linux/tools/perf/util/debug.c

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/* For general debugging purposes */
#include "../perf.h"
#include <inttypes.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/wait.h>
#include <api/debug.h>
#include <linux/time64.h>
#ifdef HAVE_BACKTRACE_SUPPORT
#include <execinfo.h>
#endif
perf report: Implement initial UI using newt Newt has widespread availability and provides a rather simple API as can be seen by the size of this patch. The work needed to support it will benefit other frontends too. In this initial patch it just checks if the output is a tty, if not it falls back to the previous behaviour, also if newt-devel/libnewt-dev is not installed the previous behaviour is maintaned. Pressing enter on a symbol will annotate it, ESC in the annotation window will return to the report symbol list. More work will be done to remove the special casing in color_fprintf, stop using fmemopen/FILE in the printing of hist_entries, etc. Also the annotation doesn't need to be done via spawning "perf annotate" and then browsing its output, we can do better by calling directly the builtin-annotate.c functions, that would then be moved to tools/perf/util/annotate.c and shared with perf top, etc But lets go by baby steps, this patch already improves perf usability by allowing to quickly do annotations on symbols from the report screen and provides a first experimentation with libnewt/TUI integration of tools. Tested on RHEL5 and Fedora12 X86_64 and on Debian PARISC64 to browse a perf.data file collected on a Fedora12 x86_64 box. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Avi Kivity <avi@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: <1268349164-5822-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-12 07:12:44 +08:00
#include "cache.h"
#include "color.h"
#include "event.h"
#include "debug.h"
#include "print_binary.h"
#include "util.h"
#include "target.h"
#include "sane_ctype.h"
int verbose;
bool dump_trace = false, quiet = false;
int debug_ordered_events;
static int redirect_to_stderr;
perf data: Add perf data to CTF conversion support Adding 'perf data convert' to convert perf data file into different format. This patch adds support for CTF format conversion. To convert perf.data into CTF run: $ perf data convert --to-ctf=./ctf-data/ [ perf data convert: Converted 'perf.data' into CTF data './ctf-data/' ] [ perf data convert: Converted and wrote 11.268 MB (100230 samples) ] The command will create CTF metadata out of perf.data file (or one specified via -i option) and then convert all sample events into single CTF stream. Each sample_type bit is translated into separated CTF event field apart from following exceptions: PERF_SAMPLE_RAW - added in next patch PERF_SAMPLE_READ - TODO PERF_SAMPLE_CALLCHAIN - TODO PERF_SAMPLE_BRANCH_STACK - TODO PERF_SAMPLE_REGS_USER - TODO PERF_SAMPLE_STACK_USER - TODO $ perf --debug=data-convert=2 data convert ... The converted CTF data could be analyzed by CTF tools, like babletrace or tracecompass [1]. $ babeltrace ./ctf-data/ [03:19:13.962125533] (+?.?????????) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 1 } [03:19:13.962130001] (+0.000004468) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 1 } [03:19:13.962131936] (+0.000001935) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 8 } [03:19:13.962133732] (+0.000001796) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 114 } [03:19:13.962135557] (+0.000001825) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 2087 } [03:19:13.962137627] (+0.000002070) cycles: { }, { ip = 0xFFFFFFFF81361938, tid = 20714, pid = 20714, period = 37582 } [03:19:13.962161091] (+0.000023464) cycles: { }, { ip = 0xFFFFFFFF8124218F, tid = 20714, pid = 20714, period = 600246 } [03:19:13.962517569] (+0.000356478) cycles: { }, { ip = 0xFFFFFFFF811A75DB, tid = 20714, pid = 20714, period = 1325731 } [03:19:13.969518008] (+0.007000439) cycles: { }, { ip = 0x34080917B2, tid = 20714, pid = 20714, period = 1144298 } The following members to the ctf-environment were decided to be added to distinguish and specify perf CTF data: - domain It says "kernel" because it contains a kernel trace (not to be confused with a user space like lttng-ust does) - tracer_name It says perf. This can be used to distinguish between lttng and perf CTF based trace. - version The kernel version from stream. In addition to release, this is what it looks like on a Debian kernel: release = "3.14-1-amd64"; version = "3.14.0"; [1] http://projects.eclipse.org/projects/tools.tracecompass Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Reviewed-by: David Ahern <dsahern@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jeremie Galarneau <jgalar@efficios.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1424470628-5969-4-git-send-email-jolsa@kernel.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-21 06:17:00 +08:00
int debug_data_convert;
int veprintf(int level, int var, const char *fmt, va_list args)
{
int ret = 0;
if (var >= level) {
if (use_browser >= 1 && !redirect_to_stderr)
ui_helpline__vshow(fmt, args);
perf report: Implement initial UI using newt Newt has widespread availability and provides a rather simple API as can be seen by the size of this patch. The work needed to support it will benefit other frontends too. In this initial patch it just checks if the output is a tty, if not it falls back to the previous behaviour, also if newt-devel/libnewt-dev is not installed the previous behaviour is maintaned. Pressing enter on a symbol will annotate it, ESC in the annotation window will return to the report symbol list. More work will be done to remove the special casing in color_fprintf, stop using fmemopen/FILE in the printing of hist_entries, etc. Also the annotation doesn't need to be done via spawning "perf annotate" and then browsing its output, we can do better by calling directly the builtin-annotate.c functions, that would then be moved to tools/perf/util/annotate.c and shared with perf top, etc But lets go by baby steps, this patch already improves perf usability by allowing to quickly do annotations on symbols from the report screen and provides a first experimentation with libnewt/TUI integration of tools. Tested on RHEL5 and Fedora12 X86_64 and on Debian PARISC64 to browse a perf.data file collected on a Fedora12 x86_64 box. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Avi Kivity <avi@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: <1268349164-5822-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-12 07:12:44 +08:00
else
ret = vfprintf(stderr, fmt, args);
}
return ret;
}
int eprintf(int level, int var, const char *fmt, ...)
