diff options
| author | Adrian Hunter <[email protected]> | 2014-07-14 13:02:57 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2014-07-16 17:57:37 -0300 |
| commit | 2afd2bcfc3a026d6e4c2184bf41ccd74eb05758b (patch) | |
| tree | 6bc8b7c959c016d9924d27aed48f05471e976e82 | |
| parent | 6ff1ce763921f605aaf98c7a828b7df24d6923dc (diff) | |
perf evsel: Add 'immediate' option
Add an option to cause a selected event to be enabled immediately when
configured by perf_evsel__config().
This is needed when using the sched_switch tracepoint to follow object
code execution. By having sched_switch enabled immediately the first
sched_switch event precedes the start of other tracing.
Signed-off-by: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -rw-r--r-- | tools/perf/util/evsel.c | 5 | ||||
| -rw-r--r-- | tools/perf/util/evsel.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 40626e5fc1c0..90f58cdd0fb0 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -681,6 +681,11 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) if (target__none(&opts->target) && perf_evsel__is_group_leader(evsel) && !opts->initial_delay) attr->enable_on_exec = 1; + + if (evsel->immediate) { + attr->disabled = 0; + attr->enable_on_exec = 0; + } } int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 8dfec05bcec2..d7f93ce0ebc1 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -84,6 +84,7 @@ struct perf_evsel { bool supported; bool needs_swap; bool no_aux_samples; + bool immediate; /* parse modifier helper */ int exclude_GH; int nr_members; |