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locking/rwsem: Prevent unneeded warning during locking selftest
author
Waiman Long
<longman@redhat.com>
Sat, 13 Apr 2019 17:22:44 +0000
(13:22 -0400)
committer
Ingo Molnar
<mingo@kernel.org>
Sun, 14 Apr 2019 09:09:35 +0000
(11:09 +0200)
Disable the DEBUG_RWSEMS check when locking selftest is running with
debug_locks_silent flag set.
Signed-off-by: Waiman Long <longman@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: huang ying <huang.ying.caritas@gmail.com>
Link:
http://lkml.kernel.org/r/20190413172259.2740-2-longman@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
kernel/locking/rwsem.h
patch
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diff --git
a/kernel/locking/rwsem.h
b/kernel/locking/rwsem.h
index
37db178
..
64877f5
100644
(file)
--- a/
kernel/locking/rwsem.h
+++ b/
kernel/locking/rwsem.h
@@
-30,7
+30,8
@@
#ifdef CONFIG_DEBUG_RWSEMS
# define DEBUG_RWSEMS_WARN_ON(c, sem) do { \
- if (WARN_ONCE(c, "DEBUG_RWSEMS_WARN_ON(%s): count = 0x%lx, owner = 0x%lx, curr 0x%lx, list %sempty\n",\
+ if (!debug_locks_silent && \
+ WARN_ONCE(c, "DEBUG_RWSEMS_WARN_ON(%s): count = 0x%lx, owner = 0x%lx, curr 0x%lx, list %sempty\n",\
#c, atomic_long_read(&(sem)->count), \
(long)((sem)->owner), (long)current, \
list_empty(&(sem)->wait_list) ? "" : "not ")) \