{
va_list args;
int ret;
va_start(args, fmt);
ret = veprintf(level, var, fmt, args);
va_end(args);
return ret;
}
static int veprintf_time(u64 t, const char *fmt, va_list args)
{
int ret = 0;
u64 secs, usecs, nsecs = t;
secs = nsecs / NSEC_PER_SEC;
nsecs -= secs * NSEC_PER_SEC;
usecs = nsecs / NSEC_PER_USEC;
ret = fprintf(stderr, "[%13" PRIu64 ".%06" PRIu64 "] ",
secs, usecs);
ret += vfprintf(stderr, fmt, args);
return ret;
}
int eprintf_time(int level, int var, u64 t, const char *fmt, ...)
{
int ret = 0;
va_list args;
if (var >= level) {
va_start(args, fmt);
ret = veprintf_time(t, fmt, args);
va_end(args);
}
return ret;
}
/*
* Overloading libtraceevent standard info print
* function, display with -v in perf.
*/
void pr_stat(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
veprintf(1, verbose, fmt, args);
va_end(args);
eprintf(1, verbose, "\n");
}
int dump_printf(const char *fmt, ...)
{
va_list args;
int ret = 0;
if (dump_trace) {
va_start(args, fmt);
ret = vprintf(fmt, args);
va_end(args);
}
return ret;
}
static void trace_event_printer(enum binary_printer_ops op,
unsigned int val, void *extra)
{
const char *color = PERF_COLOR_BLUE;
union perf_event *event = (union perf_event *)extra;
unsigned char ch = (unsigned char)val;
switch (op) {
case BINARY_PRINT_DATA_BEGIN:
printf(".");
color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n",
event->header.size);
break;
case BINARY_PRINT_LINE_BEGIN:
printf(".");
break;
case BINARY_PRINT_ADDR:
color_fprintf(stdout, color, " %04x: ", val);
break;
case BINARY_PRINT_NUM_DATA:
color_fprintf(stdout, color, " %02x", val);
break;
case BINARY_PRINT_NUM_PAD:
color_fprintf(stdout, color, " ");
break;
case BINARY_PRINT_SEP:
color_fprintf(stdout, color, " ");
break;
case BINARY_PRINT_CHAR_DATA:
color_fprintf(stdout, color, "%c",
isprint(ch) ? ch : '.');
break;
case BINARY_PRINT_CHAR_PAD:
color_fprintf(stdout, color, " ");
break;
case BINARY_PRINT_LINE_END:
color_fprintf(stdout, color, "\n");
break;
case BINARY_PRINT_DATA_END:
printf("\n");
break;
default:
break;
}
}
void trace_event(union perf_event *event)
{
unsigned char *raw_event = (void *)event;
if (!dump_trace)
return;
print_binary(raw_event, event->header.size, 16,
trace_event_printer, event);
}
static struct debug_variable {
const char *name;
int *ptr;
} debug_variables[] = {
{ .name = "verbose", .ptr = &verbose },
{ .name = "ordered-events", .ptr = &debug_ordered_events},
{ .name = "stderr", .ptr = &redirect_to_stderr},
perf data: Add perf data to CTF conversion support Adding 'perf data convert' to convert perf data file into different format. This patch adds support for CTF format conversion. To convert perf.data into CTF run: $ perf data convert --to-ctf=./ctf-data/ [ perf data convert: Converted 'perf.data' into CTF data './ctf-data/' ] [ perf data convert: Converted and wrote 11.268 MB (100230 samples) ] The command will create CTF metadata out of perf.data file (or one specified via -i option) and then convert all sample events into single CTF stream. Each sample_type bit is translated into separated CTF event field apart from following exceptions: PERF_SAMPLE_RAW - added in next patch PERF_SAMPLE_READ - TODO PERF_SAMPLE_CALLCHAIN - TODO PERF_SAMPLE_BRANCH_STACK - TODO PERF_SAMPLE_REGS_USER - TODO PERF_SAMPLE_STACK_USER - TODO $ perf --debug=data-convert=2 data convert ... The converted CTF data could be analyzed by CTF tools, like babletrace or tracecompass [1]. $ babeltrace ./ctf-data/ [03:19:13.962125533] (+?.?????????) