Commit d4e5076c authored by xuyehan's avatar xuyehan Committed by Peter Zijlstra
Browse files

locking/rwsem: Remove an unused parameter of rwsem_wake() 



The 2nd parameter 'count' is not used in this function.
The places where the function is called are also modified.

Signed-off-by: default avatarxuyehan <xuyehan@xiaomi.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: default avatarWaiman Long <longman@redhat.com>
Link: https://lore.kernel.org/r/1625547043-28103-1-git-send-email-yehanxu1@gmail.com
parent d1bbfd0c

kernel/locking/rwsem.c

+3 −3
Original line number Original line Diff line number Diff line
@@ -1165,7 +1165,7 @@ rwsem_down_write_slowpath(struct rw_semaphore *sem, int state) 
 * handle waking up a waiter on the semaphore

 * handle waking up a waiter on the semaphore

 * - up_read/up_write has decremented the active part of count if we come here

 * - up_read/up_write has decremented the active part of count if we come here

 */

 */

static struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem, long count)

static struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)

{

{

	unsigned long flags;

	unsigned long flags;

	DEFINE_WAKE_Q(wake_q);

	DEFINE_WAKE_Q(wake_q);
@@ -1297,7 +1297,7 @@ static inline void __up_read(struct rw_semaphore *sem) 
	if (unlikely((tmp & (RWSEM_LOCK_MASK|RWSEM_FLAG_WAITERS)) ==

	if (unlikely((tmp & (RWSEM_LOCK_MASK|RWSEM_FLAG_WAITERS)) ==

		      RWSEM_FLAG_WAITERS)) {

		      RWSEM_FLAG_WAITERS)) {

		clear_nonspinnable(sem);

		clear_nonspinnable(sem);

		rwsem_wake(sem, tmp);

		rwsem_wake(sem);

	}

	}

}

}
@@ -1319,7 +1319,7 @@ static inline void __up_write(struct rw_semaphore *sem) 
	rwsem_clear_owner(sem);

	rwsem_clear_owner(sem);

	tmp = atomic_long_fetch_add_release(-RWSEM_WRITER_LOCKED, &sem->count);

	tmp = atomic_long_fetch_add_release(-RWSEM_WRITER_LOCKED, &sem->count);

	if (unlikely(tmp & RWSEM_FLAG_WAITERS))

	if (unlikely(tmp & RWSEM_FLAG_WAITERS))

		rwsem_wake(sem, tmp);

		rwsem_wake(sem);

}

}





/*

/*