linux-kernel - [tip:locking/core] locking/lockdep: Fix a comment in add_chain

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Date:   Wed, 27 Feb 2019 23:11:11 -0800
From:   tip-bot for Bart Van Assche <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     peterz@...radead.org, johannes@...solutions.net,
        bvanassche@....org, linux-kernel@...r.kernel.org,
        torvalds@...ux-foundation.org, paulmck@...ux.vnet.ibm.com,
        tglx@...utronix.de, longman@...hat.com, akpm@...ux-foundation.org,
        mingo@...nel.org, will.deacon@....com, hpa@...or.com
Subject: [tip:locking/core] locking/lockdep: Fix a comment in
 add_chain_cache()

Commit-ID:  527af3ea273b2cf0c017a2c90090b3c94af8aba4
Gitweb:     https://git.kernel.org/tip/527af3ea273b2cf0c017a2c90090b3c94af8aba4
Author:     Bart Van Assche <bvanassche@....org>
AuthorDate: Thu, 14 Feb 2019 15:00:49 -0800
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Thu, 28 Feb 2019 07:55:45 +0100

locking/lockdep: Fix a comment in add_chain_cache()

Reflect that add_chain_cache() is always called with the graph lock held.

Signed-off-by: Bart Van Assche <bvanassche@....org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Johannes Berg <johannes@...solutions.net>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Waiman Long <longman@...hat.com>
Cc: Will Deacon <will.deacon@....com>
Cc: johannes.berg@...el.com
Cc: tj@...nel.org
Link: https://lkml.kernel.org/r/20190214230058.196511-15-bvanassche@acm.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 kernel/locking/lockdep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 753a9b758266..ec0cb794f70d 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -2266,7 +2266,7 @@ static inline int add_chain_cache(struct task_struct *curr,
 	 */
 
 	/*
-	 * We might need to take the graph lock, ensure we've got IRQs
+	 * The caller must hold the graph lock, ensure we've got IRQs
 	 * disabled to make this an IRQ-safe lock.. for recursion reasons
 	 * lockdep won't complain about its own locking errors.
 	 */