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authorIngo Molnar <mingo@elte.hu>2008-05-12 15:20:52 -0400
committerThomas Gleixner <tglx@linutronix.de>2008-05-23 15:04:44 -0400
commit4e65551905fb0300ae7e667cbaa41ee2e3f29a13 (patch)
tree0e642c311e31043eecf86c218128c40e1ddac782 /kernel/sched.c
parent4c1f4d4f0175129934d5dbc19a39296430937a05 (diff)
ftrace: sched tracer, trace full rbtree
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.c35
1 files changed, 32 insertions, 3 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 53ab1174664f..b9208a0e33a0 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2394,6 +2394,35 @@ static int sched_balance_self(int cpu, int flag)
2394 2394
2395#endif /* CONFIG_SMP */ 2395#endif /* CONFIG_SMP */
2396 2396
2397#ifdef CONFIG_CONTEXT_SWITCH_TRACER
2398
2399void ftrace_all_fair_tasks(void *__rq, void *__tr, void *__data)
2400{
2401 struct sched_entity *se;
2402 struct task_struct *p;
2403 struct rb_node *curr;
2404 struct rq *rq = __rq;
2405
2406 curr = first_fair(&rq->cfs);
2407 if (!curr)
2408 return;
2409
2410 while (curr) {
2411 se = rb_entry(curr, struct sched_entity, run_node);
2412 if (!entity_is_task(se))
2413 continue;
2414
2415 p = task_of(se);
2416
2417 __trace_special(__tr, __data,
2418 p->pid, p->se.vruntime, p->se.sum_exec_runtime);
2419
2420 curr = rb_next(curr);
2421 }
2422}
2423
2424#endif
2425
2397/*** 2426/***
2398 * try_to_wake_up - wake up a thread 2427 * try_to_wake_up - wake up a thread
2399 * @p: the to-be-woken-up thread 2428 * @p: the to-be-woken-up thread
@@ -2468,7 +2497,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync)
2468 2497
2469out_activate: 2498out_activate:
2470#endif /* CONFIG_SMP */ 2499#endif /* CONFIG_SMP */
2471 ftrace_wake_up_task(p, rq->curr); 2500 ftrace_wake_up_task(rq, p, rq->curr);
2472 schedstat_inc(p, se.nr_wakeups); 2501 schedstat_inc(p, se.nr_wakeups);
2473 if (sync) 2502 if (sync)
2474 schedstat_inc(p, se.nr_wakeups_sync); 2503 schedstat_inc(p, se.nr_wakeups_sync);
@@ -2613,7 +2642,7 @@ void wake_up_new_task(struct task_struct *p, unsigned long clone_flags)
2613 p->sched_class->task_new(rq, p); 2642 p->sched_class->task_new(rq, p);
2614 inc_nr_running(rq); 2643 inc_nr_running(rq);
2615 } 2644 }
2616 ftrace_wake_up_task(p, rq->curr); 2645 ftrace_wake_up_task(rq, p, rq->curr);
2617 check_preempt_curr(rq, p); 2646 check_preempt_curr(rq, p);
2618#ifdef CONFIG_SMP 2647#ifdef CONFIG_SMP
2619 if (p->sched_class->task_wake_up) 2648 if (p->sched_class->task_wake_up)
@@ -2786,7 +2815,7 @@ context_switch(struct rq *rq, struct task_struct *prev,
2786 struct mm_struct *mm, *oldmm; 2815 struct mm_struct *mm, *oldmm;
2787 2816
2788 prepare_task_switch(rq, prev, next); 2817 prepare_task_switch(rq, prev, next);
2789 ftrace_ctx_switch(prev, next); 2818 ftrace_ctx_switch(rq, prev, next);
2790 mm = next->mm; 2819 mm = next->mm;
2791 oldmm = prev->active_mm; 2820 oldmm = prev->active_mm;
2792 /* 2821 /*