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From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Thomas Gleixner <tglx@linutronix.de>,
	Will Deacon <will@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: [GIT PULL] locking fix
Date: Sun, 14 Jul 2019 13:36:21 +0200
Message-ID: <20190714113621.GA58788@gmail.com> (raw)

Linus,

Please pull the latest locking-urgent-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-urgent-for-linus

   # HEAD: 68d41d8c94a31dfb8233ab90b9baf41a2ed2da68 locking/lockdep: Fix lock used or unused stats error

A single fix for a locking statistics bug.

 Thanks,

	Ingo

------------------>
Yuyang Du (1):
      locking/lockdep: Fix lock used or unused stats error


 kernel/locking/lockdep_proc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/locking/lockdep_proc.c b/kernel/locking/lockdep_proc.c
index 9c49ec645d8b..65b6a1600c8f 100644
--- a/kernel/locking/lockdep_proc.c
+++ b/kernel/locking/lockdep_proc.c
@@ -210,6 +210,7 @@ static int lockdep_stats_show(struct seq_file *m, void *v)
 		      nr_hardirq_read_safe = 0, nr_hardirq_read_unsafe = 0,
 		      sum_forward_deps = 0;
 
+#ifdef CONFIG_PROVE_LOCKING
 	list_for_each_entry(class, &all_lock_classes, lock_entry) {
 
 		if (class->usage_mask == 0)
@@ -241,12 +242,12 @@ static int lockdep_stats_show(struct seq_file *m, void *v)
 		if (class->usage_mask & LOCKF_ENABLED_HARDIRQ_READ)
 			nr_hardirq_read_unsafe++;
 
-#ifdef CONFIG_PROVE_LOCKING
 		sum_forward_deps += lockdep_count_forward_deps(class);
-#endif
 	}
 #ifdef CONFIG_DEBUG_LOCKDEP
 	DEBUG_LOCKS_WARN_ON(debug_atomic_read(nr_unused_locks) != nr_unused);
+#endif
+
 #endif
 	seq_printf(m, " lock-classes:                  %11lu [max: %lu]\n",
 			nr_lock_classes, MAX_LOCKDEP_KEYS);

             reply index

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-14 11:36 Ingo Molnar [this message]
2019-07-14 18:45 ` pr-tracker-bot
  -- strict thread matches above, loose matches on Subject: below --
2019-05-16 16:01 Ingo Molnar
2019-05-16 17:57 ` Linus Torvalds
2019-05-16 18:39   ` Greg KH
2019-05-16 18:42     ` Linus Torvalds
2019-05-16 23:55       ` Sasha Levin
2019-05-17 12:16         ` Greg KH
2019-05-16 18:20 ` pr-tracker-bot
2019-04-12 11:53 Ingo Molnar
2019-04-13  4:05 ` pr-tracker-bot
2017-07-21 10:11 Ingo Molnar
2016-09-13 18:11 Ingo Molnar
2016-04-16  9:16 Ingo Molnar
2015-08-14  7:08 Ingo Molnar
2015-03-28 10:07 Ingo Molnar
2015-03-01 16:57 Ingo Molnar
2013-10-26 12:19 Ingo Molnar
2013-10-27 17:28 ` Linus Torvalds
2013-10-27 19:00   ` Maarten Lankhorst
2013-10-27 19:23     ` Linus Torvalds
2013-10-27 19:35       ` Linus Torvalds
2013-10-27 19:37       ` Maarten Lankhorst
2013-10-27 19:51         ` Linus Torvalds
2013-10-27 19:56           ` Maarten Lankhorst
2013-10-27 19:59             ` Linus Torvalds
2013-10-28  8:47               ` Ingo Molnar
2011-02-15 17:02 Ingo Molnar

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