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locking/rtmutex: Fix misleading comment

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Going through the RCU-boost and rtmutex code, I ran into this utterly
confusing comment. Fix it to avoid confusing future readers.

[ tglx: Wordsmithed the comment ]

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/all/20241008092606.GJ33184@noisy.programming.kicks-ass.net
This commit is contained in:
Peter Zijlstra
2024-10-08 11:26:06 +02:00
committed by Thomas Gleixner
parent 77abd3b7d9
commit d12b802f18
1 changed files with 4 additions and 4 deletions
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8
kernel/locking/rtmutex_api.c
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@@ -175,10 +175,10 @@ bool __sched __rt_mutex_futex_unlock(struct rt_mutex_base *lock,
}
/*
* We've already deboosted, mark_wakeup_next_waiter() will
* retain preempt_disabled when we drop the wait_lock, to
* avoid inversion prior to the wakeup. preempt_disable()
* therein pairs with rt_mutex_postunlock().
* mark_wakeup_next_waiter() deboosts and retains preemption
* disabled when dropping the wait_lock, to avoid inversion prior
* to the wakeup. preempt_disable() therein pairs with the
* preempt_enable() in rt_mutex_postunlock().
*/
mark_wakeup_next_waiter(wqh, lock);