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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-12-24 12:59:09 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-12-24 12:59:09 -0800 |
commit | a4790c9457ae973d598bbd5ce58f9eaa2dd1576b (patch) | |
tree | 997c23d8182567d1b294022d81f9a315b2a642ef /include | |
parent | 08da5a32b7789289f48f3037b64df2945b5dafc2 (diff) | |
parent | bcbea798f8f1492052c23ceb4fbc2a96013a3865 (diff) | |
download | linux-stable-a4790c9457ae973d598bbd5ce58f9eaa2dd1576b.tar.gz linux-stable-a4790c9457ae973d598bbd5ce58f9eaa2dd1576b.tar.bz2 linux-stable-a4790c9457ae973d598bbd5ce58f9eaa2dd1576b.zip |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: print out alloc information with KERN_DEBUG instead of KERN_INFO
kthread_work: make lockdep happy
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/kthread.h | 45 |
1 files changed, 35 insertions, 10 deletions
diff --git a/include/linux/kthread.h b/include/linux/kthread.h index 685ea65eb803..ce0775aa64c3 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -81,16 +81,41 @@ struct kthread_work { #define DEFINE_KTHREAD_WORK(work, fn) \ struct kthread_work work = KTHREAD_WORK_INIT(work, fn) -static inline void init_kthread_worker(struct kthread_worker *worker) -{ - *worker = (struct kthread_worker)KTHREAD_WORKER_INIT(*worker); -} - -static inline void init_kthread_work(struct kthread_work *work, - kthread_work_func_t fn) -{ - *work = (struct kthread_work)KTHREAD_WORK_INIT(*work, fn); -} +/* + * kthread_worker.lock and kthread_work.done need their own lockdep class + * keys if they are defined on stack with lockdep enabled. Use the + * following macros when defining them on stack. + */ +#ifdef CONFIG_LOCKDEP +# define KTHREAD_WORKER_INIT_ONSTACK(worker) \ + ({ init_kthread_worker(&worker); worker; }) +# define DEFINE_KTHREAD_WORKER_ONSTACK(worker) \ + struct kthread_worker worker = KTHREAD_WORKER_INIT_ONSTACK(worker) +# define KTHREAD_WORK_INIT_ONSTACK(work, fn) \ + ({ init_kthread_work((&work), fn); work; }) +# define DEFINE_KTHREAD_WORK_ONSTACK(work, fn) \ + struct kthread_work work = KTHREAD_WORK_INIT_ONSTACK(work, fn) +#else +# define DEFINE_KTHREAD_WORKER_ONSTACK(worker) DEFINE_KTHREAD_WORKER(worker) +# define DEFINE_KTHREAD_WORK_ONSTACK(work, fn) DEFINE_KTHREAD_WORK(work, fn) +#endif + +extern void __init_kthread_worker(struct kthread_worker *worker, + const char *name, struct lock_class_key *key); + +#define init_kthread_worker(worker) \ + do { \ + static struct lock_class_key __key; \ + __init_kthread_worker((worker), "("#worker")->lock", &__key); \ + } while (0) + +#define init_kthread_work(work, fn) \ + do { \ + memset((work), 0, sizeof(struct kthread_work)); \ + INIT_LIST_HEAD(&(work)->node); \ + (work)->func = (fn); \ + init_waitqueue_head(&(work)->done); \ + } while (0) int kthread_worker_fn(void *worker_ptr); |