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ftrace: remove add-hoc code

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Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar 2008-05-12 21:20:54 +02:00 committed by Thomas Gleixner
parent d05cdb25d8
commit 4d9493c90f
3 changed files with 2 additions and 58 deletions
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47
kernel/sched.c
View File

@ -2412,53 +2412,6 @@ static int sched_balance_self(int cpu, int flag)
#endif /* CONFIG_SMP */
#ifdef CONFIG_CONTEXT_SWITCH_TRACER
void ftrace_task(struct task_struct *p, void *__tr, void *__data)
{
#if 0
/*
* trace timeline tree
*/
__trace_special(__tr, __data,
p->pid, p->se.vruntime, p->se.sum_exec_runtime);
#else
/*
* trace balance metrics
*/
__trace_special(__tr, __data,
p->pid, p->se.avg_overlap, 0);
#endif
}
void ftrace_all_fair_tasks(void *__rq, void *__tr, void *__data)
{
struct task_struct *p;
struct sched_entity *se;
struct rb_node *curr;
struct rq *rq = __rq;
if (rq->cfs.curr) {
p = task_of(rq->cfs.curr);
ftrace_task(p, __tr, __data);
}
if (rq->cfs.next) {
p = task_of(rq->cfs.next);
ftrace_task(p, __tr, __data);
}
for (curr = first_fair(&rq->cfs); curr; curr = rb_next(curr)) {
se = rb_entry(curr, struct sched_entity, run_node);
if (!entity_is_task(se))
continue;
p = task_of(se);
ftrace_task(p, __tr, __data);
}
}
#endif
/***
* try_to_wake_up - wake up a thread
* @p: the to-be-woken-up thread

3
kernel/sched_fair.c
View File

@ -1061,8 +1061,6 @@ wake_affine(struct rq *rq, struct sched_domain *this_sd, struct rq *this_rq,
if (!(this_sd->flags & SD_WAKE_AFFINE))
return 0;
ftrace_special(__LINE__, curr->se.avg_overlap, sync);
ftrace_special(__LINE__, p->se.avg_overlap, -1);
/*
* If the currently running task will sleep within
* a reasonable amount of time then attract this newly
@ -1240,7 +1238,6 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p)
if (unlikely(se == pse))
return;
ftrace_special(__LINE__, p->pid, se->last_wakeup);
cfs_rq_of(pse)->next = pse;
/*

10
kernel/trace/trace_sched_switch.c
View File

@ -36,11 +36,8 @@ ctx_switch_func(void *__rq, struct task_struct *prev, struct task_struct *next)
data = tr->data[cpu];
disabled = atomic_inc_return(&data->disabled);
if (likely(disabled == 1)) {
if (likely(disabled == 1))
tracing_sched_switch_trace(tr, data, prev, next, flags);
if (trace_flags & TRACE_ITER_SCHED_TREE)
ftrace_all_fair_tasks(__rq, tr, data);
}
atomic_dec(&data->disabled);
local_irq_restore(flags);
@ -65,11 +62,8 @@ wakeup_func(void *__rq, struct task_struct *wakee, struct task_struct *curr)
data = tr->data[cpu];
disabled = atomic_inc_return(&data->disabled);
if (likely(disabled == 1)) {
if (likely(disabled == 1))
tracing_sched_wakeup_trace(tr, data, wakee, curr, flags);
if (trace_flags & TRACE_ITER_SCHED_TREE)
ftrace_all_fair_tasks(__rq, tr, data);
}
atomic_dec(&data->disabled);
local_irq_restore(flags);