggin, Paul Mackerras, Vaibhav
Jain"
* tag 'powerpc-4.11-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
gcc-plugins: update architecture list in documentation
Revert "powerpc/64: Disable use of radix under a hypervisor"
powerpc/64s: Fix idle wakeup potential to clobber registers
cxl: Route eeh events to all slices for pci_channel_io_perm_failure state
inodes relating to the inline_data and metadata checksum features.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Fix a memory leak on an error path, and two races when modifying
inodes relating to the inline_data and metadata checksum features"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix two spelling nits
ext4: lock the xattr block before checksuming it
jbd2: don't leak memory if setting up journal fails
ext4: mark inode dirty after converting inline directory
DIMM number passed to edac_mc_handle_error() was accidentally hardcoded
to zero. Pass in the correct daddr->dimm value.
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
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Merge tag 'fscrypt-for-linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt
Pull fscrypto fixes from Ted Ts'o:
"A code cleanup and bugfix for fs/crypto"
* tag 'fscrypt-for-linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt:
fscrypt: eliminate ->prepare_context() operation
fscrypt: remove broken support for detecting keyring key revocation
Bug fixes in asus_atk0110, it87 and max31790 drivers.
Added missing API definition to hwmon core.
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Merge tag 'hwmon-for-linus-v4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- bug fixes in asus_atk0110, it87 and max31790 drivers
- added missing API definition to hwmon core
* tag 'hwmon-for-linus-v4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (asus_atk0110) fix uninitialized data access
hwmon: Add missing HWMON_T_ALARM
hwmon: (it87) Avoid registering the same chip on both SIO addresses
hwmon: (max31790) Set correct PWM value
- Fix for dma_ops change in this kernel, resolving the s390, powerpc,
and IOMMU operation
- A few other oops fixes
- The rest are all minor fixes
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"This has been a slow -rc cycle for the RDMA subsystem. We really
haven't had a lot of rc fixes come in. This pull request is the first
of this entire rc cycle and it has all of the suitable fixes so far
and it's still only about 20 patches. The fix for the minor breakage
cause by the dma mapping patchset is in here, as well as a couple
other potential oops fixes, but the rest is more minor.
Summary:
- fix for dma_ops change in this kernel, resolving the s390, powerpc,
and IOMMU operation
- a few other oops fixes
- the rest are all minor fixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
IB/qib: fix false-postive maybe-uninitialized warning
RDMA/iser: Fix possible mr leak on device removal event
IB/device: Convert ib-comp-wq to be CPU-bound
IB/cq: Don't process more than the given budget
IB/rxe: increment msn only when completing a request
uapi: fix rdma/mlx5-abi.h userspace compilation errors
IB/core: Restore I/O MMU, s390 and powerpc support
IB/rxe: Update documentation link
RDMA/ocrdma: fix a type issue in ocrdma_put_pd_num()
IB/rxe: double free on error
RDMA/vmw_pvrdma: Activate device on ethernet link up
RDMA/vmw_pvrdma: Dont hardcode QP header page
RDMA/vmw_pvrdma: Cleanup unused variables
infiniband: Fix alignment of mmap cookies to support VIPT caching
IB/core: Protect against self-requeue of a cq work item
i40iw: Receive netdev events post INET_NOTIFIER state
Pull audit fix from Paul Moore:
"We've got an audit fix, and unfortunately it is big.
While I'm not excited that we need to be sending you something this
large during the -rcX phase, it does fix some very real, and very
tangled, problems relating to locking, backlog queues, and the audit
daemon connection.
This code has passed our testsuite without problem and it has held up
to my ad-hoc stress tests (arguably better than the existing code),
please consider pulling this as fix for the next v4.11-rcX tag"
* 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit:
audit: fix auditd/kernel connection state tracking
Suravee Suthikulpanit