public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-18 22:14:16 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

perf report: Add dump_read function

Browse source 
Adding dump_read function to gather all the dump output of read
function. Adding output of enabled and running times and id if enabled
(3 new lines with '...' prefix below).

  $ perf record -s ...
  $ perf report -D

  958358311769 0x91f8 [0x40]: PERF_RECORD_READ: 3339 3339 cycles:u 0
  ... time enabled : 958358313731
  ... time running : 958358313731
  ... id           : 80

Committer note:

Do not use 'read' as a variable name as it breaks the build on older
systems, such as RHEL6:

    CC       /tmp/build/perf/util/session.o
  cc1: warnings being treated as errors
  util/session.c: In function 'dump_read':
  util/session.c:1132: error: declaration of 'read' shadows a global declaration
  /usr/include/bits/unistd.h:35: error: shadowed declaration is here
  mv: cannot stat `/tmp/build/perf/util/.session.o.tmp': No such file or directory

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170824162737.7813-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2017-08-24 18:27:32 +02:00 • committed by Arnaldo Carvalho de Melo
parent a17f069787
commit dac7f6b7ed
2 changed files with 25 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
tools/perf/builtin-report.c
View file

@ -249,10 +249,6 @@ static int process_read_event(struct perf_tool *tool,
return err;
}
dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
evsel ? perf_evsel__name(evsel) : "FAIL",
event->read.value);
return 0;
}

25
tools/perf/util/session.c
View file

@ -1127,6 +1127,30 @@ static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
sample_read__printf(sample, evsel->attr.read_format);
}
static void dump_read(struct perf_evsel *evsel, union perf_event *event)
{
struct read_event *read_event = &event->read;
u64 read_format;
if (!dump_trace)
return;
printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
evsel ? perf_evsel__name(evsel) : "FAIL",
event->read.value);
read_format = evsel->attr.read_format;
if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
printf("... time enabled : %" PRIu64 "\n", read_event->time_enabled);
if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
printf("... time running : %" PRIu64 "\n", read_event->time_running);
if (read_format & PERF_FORMAT_ID)
printf("... id : %" PRIu64 "\n", read_event->id);
}
static struct machine *machines__find_for_cpumode(struct machines *machines,
union perf_event *event,
struct perf_sample *sample)
@ -1271,6 +1295,7 @@ static int machines__deliver_event(struct machines *machines,
evlist->stats.total_lost_samples += event->lost_samples.lost;
return tool->lost_samples(tool, event, sample, machine);
case PERF_RECORD_READ:
dump_read(evsel, event);
return tool->read(tool, event, sample, evsel, machine);
case PERF_RECORD_THROTTLE:
return tool->throttle(tool, event, sample, machine);