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perf record: Support per-event freq term

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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>
This commit is contained in:
Namhyung Kim
2015-08-09 15:45:23 +09:00
committed by Arnaldo Carvalho de Melo
parent 31191a85fb
commit 09af2a5535
7 changed files with 16 additions and 1 deletions
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4
tools/perf/util/evsel.c
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@@ -600,6 +600,10 @@ static void apply_config_terms(struct perf_evsel *evsel)
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);