From 26f5669892e66366f808364e5e404b156e3958e6 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 7 Sep 2021 12:11:47 +0200 Subject: [PATCH 077/158] locking: Remove rt_rwlock_is_contended() rt_rwlock_is_contended() has not 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 --- kernel/locking/spinlock_rt.c | 6 ------ 1 file changed, 6 deletions(-) Index: linux-5.15.19-rt29/kernel/locking/spinlock_rt.c =================================================================== --- linux-5.15.19-rt29.orig/kernel/locking/spinlock_rt.c +++ linux-5.15.19-rt29/kernel/locking/spinlock_rt.c @@ -257,12 +257,6 @@ void __sched rt_write_unlock(rwlock_t *r } 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)