lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

perf record: Support recording running/enabled time

Browse Source 
Add an option to perf record to record running/enabled time for read
events, similar to what stat does.

This is useful to understand multiplexing problems.

Right now the report support is not great, but at least report -D
already supports it.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1424819620-16043-1-git-send-email-andi@firstfloor.org
[ Fixed the Documentation entry to match the OPT_BOOLEAN one ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Andi Kleen
2015-02-24 15:13:40 -08:00
committed by Arnaldo Carvalho de Melo
parent 506740654d
commit 85c273d2b6
4 changed files with 12 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
tools/perf/util/evsel.c
View File

@@ -734,6 +734,12 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
if (opts->sample_transaction)
perf_evsel__set_sample_bit(evsel, TRANSACTION);
if (opts->running_time) {
evsel->attr.read_format |=
PERF_FORMAT_TOTAL_TIME_ENABLED |
PERF_FORMAT_TOTAL_TIME_RUNNING;
}
/*
* XXX see the function comment above
*