wait: Return number of exclusive waiters awaken

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commit ee7dc86b6d upstream.

Sbitmap code will need to know how many waiters were actually woken for
its batched wakeups implementation.  Return the number of woken
exclusive waiters from __wake_up() to facilitate that.

Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20221115224553.23594-3-krisman@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Gabriel Krisman Bertazi 2022-11-15 17:45:52 -05:00 • committed by Greg Kroah-Hartman

parent 12815a7d8f

commit d710b1e91b

2 changed files with 12 additions and 8 deletions

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2

include/linux/wait.h

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18

kernel/sched/wait.c

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