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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-07-23 16:52:41 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-08-02 13:47:57 +0200 |
| commit | 27d028de64bd7e1f8e72bdeae6b0586939574fcb (patch) | |
| tree | 22fe9275510cc491d8adf6790979fef6284346bd /tools | |
| parent | perf_counter: Full task tracing (diff) | |
| download | linux-27d028de64bd7e1f8e72bdeae6b0586939574fcb.tar.xz linux-27d028de64bd7e1f8e72bdeae6b0586939574fcb.zip | |
perf report: Update for the new FORK/EXIT events
Since FORK is now also issued for threads, detect those by
comparing the parent and child PID.
Teach it about EXIT events and ignore them.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-report.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index b20a4b6e31b7..95fd06cdaa99 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -99,6 +99,7 @@ struct comm_event { struct fork_event { struct perf_event_header header; u32 pid, ppid; + u32 tid, ptid; }; struct lost_event { @@ -1608,15 +1609,27 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head) } static int -process_fork_event(event_t *event, unsigned long offset, unsigned long head) +process_task_event(event_t *event, unsigned long offset, unsigned long head) { struct thread *thread = threads__findnew(event->fork.pid); struct thread *parent = threads__findnew(event->fork.ppid); - dprintf("%p [%p]: PERF_EVENT_FORK: %d:%d\n", + dprintf("%p [%p]: PERF_EVENT_%s: (%d:%d):(%d:%d)\n", (void *)(offset + head), (void *)(long)(event->header.size), - event->fork.pid, event->fork.ppid); + event->header.type == PERF_EVENT_FORK ? "FORK" : "EXIT", + event->fork.pid, event->fork.tid, + event->fork.ppid, event->fork.ptid); + + /* + * A thread clone will have the same PID for both + * parent and child. + */ + if (thread == parent) + return 0; + + if (event->header.type == PERF_EVENT_EXIT) + return 0; if (!thread || !parent || thread__fork(thread, parent)) { dprintf("problem processing PERF_EVENT_FORK, skipping event.\n"); @@ -1706,7 +1719,8 @@ process_event(event_t *event, unsigned long offset, unsigned long head) return process_comm_event(event, offset, head); case PERF_EVENT_FORK: - return process_fork_event(event, offset, head); + case PERF_EVENT_EXIT: + return process_task_event(event, offset, head); case PERF_EVENT_LOST: return process_lost_event(event, offset, head); |