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rcuwait: Let rcuwait_wake_up() return whether or not a task was awoken

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Propagating the return value of wake_up_process() back to the caller
can come in handy for future users, such as for statistics or
accounting purposes.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Message-Id: <20200424054837.5138-3-dave@stgolabs.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Davidlohr Bueso
2020-04-23 22:48:34 -07:00
committed by Paolo Bonzini
parent c9d64a1b2d
commit 9d9a6ebfea
2 changed files with 6 additions and 3 deletions
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include/linux/rcuwait.h
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@@ -25,7 +25,7 @@ static inline void rcuwait_init(struct rcuwait *w)
w->task = NULL;
}
extern void rcuwait_wake_up(struct rcuwait *w);
extern int rcuwait_wake_up(struct rcuwait *w);
/*
* The caller is responsible for locking around rcuwait_wait_event(),