diff options
| author | Andi Kleen <ak@linux.intel.com> | 2015-02-24 18:13:40 -0500 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-02-25 10:42:23 -0500 |
| commit | 85c273d2b6569706762cf400079ca0699e007d81 (patch) | |
| tree | ff85ad53d0f7ea05d8bea1aa685d7df33ad1f6ac /tools | |
| parent | 506740654db4fa5b6e1229147cee3cf8c7e07eca (diff) | |
perf record: Support recording running/enabled time
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>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 3 | ||||
| -rw-r--r-- | tools/perf/builtin-record.c | 2 | ||||
| -rw-r--r-- | tools/perf/perf.h | 1 | ||||
| -rw-r--r-- | tools/perf/util/evsel.c | 6 |
4 files changed, 12 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 1c7e50f62b1f..cae75c11120f 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt | |||
| @@ -241,6 +241,9 @@ Capture machine state (registers) at interrupt, i.e., on counter overflows for | |||
| 241 | each sample. List of captured registers depends on the architecture. This option | 241 | each sample. List of captured registers depends on the architecture. This option |
| 242 | is off by default. | 242 | is off by default. |
| 243 | 243 | ||
| 244 | --running-time:: | ||
| 245 | Record running and enabled time for read events (:S) | ||
| 246 | |||
| 244 | SEE ALSO | 247 | SEE ALSO |
| 245 | -------- | 248 | -------- |
| 246 | linkperf:perf-stat[1], linkperf:perf-list[1] | 249 | linkperf:perf-stat[1], linkperf:perf-list[1] |
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index d0d02a811ecd..4fdad06d37db 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c | |||
| @@ -839,6 +839,8 @@ struct option __record_options[] = { | |||
| 839 | "use per-thread mmaps"), | 839 | "use per-thread mmaps"), |
| 840 | OPT_BOOLEAN('I', "intr-regs", &record.opts.sample_intr_regs, | 840 | OPT_BOOLEAN('I', "intr-regs", &record.opts.sample_intr_regs, |
| 841 | "Sample machine registers on interrupt"), | 841 | "Sample machine registers on interrupt"), |
| 842 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, | ||
| 843 | "Record running/enabled time of read (:S) events"), | ||
| 842 | OPT_END() | 844 | OPT_END() |
| 843 | }; | 845 | }; |
| 844 | 846 | ||
diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 1dabb8553499..1caa70a4a9e1 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h | |||
| @@ -53,6 +53,7 @@ struct record_opts { | |||
| 53 | bool sample_time; | 53 | bool sample_time; |
| 54 | bool period; | 54 | bool period; |
| 55 | bool sample_intr_regs; | 55 | bool sample_intr_regs; |
| 56 | bool running_time; | ||
| 56 | unsigned int freq; | 57 | unsigned int freq; |
| 57 | unsigned int mmap_pages; | 58 | unsigned int mmap_pages; |
| 58 | unsigned int user_freq; | 59 | unsigned int user_freq; |
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index f93e5208c762..bb4eff28869e 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c | |||
| @@ -734,6 +734,12 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) | |||
| 734 | if (opts->sample_transaction) | 734 | if (opts->sample_transaction) |
| 735 | perf_evsel__set_sample_bit(evsel, TRANSACTION); | 735 | perf_evsel__set_sample_bit(evsel, TRANSACTION); |
| 736 | 736 | ||
| 737 | if (opts->running_time) { | ||
| 738 | evsel->attr.read_format |= | ||
| 739 | PERF_FORMAT_TOTAL_TIME_ENABLED | | ||
| 740 | PERF_FORMAT_TOTAL_TIME_RUNNING; | ||
| 741 | } | ||
| 742 | |||
| 737 | /* | 743 | /* |
| 738 | * XXX see the function comment above | 744 | * XXX see the function comment above |
| 739 | * | 745 | * |