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| author | Arjan van de Ven <arjan@linux.intel.com> | 2009-09-12 07:52:47 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-19 11:42:10 +0200 |
| commit | 393b2ad8c757ba3ccd2a99ca5bbcd6db4d3fa53d (patch) | |
| tree | 8972e2e9647c814e71be74d37adb85b18e9c6732 /include/linux/perf_counter.h | |
| parent | 929bf0d0156562ce631728b6fa53d68004d456d2 (diff) | |
| download | lwn-393b2ad8c757ba3ccd2a99ca5bbcd6db4d3fa53d.tar.gz lwn-393b2ad8c757ba3ccd2a99ca5bbcd6db4d3fa53d.zip | |
perf: Add a timestamp to fork events
perf timechart needs to know when a process forked, in order to be
able to visualize properly when tasks start.
This patch adds a time field to the event structure, and fills it
in appropriately.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090912130341.51ad2de2@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/perf_counter.h')
| -rw-r--r-- | include/linux/perf_counter.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index c7375f97aa19..bd341007c4fc 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -336,6 +336,7 @@ enum perf_event_type { * struct perf_event_header header; * u32 pid, ppid; * u32 tid, ptid; + * u64 time; * }; */ PERF_EVENT_EXIT = 4, @@ -356,6 +357,7 @@ enum perf_event_type { * struct perf_event_header header; * u32 pid, ppid; * u32 tid, ptid; + * { u64 time; } && PERF_SAMPLE_TIME * }; */ PERF_EVENT_FORK = 7, |