diff options
Diffstat (limited to 'include/linux/completion.h')
| -rw-r--r-- | include/linux/completion.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/completion.h b/include/linux/completion.h index 90663ad217f..268c5a4a2bd 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -18,9 +18,24 @@ struct completion { #define COMPLETION_INITIALIZER(work) \ { 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) } +#define COMPLETION_INITIALIZER_ONSTACK(work) \ + ({ init_completion(&work); work; }) + #define DECLARE_COMPLETION(work) \ struct completion work = COMPLETION_INITIALIZER(work) +/* + * Lockdep needs to run a non-constant initializer for on-stack + * completions - so we use the _ONSTACK() variant for those that + * are on the kernel stack: + */ +#ifdef CONFIG_LOCKDEP +# define DECLARE_COMPLETION_ONSTACK(work) \ + struct completion work = COMPLETION_INITIALIZER_ONSTACK(work) +#else +# define DECLARE_COMPLETION_ONSTACK(work) DECLARE_COMPLETION(work) +#endif + static inline void init_completion(struct completion *x) { x->done = 0; |