| [PATCH 3/6] perf: add ability to record event period [message #44436] |
Wed, 07 December 2011 13:55  |
Andrey Vagin
Messages: 9
Registered: December 2011
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Junior Member |
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Signed-off-by: Andrew Vagin <avagin@openvz.org>
---
tools/perf/builtin-record.c | 1 +
tools/perf/perf.h | 1 +
tools/perf/util/evsel.c | 3 +++
3 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 766fa0a..f8fd14f 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -700,6 +700,7 @@ const struct option record_options[] = {
OPT_BOOLEAN('d', "data", &record.opts.sample_address,
"Sample addresses"),
OPT_BOOLEAN('T', "timestamp", &record.opts.sample_time, "Sample timestamps"),
+ OPT_BOOLEAN('P', "period", &record.opts.period, "Sample period"),
OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples,
"don't sample"),
OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache,
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index ea804f5..64f8bee 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -200,6 +200,7 @@ struct perf_record_opts {
bool sample_time;
bool sample_id_all_avail;
bool system_wide;
+ bool period;
unsigned int freq;
unsigned int mmap_pages;
unsigned int user_freq;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index e2d1b22..8550018 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -108,6 +108,9 @@ void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts)
if (opts->system_wide)
attr->sample_type |= PERF_SAMPLE_CPU;
+ if (opts->period)
+ attr->sample_type |= PERF_SAMPLE_PERIOD;
+
if (opts->sample_id_all_avail &&
(opts->sample_time || opts->system_wide ||
!opts->no_inherit || opts->cpu_list))
--
1.7.1
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