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| author | Yong Zhang <yong.zhang0@gmail.com> | 2010-12-22 10:27:53 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-12-22 10:27:53 +0100 |
| commit | 4f32e9b1f812fd6c00cc85a127583fefbdedaedc (patch) | |
| tree | c0e1d3e1d90758d2f4f3f8cad6beea316d68b5a0 /kernel | |
| parent | 90a8a73c06cc32b609a880d48449d7083327e11a (diff) | |
| download | lwn-4f32e9b1f812fd6c00cc85a127583fefbdedaedc.tar.gz lwn-4f32e9b1f812fd6c00cc85a127583fefbdedaedc.zip | |
kthread_work: make lockdep happy
spinlock in kthread_worker and wait_queue_head in kthread_work both
should be lockdep sensible, so change the interface to make it
suiltable for CONFIG_LOCKDEP.
tj: comment update
Reported-by: Nicolas <nicolas.mailhot@laposte.net>
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Tested-by: Andy Walls <awalls@md.metrocast.net>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/kthread.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c index 2dc3786349d1..ca61bbdd44b2 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -265,6 +265,17 @@ int kthreadd(void *unused) return 0; } +void __init_kthread_worker(struct kthread_worker *worker, + const char *name, + struct lock_class_key *key) +{ + spin_lock_init(&worker->lock); + lockdep_set_class_and_name(&worker->lock, key, name); + INIT_LIST_HEAD(&worker->work_list); + worker->task = NULL; +} +EXPORT_SYMBOL_GPL(__init_kthread_worker); + /** * kthread_worker_fn - kthread function to process kthread_worker * @worker_ptr: pointer to initialized kthread_worker |