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authorDmitry Adamushko <dmitry.adamushko@gmail.com>2007-11-15 22:57:40 +0300
committerIngo Molnar <mingo@elte.hu>2007-11-15 22:57:40 +0300
commit94bc9a7bd97efdda4dfbe61d0df32ce19d41c0a9 (patch)
treeac684740f71e1e6dcfbb70b3d466c952f8f4072e /kernel
parentce96b5ac742801718ae86d2adf0500c5abef3782 (diff)
downloadlinux-94bc9a7bd97efdda4dfbe61d0df32ce19d41c0a9.tar.xz
sched: remove activate_idle_task()
cpu_down() code is ok wrt sched_idle_next() placing the 'idle' task not at the beginning of the queue. So get rid of activate_idle_task() and make use of activate_task() instead. It is the same as activate_task(), except for the update_rq_clock(rq) call that is redundant. Code size goes down: text data bss dec hex filename 47853 3934 336 52123 cb9b sched.o.before 47828 3934 336 52098 cb82 sched.o.after Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched.c22
1 files changed, 4 insertions, 18 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index db1f71e31310..cc8cb6f7d82e 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -5282,23 +5282,9 @@ static void migrate_live_tasks(int src_cpu)
}
/*
- * activate_idle_task - move idle task to the _front_ of runqueue.
- */
-static void activate_idle_task(struct task_struct *p, struct rq *rq)
-{
- update_rq_clock(rq);
-
- if (p->state == TASK_UNINTERRUPTIBLE)
- rq->nr_uninterruptible--;
-
- enqueue_task(rq, p, 0);
- inc_nr_running(p, rq);
-}
-
-/*
* Schedules idle task to be the next runnable task on current CPU.
- * It does so by boosting its priority to highest possible and adding it to
- * the _front_ of the runqueue. Used by CPU offline code.
+ * It does so by boosting its priority to highest possible.
+ * Used by CPU offline code.
*/
void sched_idle_next(void)
{
@@ -5318,8 +5304,8 @@ void sched_idle_next(void)
__setscheduler(rq, p, SCHED_FIFO, MAX_RT_PRIO-1);
- /* Add idle task to the _front_ of its priority queue: */
- activate_idle_task(p, rq);
+ update_rq_clock(rq);
+ activate_task(rq, p, 0);
spin_unlock_irqrestore(&rq->lock, flags);
}