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| author |   Andi Kleen <ak@linux.intel.com> | 2019-03-05 06:47:53 -0800 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-03-11 11:56:02 -0300 |
| commit | f8c856cb2c947f4fad0a2dff5e95cdcddb801303 (patch) | |
| tree | 92940115a785364920289795783f92ce54f7faf1 /tools/perf/util | |
| parent | perf report: Support output in nanoseconds (diff) | |
| download | linux-dev-f8c856cb2c947f4fad0a2dff5e95cdcddb801303.tar.xz linux-dev-f8c856cb2c947f4fad0a2dff5e95cdcddb801303.zip | |
perf time-utils: Add utility function to print time stamps in nanoseconds
Add a utility function to print nanosecond timestamps.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20190305144758.12397-11-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/time-utils.c | 8 | ||||
| -rw-r--r-- | tools/perf/util/time-utils.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/tools/perf/util/time-utils.c b/tools/perf/util/time-utils.c index 0f53baec660e..20663a460df3 100644 --- a/tools/perf/util/time-utils.c +++ b/tools/perf/util/time-utils.c @@ -453,6 +453,14 @@ int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz) return scnprintf(buf, sz, "%"PRIu64".%06"PRIu64, sec, usec); } +int timestamp__scnprintf_nsec(u64 timestamp, char *buf, size_t sz) +{ + u64 sec = timestamp / NSEC_PER_SEC, + nsec = timestamp % NSEC_PER_SEC; + + return scnprintf(buf, sz, "%" PRIu64 ".%09" PRIu64, sec, nsec); +} + int fetch_current_timestamp(char *buf, size_t sz) { struct timeval tv; diff --git a/tools/perf/util/time-utils.h b/tools/perf/util/time-utils.h index b923de44e36f..72a42ea1d513 100644 --- a/tools/perf/util/time-utils.h +++ b/tools/perf/util/time-utils.h @@ -30,6 +30,7 @@ int perf_time__parse_for_ranges(const char *str, struct perf_session *session, int *range_size, int *range_num); int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz); +int timestamp__scnprintf_nsec(u64 timestamp, char *buf, size_t sz); int fetch_current_timestamp(char *buf, size_t sz); |