linux-kernel - [tip: locking/core] locking/rtmutex: Fix misleading comment in rt_mutex

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Date:   Mon, 29 Mar 2021 16:24:08 -0000
From:   "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: locking/core] locking/rtmutex: Fix misleading comment in
 rt_mutex_postunlock()

The following commit has been merged into the locking/core branch of tip:

Commit-ID:     82cd5b1039e26b1b1254886464991e34de439ac5
Gitweb:        https://git.kernel.org/tip/82cd5b1039e26b1b1254886464991e34de439ac5
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Fri, 26 Mar 2021 16:29:42 +01:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Mon, 29 Mar 2021 15:57:04 +02:00

locking/rtmutex: Fix misleading comment in rt_mutex_postunlock()

Preemption is disabled in mark_wakeup_next_waiter(,) not in
rt_mutex_slowunlock().

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lore.kernel.org/r/20210326153944.341734608@linutronix.de
---
 kernel/locking/rtmutex.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 7d0c168..512b400 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -1305,7 +1305,7 @@ void __sched rt_mutex_postunlock(struct wake_q_head *wake_q)
 {
 	wake_up_q(wake_q);
 
-	/* Pairs with preempt_disable() in rt_mutex_slowunlock() */
+	/* Pairs with preempt_disable() in mark_wakeup_next_waiter() */
 	preempt_enable();
 }