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locking/rtmutex: Switch to from cmpxchg_*() to try_cmpxchg_*() 

Allows the compiler to generate better code depending on the architecture.

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210815211302.668958502@linutronix.de
This commit is contained in:
Thomas Gleixner 2021-08-15 23:27:55 +02:00 committed by Ingo Molnar
parent 785159301b
commit 709e0b6286
1 changed files with 2 additions and 2 deletions
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4
kernel/locking/rtmutex.c
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@ -145,14 +145,14 @@ static __always_inline bool rt_mutex_cmpxchg_acquire(struct rt_mutex *lock,
struct task_struct *old,
struct task_struct *new)
{
return cmpxchg_acquire(&lock->owner, old, new) == old;
return try_cmpxchg_acquire(&lock->owner, &old, new);
}
static __always_inline bool rt_mutex_cmpxchg_release(struct rt_mutex *lock,
struct task_struct *old,
struct task_struct *new)
{
return cmpxchg_release(&lock->owner, old, new) == old;
return try_cmpxchg_release(&lock->owner, &old, new);
}
/*