arch,arm: Convert smp_mb__*()
authorPeter Zijlstra <peterz@infradead.org>
Wed, 12 Mar 2014 16:11:00 +0000 (17:11 +0100)
committerIngo Molnar <mingo@kernel.org>
Fri, 18 Apr 2014 09:40:32 +0000 (11:40 +0200)
commit030d0178bdbd237c1f0577f03bbc1d7140a75044
treebba9497eca400523431e3d44469e06b9456fa843
parentd594ffa94b7efdd8c6da5ee48aea8ae229809b55
arch,arm: Convert smp_mb__*()

ARM uses ll/sc primitives that do not imply barriers for all regular
atomic ops, therefore smp_mb__{before,after} need be a full barrier.

Since ARM doesn't use asm-generic/barrier.h include the required
definitions in its asm/barrier.h

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/n/tip-yijo7sglsl7uusbp13upcuvo@git.kernel.org
Cc: Albin Tonnerre <albin.tonnerre@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chen Gang <gang.chen@asianux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nicolas Pitre <nico@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Victor Kamensky <victor.kamensky@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/arm/include/asm/atomic.h
arch/arm/include/asm/barrier.h
arch/arm/include/asm/bitops.h