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Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/events: Revert trace_sched_stat_sleeptime()
This commit is contained in:
Linus Torvalds 2012-02-27 07:55:39 -08:00
commit 70ca00db10
3 changed files with 2 additions and 51 deletions
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50
include/trace/events/sched.h
View File

@ -370,56 +370,6 @@ TRACE_EVENT(sched_stat_runtime,
(unsigned long long)__entry->vruntime)
);
#ifdef CREATE_TRACE_POINTS
static inline u64 trace_get_sleeptime(struct task_struct *tsk)
{
#ifdef CONFIG_SCHEDSTATS
u64 block, sleep;
block = tsk->se.statistics.block_start;
sleep = tsk->se.statistics.sleep_start;
tsk->se.statistics.block_start = 0;
tsk->se.statistics.sleep_start = 0;
return block ? block : sleep ? sleep : 0;
#else
return 0;
#endif
}
#endif
/*
* Tracepoint for accounting sleeptime (time the task is sleeping
* or waiting for I/O).
*/
TRACE_EVENT(sched_stat_sleeptime,
TP_PROTO(struct task_struct *tsk, u64 now),
TP_ARGS(tsk, now),
TP_STRUCT__entry(
__array( char, comm, TASK_COMM_LEN )
__field( pid_t, pid )
__field( u64, sleeptime )
),
TP_fast_assign(
memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
__entry->pid = tsk->pid;
__entry->sleeptime = trace_get_sleeptime(tsk);
__entry->sleeptime = __entry->sleeptime ?
now - __entry->sleeptime : 0;
)
TP_perf_assign(
__perf_count(__entry->sleeptime);
),
TP_printk("comm=%s pid=%d sleeptime=%Lu [ns]",
__entry->comm, __entry->pid,
(unsigned long long)__entry->sleeptime)
);
/*
* Tracepoint for showing priority inheritance modifying a tasks
* priority.

1
kernel/sched/core.c
View File

@ -1932,7 +1932,6 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev)
local_irq_enable();
#endif /* __ARCH_WANT_INTERRUPTS_ON_CTXSW */
finish_lock_switch(rq, prev);
trace_sched_stat_sleeptime(current, rq->clock);
fire_sched_in_preempt_notifiers(current);
if (mm)

2
kernel/sched/fair.c
View File

@ -1003,6 +1003,7 @@ static void enqueue_sleeper(struct cfs_rq *cfs_rq, struct sched_entity *se)
if (unlikely(delta > se->statistics.sleep_max))
se->statistics.sleep_max = delta;
se->statistics.sleep_start = 0;
se->statistics.sum_sleep_runtime += delta;
if (tsk) {
@ -1019,6 +1020,7 @@ static void enqueue_sleeper(struct cfs_rq *cfs_rq, struct sched_entity *se)
if (unlikely(delta > se->statistics.block_max))
se->statistics.block_max = delta;
se->statistics.block_start = 0;
se->statistics.sum_sleep_runtime += delta;
if (tsk) {