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From: tip-bot for Oleg Nesterov on 2 Apr 2010 15:20
Commit-ID: 47a70985e5c093ae03d8ccf633c70a93761d86f2
Gitweb: http://git.kernel.org/tip/47a70985e5c093ae03d8ccf633c70a93761d86f2
Author: Oleg Nesterov <oleg(a)redhat.com>
AuthorDate: Tue, 30 Mar 2010 18:58:29 +0200
Committer: Ingo Molnar <mingo(a)elte.hu>
CommitDate: Fri, 2 Apr 2010 20:11:05 +0200

sched: set_cpus_allowed_ptr(): Don't use rq->migration_thread after unlock

Trivial typo fix. rq->migration_thread can be NULL after
task_rq_unlock(), this is why we have "mt" which should be
used instead.

Signed-off-by: Oleg Nesterov <oleg(a)redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra(a)chello.nl>
LKML-Reference: <20100330165829.GA18284(a)redhat.com>
Signed-off-by: Ingo Molnar <mingo(a)elte.hu>
---
kernel/sched.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 49d2fa7..528a105 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -5387,7 +5387,7 @@ int set_cpus_allowed_ptr(struct task_struct *p, const struct cpumask *new_mask)

get_task_struct(mt);
task_rq_unlock(rq, &flags);
- wake_up_process(rq->migration_thread);
+ wake_up_process(mt);
put_task_struct(mt);
wait_for_completion(&req.done);
tlb_migrate_finish(p->mm);
--
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Next: [tip:sched/core] sched: Optimize task_rq_lock()