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sched: Remove rq argument to sched_class::task_waking() 

In preparation of calling this without rq->lock held, remove the
dependency on the rq argument.

Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20110405152729.071474242@chello.nl
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2011-04-05 17:23:47 +02:00 committed by Ingo Molnar
parent 7608dec2ce
commit 74f8e4b233
3 changed files with 11 additions and 5 deletions
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10
include/linux/sched.h
View File

@ -1048,8 +1048,12 @@ struct sched_domain;
#define WF_FORK 0x02 /* child wakeup after fork */
#define ENQUEUE_WAKEUP 1
#define ENQUEUE_WAKING 2
#define ENQUEUE_HEAD 4
#define ENQUEUE_HEAD 2
#ifdef CONFIG_SMP
#define ENQUEUE_WAKING 4 /* sched_class::task_waking was called */
#else
#define ENQUEUE_WAKING 0
#endif
#define DEQUEUE_SLEEP 1
@ -1071,7 +1075,7 @@ struct sched_class {
void (*pre_schedule) (struct rq *this_rq, struct task_struct *task);
void (*post_schedule) (struct rq *this_rq);
void (*task_waking) (struct rq *this_rq, struct task_struct *task);
void (*task_waking) (struct task_struct *task);
void (*task_woken) (struct rq *this_rq, struct task_struct *task);
void (*set_cpus_allowed)(struct task_struct *p,

2
kernel/sched.c
View File

@ -2531,7 +2531,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state,
p->state = TASK_WAKING;
if (p->sched_class->task_waking) {
p->sched_class->task_waking(rq, p);
p->sched_class->task_waking(p);
en_flags |= ENQUEUE_WAKING;
}

4
kernel/sched_fair.c
View File

@ -1372,11 +1372,13 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags)
#ifdef CONFIG_SMP
static void task_waking_fair(struct rq *rq, struct task_struct *p)
static void task_waking_fair(struct task_struct *p)
{
struct sched_entity *se = &p->se;
struct cfs_rq *cfs_rq = cfs_rq_of(se);
lockdep_assert_held(&task_rq(p)->lock);
se->vruntime -= cfs_rq->min_vruntime;
}