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>
diff --git a/include/linux/sched.h b/include/linux/sched.h
index ff4e2f9..7f5732f 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1048,8 +1048,12 @@
#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 @@
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,
diff --git a/kernel/sched.c b/kernel/sched.c
index d4b815d..46f42ca 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2531,7 +2531,7 @@
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;
}
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 96b2c95..ad4c414f 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1372,11 +1372,13 @@
#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;
}