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rcuwait: Add @state argument to rcuwait_wait_event()

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Extend rcuwait_wait_event() with a state variable so that it is not
restricted to UNINTERRUPTIBLE waits.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200321113241.824030968@linutronix.de
This commit is contained in:
Peter Zijlstra (Intel)
2020-03-21 12:25:55 +01:00
committed by Peter Zijlstra
parent d964ea7014
commit 80fbaf1c3f
2 changed files with 11 additions and 3 deletions
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2
kernel/locking/percpu-rwsem.c
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@@ -234,7 +234,7 @@ void percpu_down_write(struct percpu_rw_semaphore *sem)
*/
/* Wait for all active readers to complete. */
rcuwait_wait_event(&sem->writer, readers_active_check(sem));
rcuwait_wait_event(&sem->writer, readers_active_check(sem), TASK_UNINTERRUPTIBLE);
}
EXPORT_SYMBOL_GPL(percpu_down_write);