Commit 26536e7c authored Apr 13, 2019 by Waiman Long Committed by Ingo Molnar Apr 14, 2019

locking/rwsem: Prevent unneeded warning during locking selftest



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>

parent 364f784f

kernel/locking/rwsem.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -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 ")) \

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