From e08f343be00c3fe8f9f6ac58085c81bcdd231fab Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 29 Nov 2021 18:46:45 +0100 Subject: locking: Remove rt_rwlock_is_contended(). rt_rwlock_is_contended() has no users. It makes no sense to use it as rwlock_is_contended() because it is a sleeping lock on RT and preemption is possible. It reports always != 0 if used by a writer and even if there is a waiter then the lock might not be handed over if the current owner has the highest priority. Remove rt_rwlock_is_contended(). Reported-by: kernel test robot Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/r/20211129174654.668506-3-bigeasy@linutronix.de --- kernel/locking/spinlock_rt.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'kernel/locking') diff --git a/kernel/locking/spinlock_rt.c b/kernel/locking/spinlock_rt.c index b2e553f9255b..9e396a09fe0f 100644 --- a/kernel/locking/spinlock_rt.c +++ b/kernel/locking/spinlock_rt.c @@ -257,12 +257,6 @@ void __sched rt_write_unlock(rwlock_t *rwlock) } EXPORT_SYMBOL(rt_write_unlock); -int __sched rt_rwlock_is_contended(rwlock_t *rwlock) -{ - return rw_base_is_contended(&rwlock->rwbase); -} -EXPORT_SYMBOL(rt_rwlock_is_contended); - #ifdef CONFIG_DEBUG_LOCK_ALLOC void __rt_rwlock_init(rwlock_t *rwlock, const char *name, struct lock_class_key *key) -- cgit 1.4.1