diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2009-12-20 17:36:27 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-09-20 13:18:02 -0700 |
| commit | 05e067a973d46e3c5348050b99c23c0584732b48 (patch) | |
| tree | 7d05e8b9519f0fe9c71143fb7ce15574a216e341 /kernel/sched.c | |
| parent | 54a2695e9fde1b206ad0810908c5830785f08d11 (diff) | |
sched: Fix hotplug hang
commit 70f1120527797adb31c68bdc6f1b45e182c342c7 upstream
The hot-unplug kstopmachine usage does a wakeup after
deactivating the cpu, hence we cannot use cpu_active()
here but must rely on the good olde online.
Reported-by: Sachin Sant <sachinp@in.ibm.com>
Reported-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Jens Axboe <jens.axboe@oracle.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
LKML-Reference: <1261326987.4314.24.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 86f2a6b61da5..b8ece01d4344 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -2376,7 +2376,7 @@ int select_task_rq(struct task_struct *p, int sd_flags, int wake_flags) * not worry about this generic constraint ] */ if (unlikely(!cpumask_test_cpu(cpu, &p->cpus_allowed) || - !cpu_active(cpu))) + !cpu_online(cpu))) cpu = select_fallback_rq(task_cpu(p), p); return cpu; |