diff options
author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-05-16 13:24:27 -0400 |
---|---|---|
committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-05-16 13:24:27 -0400 |
commit | 0a1f094ea7bfb405b96f53e5a6c55759e29e0987 (patch) | |
tree | 0d1beed2b746cddce8ae295a4117003437b30533 /kernel | |
parent | 0f106b4f7fe6ad697cff5c02f0edd80bb066fabe (diff) | |
parent | 678562e527fd9979f1765ffa1eb34738fc174425 (diff) |
Merge commit 'v2.6.38.6' into linaro-2.6.38
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/workqueue.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index ee6578b578a..7b65ae747c6 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -1283,8 +1283,14 @@ __acquires(&gcwq->lock) return true; spin_unlock_irq(&gcwq->lock); - /* CPU has come up inbetween, retry migration */ + /* + * We've raced with CPU hot[un]plug. Give it a breather + * and retry migration. cond_resched() is required here; + * otherwise, we might deadlock against cpu_stop trying to + * bring down the CPU on non-preemptive kernel. + */ cpu_relax(); + cond_resched(); } } |