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| author | Jiri Olsa <jolsa@kernel.org> | 2017-08-03 13:10:28 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-11-16 14:50:09 -0300 |
| commit | 014681208ea0d1a7e5ea2f014242e7d196d04c34 (patch) | |
| tree | 0ada746c3fb3579d5b2fe2abde4556ea2f8b39ab /tools/perf/util/evlist.c | |
| parent | 3ad31d8a0df257c3f18c989119359c1f25cd009d (diff) | |
| download | lwn-014681208ea0d1a7e5ea2f014242e7d196d04c34.tar.gz lwn-014681208ea0d1a7e5ea2f014242e7d196d04c34.zip | |
perf evlist: Add perf_evlist__parse_sample_timestamp function
Add perf_evlist__parse_sample_timestamp to retrieve the timestamp of the
sample.
The idea is to use this function instead of the full sample parsing
before we queue the sample. At that time only the timestamp is needed
and we parse the sample once again later on delivery.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-o7syqo8lipj4or7renpu8e8y@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index b62e523a7035..199bb82efbcd 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1582,6 +1582,17 @@ int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *even return perf_evsel__parse_sample(evsel, event, sample); } +int perf_evlist__parse_sample_timestamp(struct perf_evlist *evlist, + union perf_event *event, + u64 *timestamp) +{ + struct perf_evsel *evsel = perf_evlist__event2evsel(evlist, event); + + if (!evsel) + return -EFAULT; + return perf_evsel__parse_sample_timestamp(evsel, event, timestamp); +} + size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp) { struct perf_evsel *evsel; |