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 1 } [03:19:13.962130001] (+0.000004468) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 1 } [03:19:13.962131936] (+0.000001935) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 8 } [03:19:13.962133732] (+0.000001796) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 114 } [03:19:13.962135557] (+0.000001825) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 2087 } [03:19:13.962137627] (+0.000002070) cycles: { }, { ip = 0xFFFFFFFF81361938, tid = 20714, pid = 20714, period = 37582 } [03:19:13.962161091] (+0.000023464) cycles: { }, { ip = 0xFFFFFFFF8124218F, tid = 20714, pid = 20714, period = 600246 } [03:19:13.962517569] (+0.000356478) cycles: { }, { ip = 0xFFFFFFFF811A75DB, tid = 20714, pid = 20714, period = 1325731 } [03:19:13.969518008] (+0.007000439) cycles: { }, { ip = 0x34080917B2, tid = 20714, pid = 20714, period = 1144298 } The following members to the ctf-environment were decided to be added to distinguish and specify perf CTF data: - domain It says "kernel" because it contains a kernel trace (not to be confused with a user space like lttng-ust does) - tracer_name It says perf. This can be used to distinguish between lttng and perf CTF based trace. - version The kernel version from stream. In addition to release, this is what it looks like on a Debian kernel: release = "3.14-1-amd64"; version = "3.14.0"; [1] http://projects.eclipse.org/projects/tools.tracecompass Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Reviewed-by: David Ahern <dsahern@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jeremie Galarneau <jgalar@efficios.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1424470628-5969-4-git-send-email-jolsa@kernel.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-21 06:17:00 +08:00
{ .name = "data-convert", .ptr = &debug_data_convert },
{ .name = NULL, }
};
int perf_debug_option(const char *str)
{
struct debug_variable *var = &debug_variables[0];
char *vstr, *s = strdup(str);
int v = 1;
vstr = strchr(s, '=');
if (vstr)
*vstr++ = 0;
while (var->name) {
if (!strcmp(s, var->name))
break;
var++;
}
if (!var->name) {
pr_err("Unknown debug variable name '%s'\n", s);
free(s);
return -1;
}
if (vstr) {
v = atoi(vstr);
/*
* Allow only values in range (0, 10),
* otherwise set 0.
*/
v = (v < 0) || (v > 10) ? 0 : v;
}
if (quiet)
v = -1;
*var->ptr = v;
free(s);
return 0;
}
int perf_quiet_option(void)
{
struct debug_variable *var = &debug_variables[0];
/* disable all debug messages */
while (var->name) {
*var->ptr = -1;
var++;
}
quiet = true;
return 0;
}
#define DEBUG_WRAPPER(__n, __l) \
static int pr_ ## __n ## _wrapper(const char *fmt, ...) \
{ \
va_list args; \
int ret; \
\
va_start(args, fmt); \
ret = veprintf(__l, verbose, fmt, args); \
va_end(args); \
return ret; \
}
DEBUG_WRAPPER(warning, 0);
DEBUG_WRAPPER(debug, 1);
void perf_debug_setup(void)
{
libapi_set_print(pr_warning_wrapper, pr_warning_wrapper, pr_debug_wrapper);
}
/* Obtain a backtrace and print it to stdout. */
#ifdef HAVE_BACKTRACE_SUPPORT
void dump_stack(void)
{
void *array[16];
size_t size = backtrace(array, ARRAY_SIZE(array));
char **strings = backtrace_symbols(array, size);
size_t i;
printf("Obtained %zd stack frames.\n", size);
for (i = 0; i < size; i++)
printf("%s\n", strings[i]);
free(strings);
}
#else
void dump_stack(void) {}
#endif
void sighandler_dump_stack(int sig)
{
psignal(sig, "perf");
dump_stack();
signal(sig, SIG_DFL);
raise(sig);
}