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| author | Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> | 2008-05-12 21:21:10 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-23 22:29:25 +0200 |
| commit | 5b82a1b08a00b2adca3d9dd9777efff40b7aaaa1 (patch) | |
| tree | 4dcce4af592ca177bee3dfeb34f9b482d142e713 /kernel/sched.c | |
| parent | 0aa977f592f17004f9d1d545f2e1bb9ea71896c3 (diff) | |
| download | lwn-5b82a1b08a00b2adca3d9dd9777efff40b7aaaa1.tar.gz lwn-5b82a1b08a00b2adca3d9dd9777efff40b7aaaa1.zip | |
Port ftrace to markers
Porting ftrace to the marker infrastructure.
Don't need to chain to the wakeup tracer from the sched tracer, because markers
support multiple probes connected.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index ad95cca4e42e..e2e985eeee78 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -2500,7 +2500,9 @@ out_activate: success = 1; out_running: - ftrace_wake_up_task(rq, p, rq->curr); + trace_mark(kernel_sched_wakeup, + "pid %d state %ld ## rq %p task %p rq->curr %p", + p->pid, p->state, rq, p, rq->curr); check_preempt_curr(rq, p); p->state = TASK_RUNNING; @@ -2631,7 +2633,9 @@ void wake_up_new_task(struct task_struct *p, unsigned long clone_flags) p->sched_class->task_new(rq, p); inc_nr_running(rq); } - ftrace_wake_up_task(rq, p, rq->curr); + trace_mark(kernel_sched_wakeup_new, + "pid %d state %ld ## rq %p task %p rq->curr %p", + p->pid, p->state, rq, p, rq->curr); check_preempt_curr(rq, p); #ifdef CONFIG_SMP if (p->sched_class->task_wake_up) @@ -2804,7 +2808,11 @@ context_switch(struct rq *rq, struct task_struct *prev, struct mm_struct *mm, *oldmm; prepare_task_switch(rq, prev, next); - ftrace_ctx_switch(rq, prev, next); + trace_mark(kernel_sched_schedule, + "prev_pid %d next_pid %d prev_state %ld " + "## rq %p prev %p next %p", + prev->pid, next->pid, prev->state, + rq, prev, next); mm = next->mm; oldmm = prev->active_mm; /* |