diff options
author | Jin Yao <yao.jin@linux.intel.com> | 2017-12-08 21:13:43 +0800 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-08 11:39:09 -0300 |
commit | 13a70f350665580708ab11f725d3578eaacbf2d0 (patch) | |
tree | 028ed4503bee5310fe88cf54134e869efb8fe0bb /tools/perf/util/time-utils.h | |
parent | 68588baf8d01826673f2874f434123029e519052 (diff) | |
download | linux-stable-13a70f350665580708ab11f725d3578eaacbf2d0.tar.gz linux-stable-13a70f350665580708ab11f725d3578eaacbf2d0.tar.bz2 linux-stable-13a70f350665580708ab11f725d3578eaacbf2d0.zip |
perf tools: Create function to parse time percent
Current perf report/script/... have a --time option to limit the time
range of output. But right now it only supports absolute time, add
support for time percentage.
For example:
1. Select the second 10% time slice
perf report --time 10%/2
2. Select from 0% to 10% time slice
perf report --time 0%-10%
It also support the multiple time ranges.
3. Select the first and second 10% time slices
perf report --time 10%/1,10%/2
4. Select from 0% to 10% and 30% to 40% slices
perf report --time 0%-10%,30%-40%
Changelog:
v4: An issue is found. Following passes.
perf script --time 10%/10x12321xsdfdasfdsafdsafdsa
Now it uses strtol to replace atoi.
Committer notes:
This just puts in place the infrastructure, so the examples in this cset
comment will only work later, after more patches in this series are
applied.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512738826-2628-4-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/time-utils.h')
-rw-r--r-- | tools/perf/util/time-utils.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/time-utils.h b/tools/perf/util/time-utils.h index 15b475c50ccf..23087231785a 100644 --- a/tools/perf/util/time-utils.h +++ b/tools/perf/util/time-utils.h @@ -13,6 +13,9 @@ int parse_nsec_time(const char *str, u64 *ptime); int perf_time__parse_str(struct perf_time_interval *ptime, const char *ostr); +int perf_time__percent_parse_str(struct perf_time_interval *ptime_buf, int num, + const char *ostr, u64 start, u64 end); + bool perf_time__skip_sample(struct perf_time_interval *ptime, u64 timestamp); int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz); |