sched: Fix TASK_WAKING & loadaverage breakage

Fix this:

top - 21:54:00 up  2:59,  1 user,  load average: 432512.33, 426421.74, 417432.74

Which happens because we now set TASK_WAKING before activate_task().

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched.c b/kernel/sched.c
index 5049d95..969dfae 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2343,7 +2343,11 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state,
        /*
         * In order to handle concurrent wakeups and release the rq->lock
         * we put the task in TASK_WAKING state.
+        *
+        * First fix up the nr_uninterruptible count:
         */
+       if (task_contributes_to_load(p))
+               rq->nr_uninterruptible--;
        p->state = TASK_WAKING;
        task_rq_unlock(rq, &flags);