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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2021-11-29 18:46:45 +0100
committerPeter Zijlstra <peterz@infradead.org>2021-12-04 10:56:23 +0100
commite08f343be00c3fe8f9f6ac58085c81bcdd231fab (patch)
tree21b69eed3e05757b650b5f8e7ec32da894773779 /kernel/locking
parent9d0df37797453f168afdb2e6fd0353c73718ae9a (diff)
downloadlinux-e08f343be00c3fe8f9f6ac58085c81bcdd231fab.tar.bz2
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 <lkp@intel.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20211129174654.668506-3-bigeasy@linutronix.de
Diffstat (limited to 'kernel/locking')
-rw-r--r--kernel/locking/spinlock_rt.c6
1 files changed, 0 insertions, 6 deletions
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)