Messages in this thread Patch in this message |  | | | Date | Tue, 16 Nov 2010 19:54:02 -0500 | | From | Steven Rostedt <> | | Subject | [RFC][PATCH 5/5] [PATCH 5/5] tracing/events: Add sched_migrate_task stable event |
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From: Steven Rostedt <srostedt@redhat.com>
Add the stable event for sched_migrate_task.
[root@bxf ~]# cat /sys/kernel/event/sched_migrate_task/format array:comm type:char size:8 count:16 align:1 signed:1; field:pid type:pid_t size:32 align:4 signed:1; field:orig_cpu type:int size:32 align:4 signed:1; field:dest_cpu type:int size:32 align:4 signed:1;
Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- include/trace/stable/sched.h | 13 +++++++++++++ kernel/events/events.c | 10 ++++++++++ 2 files changed, 23 insertions(+), 0 deletions(-) diff --git a/include/trace/stable/sched.h b/include/trace/stable/sched.h index b5f4fd7..55d0e6f 100644 --- a/include/trace/stable/sched.h +++ b/include/trace/stable/sched.h @@ -17,4 +17,17 @@ STABLE_EVENT(sched_switch, ) ); +/* + * Tracepoint for a task being migrated: + */ +STABLE_EVENT(sched_migrate_task, + + EVENT_STRUCT( + __array( char, comm, TASK_COMM_LEN )__SEP__ + __field( pid_t, pid )__SEP__ + __field( int, orig_cpu )__SEP__ + __field( int, dest_cpu ) + ) +); + #endif /* _STABLE_SCHED_H */ diff --git a/kernel/events/events.c b/kernel/events/events.c index f69e720..6ca2d2d 100644 --- a/kernel/events/events.c +++ b/kernel/events/events.c @@ -35,4 +35,14 @@ static void hook_sched_switch(void *ignore, next->comm, next->pid); } +DECLARE_TRACE(stable_sched_migrate_task, + TP_PROTO(char *comm, pid_t pid, int orig_cpu, int dest_cpu), + TP_ARGS(comm, pid, orig_cpu, dest_cpu)); +DEFINE_TRACE(stable_sched_migrate_task); + +static void hook_sched_migrate_task(void *ignore, struct task_struct *p, int dest_cpu) +{ + trace_stable_sched_migrate_task(p->comm, p->pid, task_cpu(p), dest_cpu); +} + #include "event_reg.h" -- 1.7.1
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