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| author | Adrian Hunter <adrian.hunter@intel.com> | 2014-07-14 13:02:56 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-07-16 17:57:36 -0300 |
| commit | 6ff1ce763921f605aaf98c7a828b7df24d6923dc (patch) | |
| tree | 3b40b23fe75578081608688a291658b3f16c8440 /tools/perf | |
| parent | ea8e08a16a1e6566be3f775c0bd351fa52ab6b9d (diff) | |
| download | linux-6ff1ce763921f605aaf98c7a828b7df24d6923dc.tar.gz linux-6ff1ce763921f605aaf98c7a828b7df24d6923dc.tar.bz2 linux-6ff1ce763921f605aaf98c7a828b7df24d6923dc.zip | |
perf evsel: Add 'no_aux_samples' option
Add an option to prevent additional samples being added to a selected
event by perf_evsel__config().
This is needed when using the sched_switch tracepoint to follow object
code execution. Since sched_switch will be used only for switch
information, additional sampling is wasteful.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1405332185-4050-33-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/evsel.c | 6 | ||||
| -rw-r--r-- | tools/perf/util/evsel.h | 1 |
2 files changed, 4 insertions, 3 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index b760d32aae06..40626e5fc1c0 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -623,7 +623,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) attr->mmap_data = track; } - if (opts->call_graph_enabled) + if (opts->call_graph_enabled && !evsel->no_aux_samples) perf_evsel__config_callgraph(evsel, opts); if (target__has_cpu(&opts->target)) @@ -637,7 +637,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) target__has_cpu(&opts->target) || per_cpu)) perf_evsel__set_sample_bit(evsel, TIME); - if (opts->raw_samples) { + if (opts->raw_samples && !evsel->no_aux_samples) { perf_evsel__set_sample_bit(evsel, TIME); perf_evsel__set_sample_bit(evsel, RAW); perf_evsel__set_sample_bit(evsel, CPU); @@ -650,7 +650,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) attr->watermark = 0; attr->wakeup_events = 1; } - if (opts->branch_stack) { + if (opts->branch_stack && !evsel->no_aux_samples) { perf_evsel__set_sample_bit(evsel, BRANCH_STACK); attr->branch_sample_type = opts->branch_stack; } diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index a52e9a5bb2d0..8dfec05bcec2 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -83,6 +83,7 @@ struct perf_evsel { int is_pos; bool supported; bool needs_swap; + bool no_aux_samples; /* parse modifier helper */ int exclude_GH; int nr_members; |