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| author | Jiri Olsa <jolsa@kernel.org> | 2015-11-25 16:36:54 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-11-26 16:52:28 -0300 |
| commit | 6acd8e9271cdeaec458fd4eec4a6765d16e0e61c (patch) | |
| tree | a5c42a3ef94c482e33460036fda0df4c6fa7016b /tools/perf/builtin-stat.c | |
| parent | f55ae9540d16a355e61cb57b035aab9e1ae2da28 (diff) | |
| download | talos-obmc-linux-6acd8e9271cdeaec458fd4eec4a6765d16e0e61c.tar.gz talos-obmc-linux-6acd8e9271cdeaec458fd4eec4a6765d16e0e61c.zip | |
perf stat: Clear sample_(type|period) for counting
Clear sample_(type|period) for counting, as it only confuses debug
output with unwanted sampling details:
Before:
$ sudo perf stat -e 'raw_syscalls:sys_enter' -vv ls
------------------------------------------------------------
perf_event_attr:
type 2
size 112
config 0x11
{ sample_period, sample_freq } 1
sample_type TIME|CPU|PERIOD|RAW
read_format TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
disabled 1
inherit 1
enable_on_exec 1
exclude_guest 1
...
After:
$ sudo perf stat -e 'raw_syscalls:sys_enter' -vv ls
------------------------------------------------------------
perf_event_attr:
type 2
size 112
config 0x11
read_format TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
disabled 1
inherit 1
enable_on_exec 1
exclude_guest 1
...
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1448465815-27404-1-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-stat.c')
| -rw-r--r-- | tools/perf/builtin-stat.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index e77880b5094d..df2fbf046ee2 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -161,6 +161,13 @@ static int create_perf_stat_counter(struct perf_evsel *evsel) attr->inherit = !no_inherit; + /* + * Some events get initialized with sample_(period/type) set, + * like tracepoints. Clear it up for counting. + */ + attr->sample_period = 0; + attr->sample_type = 0; + if (target__has_cpu(&target)) return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel)); |
