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| author | Adrian Hunter <adrian.hunter@intel.com> | 2014-07-14 14:02:57 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-07-17 00:57:37 +0400 |
| commit | 2afd2bcfc3a026d6e4c2184bf41ccd74eb05758b (patch) | |
| tree | 6bc8b7c959c016d9924d27aed48f05471e976e82 /tools | |
| parent | 6ff1ce763921f605aaf98c7a828b7df24d6923dc (diff) | |
| download | linux-2afd2bcfc3a026d6e4c2184bf41ccd74eb05758b.tar.xz | |
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 <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/1405332185-4050-34-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -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; |