diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2010-09-20 21:13:34 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-09-21 16:56:41 +0200 |
| commit | a8027073eb127cd207070891374b5c54c2ce3d23 (patch) | |
| tree | 27f5dc8effe3b5636d4bab9c890a40aa20fa44e6 /include/trace/events/sched.h | |
| parent | sched: Give CPU bound RT tasks preference (diff) | |
| download | linux-a8027073eb127cd207070891374b5c54c2ce3d23.tar.xz linux-a8027073eb127cd207070891374b5c54c2ce3d23.zip | |
tracing/sched: Add sched_pi_setprio tracepoint
Add a tracepoint that shows the priority of a task being boosted
via priority inheritance.
Cc: Gregory Haskins <ghaskins@novell.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/trace/events/sched.h')
| -rw-r--r-- | include/trace/events/sched.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index 9208c92aeab5..f6334782a593 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -362,6 +362,35 @@ TRACE_EVENT(sched_stat_runtime, (unsigned long long)__entry->vruntime) ); +/* + * Tracepoint for showing priority inheritance modifying a tasks + * priority. + */ +TRACE_EVENT(sched_pi_setprio, + + TP_PROTO(struct task_struct *tsk, int newprio), + + TP_ARGS(tsk, newprio), + + TP_STRUCT__entry( + __array( char, comm, TASK_COMM_LEN ) + __field( pid_t, pid ) + __field( int, oldprio ) + __field( int, newprio ) + ), + + TP_fast_assign( + memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); + __entry->pid = tsk->pid; + __entry->oldprio = tsk->prio; + __entry->newprio = newprio; + ), + + TP_printk("comm=%s pid=%d oldprio=%d newprio=%d", + __entry->comm, __entry->pid, + __entry->oldprio, __entry->newprio) +); + #endif /* _TRACE_SCHED_H */ /* This part must be outside protection */ |