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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2017-12-09 12:42:44 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@gmail.com> | 2020-05-06 17:14:16 -0400 |
| commit | fb1c3ec7ebf8679beb0e5a52bc94cb93999fb93c (patch) | |
| tree | 37b0588cb932976982b8923391428cdf38d6a1f2 | |
| parent | 0fb5aa1c956ae46b3dec812385adf602a0c56a0f (diff) | |
closures: closure_wait_event()
| -rw-r--r-- | include/linux/closure.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/closure.h b/include/linux/closure.h index 261d06729013..d6a4f454396d 100644 --- a/include/linux/closure.h +++ b/include/linux/closure.h @@ -378,4 +378,26 @@ static inline void closure_call(struct closure *cl, closure_fn fn, continue_at_nobarrier(cl, fn, wq); } +#define __closure_wait_event(waitlist, _cond) \ +do { \ + struct closure cl; \ + \ + closure_init_stack(&cl); \ + \ + while (1) { \ + closure_wait(waitlist, &cl); \ + if (_cond) \ + break; \ + closure_sync(&cl); \ + } \ + closure_wake_up(waitlist); \ + closure_sync(&cl); \ +} while (0) + +#define closure_wait_event(waitlist, _cond) \ +do { \ + if (!(_cond)) \ + __closure_wait_event(waitlist, _cond); \ +} while (0) + #endif /* _LINUX_CLOSURE_H */ |