perf record: Support per-event freq term
Now perf can set per-event value of time and (sampling) period. But I
guess most users like me just want to set frequency rather than period.
So add the 'freq' term in the event parser.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1439102724-14079-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index a59710f..f664a22 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -600,6 +600,10 @@
attr->sample_period = term->val.period;
attr->freq = 0;
break;
+ case PERF_EVSEL__CONFIG_TERM_FREQ:
+ attr->sample_freq = term->val.freq;
+ attr->freq = 1;
+ break;
case PERF_EVSEL__CONFIG_TERM_TIME:
if (term->val.time)
perf_evsel__set_sample_bit(evsel, TIME);
