Commit f5468ffd authored Aug 06, 2015 by Will Deacon Committed by Ingo Molnar Aug 12, 2015

locking/lockref: Remove homebrew cmpxchg64_relaxed() macro definition



cmpxchg64_relaxed() is now defined by linux/atomic.h, so we can
remove our local definition from the lockref code.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman.Long@hp.com
Cc: paulmck@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1438880084-18856-5-git-send-email-will.deacon@arm.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 6d79ef2d

lib/lockref.c

+0 −8

Original line number	Original line	Diff line number	Diff line
	@@ -3,14 +3,6 @@

	#if USE_CMPXCHG_LOCKREF		#if USE_CMPXCHG_LOCKREF

	/*
	* Allow weakly-ordered memory architectures to provide barrier-less
	* cmpxchg semantics for lockref updates.
	*/
	#ifndef cmpxchg64_relaxed
	# define cmpxchg64_relaxed cmpxchg64
	#endif

	/*		/*
	* Note that the "cmpxchg()" reloads the "old" value for the		* Note that the "cmpxchg()" reloads the "old" value for the
	* failure case.		* failure case.