Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | Date | Mon, 06 Dec 2021 15:15:49 -0000 | From | "tip-bot2 for Sebastian Andrzej Siewior" <> | Subject | [tip: locking/core] locking: Remove rt_rwlock_is_contended(). |
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The following commit has been merged into the locking/core branch of tip:
Commit-ID: e08f343be00c3fe8f9f6ac58085c81bcdd231fab Gitweb: https://git.kernel.org/tip/e08f343be00c3fe8f9f6ac58085c81bcdd231fab Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> AuthorDate: Mon, 29 Nov 2021 18:46:45 +01:00 Committer: Peter Zijlstra <peterz@infradead.org> CommitterDate: Sat, 04 Dec 2021 10:56:23 +01:00
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 --- kernel/locking/spinlock_rt.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/kernel/locking/spinlock_rt.c b/kernel/locking/spinlock_rt.c index b2e553f..9e396a0 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)
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