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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-04-25 10:00:43 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-04-27 09:36:41 +0200
commitac54bc121e1f491b70d71ac234b8e0f76f79d7ad (patch)
tree60980d58b61a7c10699a68f5f79e52a470868851
parent9c1862566176250bae343a5cee617a5ce41efa54 (diff)
Revert "locking/lockdep: Add debug_locks check in __lock_downgrade()"
This reverts commit 0e0f7b30721233ce610bde2395a8e58ff7771475 which was commit 71492580571467fb7177aade19c18ce7486267f5 upstream. Tetsuo rightly points out that the backport here is incorrect, as it touches the __lock_set_class function instead of the intended __lock_downgrade function. Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Cc: Waiman Long <longman@redhat.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--kernel/locking/lockdep.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 0cbdbbb0729f..26b57e24476f 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -3567,9 +3567,6 @@ __lock_set_class(struct lockdep_map *lock, const char *name,
unsigned int depth;
int i;
- if (unlikely(!debug_locks))
- return 0;
-
depth = curr->lockdep_depth;
/*
* This function is about (re)setting the class of a held lock,