![Jiri Olsa](/assets/img/avatar_default.png)
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>
190 lines
3.5 KiB
C
190 lines
3.5 KiB
C
/* For general debugging purposes */
|
|
|
|
#include "../perf.h"
|
|
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
|
|
#include "cache.h"
|
|
#include "color.h"
|
|
#include "event.h"
|
|
#include "debug.h"
|
|
#include "util.h"
|
|
#include "target.h"
|
|
|
|
#define NSECS_PER_SEC 1000000000ULL
|
|
#define NSECS_PER_USEC 1000ULL
|
|
|
|
int verbose;
|
|
bool dump_trace = false, quiet = false;
|
|
int debug_ordered_events;
|
|
static int redirect_to_stderr;
|
|
int debug_data_convert;
|
|
|
|
static int _eprintf(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);
|
|
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 = _eprintf(level, var, fmt, args);
|
|
va_end(args);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __eprintf_time(u64 t, const char *fmt, va_list args)
|
|
{
|
|
int ret = 0;
|
|
u64 secs, usecs, nsecs = t;
|
|
|
|
secs = nsecs / NSECS_PER_SEC;
|
|
nsecs -= secs * NSECS_PER_SEC;
|
|
usecs = nsecs / NSECS_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 = __eprintf_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);
|
|
_eprintf(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;
|
|
}
|
|
|
|
void trace_event(union perf_event *event)
|
|
{
|
|
unsigned char *raw_event = (void *)event;
|
|
const char *color = PERF_COLOR_BLUE;
|
|
int i, j;
|
|
|
|
if (!dump_trace)
|
|
return;
|
|
|
|
printf(".");
|
|
color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n",
|
|
event->header.size);
|
|
|
|
for (i = 0; i < event->header.size; i++) {
|
|
if ((i & 15) == 0) {
|
|
printf(".");
|
|
color_fprintf(stdout, color, " %04x: ", i);
|
|
}
|
|
|
|
color_fprintf(stdout, color, " %02x", raw_event[i]);
|
|
|
|
if (((i & 15) == 15) || i == event->header.size-1) {
|
|
color_fprintf(stdout, color, " ");
|
|
for (j = 0; j < 15-(i & 15); j++)
|
|
color_fprintf(stdout, color, " ");
|
|
for (j = i & ~15; j <= i; j++) {
|
|
color_fprintf(stdout, color, "%c",
|
|
isprint(raw_event[j]) ?
|
|
raw_event[j] : '.');
|
|
}
|
|
color_fprintf(stdout, color, "\n");
|
|
}
|
|
}
|
|
printf(".\n");
|
|
}
|
|
|
|
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},
|
|
{ .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;
|
|
}
|
|
|
|
*var->ptr = v;
|
|
free(s);
|
|
return 0;
|
|
}
|