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author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-07-23 14:46:33 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-08-02 13:47:56 +0200 |
commit | 9f498cc5be7e013d8d6e4c616980ed0ffc8680d2 (patch) | |
tree | 25ef7a52d61ffd336c73b42dcf770424beb19cf3 /tools | |
parent | perf_counter: Collapse inherit on read() (diff) | |
download | linux-9f498cc5be7e013d8d6e4c616980ed0ffc8680d2.tar.xz linux-9f498cc5be7e013d8d6e4c616980ed0ffc8680d2.zip |
perf_counter: Full task tracing
In order to be able to distinguish between no samples due to
inactivity and no samples due to task ended, Arjan asked for
PERF_EVENT_EXIT events. This is useful to the boot delay
instrumentation (bootchart) app.
This patch changes the PERF_EVENT_FORK to be emitted on every
clone, and adds PERF_EVENT_EXIT to be emitted on task exit,
after the task's counters have been closed.
This task tracing is controlled through: attr.comm || attr.mmap
and through the new attr.task field.
Suggested-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
[ cleaned up perf_counter.h a bit ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions