From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757750AbaCSHB3 (ORCPT ); Wed, 19 Mar 2014 03:01:29 -0400 Received: from merlin.infradead.org ([205.233.59.134]:52997 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756559AbaCSG43 (ORCPT ); Wed, 19 Mar 2014 02:56:29 -0400 Message-Id: <20140319065204.578288229@infradead.org> User-Agent: quilt/0.60-1 Date: Wed, 19 Mar 2014 07:47:44 +0100 From: Peter Zijlstra To: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, mingo@kernel.org, will.deacon@arm.com, paulmck@linux.vnet.ibm.com, Peter Zijlstra Subject: [PATCH 15/31] arch,m32r: Convert smp_mb__* References: <20140319064729.660482086@infradead.org> Content-Disposition: inline; filename=peterz-m32r-smp_mb__atomic.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org M32r uses asm-generic/barrier.h and its smp_mb() is barrier(); therefore we can use the generic versions which default to smp_mb(). Signed-off-by: Peter Zijlstra --- arch/m32r/include/asm/atomic.h | 7 +------ arch/m32r/include/asm/bitops.h | 6 ++---- 2 files changed, 3 insertions(+), 10 deletions(-) --- a/arch/m32r/include/asm/atomic.h +++ b/arch/m32r/include/asm/atomic.h @@ -13,6 +13,7 @@ #include #include #include +#include /* * Atomic operations that C can't guarantee us. Useful for @@ -308,10 +309,4 @@ static __inline__ void atomic_set_mask(u local_irq_restore(flags); } -/* Atomic operations are already serializing on m32r */ -#define smp_mb__before_atomic_dec() barrier() -#define smp_mb__after_atomic_dec() barrier() -#define smp_mb__before_atomic_inc() barrier() -#define smp_mb__after_atomic_inc() barrier() - #endif /* _ASM_M32R_ATOMIC_H */ --- a/arch/m32r/include/asm/bitops.h +++ b/arch/m32r/include/asm/bitops.h @@ -21,6 +21,7 @@ #include #include #include +#include /* * These have to be done with inline assembly: that way the bit-setting @@ -73,7 +74,7 @@ static __inline__ void set_bit(int nr, v * * clear_bit() is atomic and may not be reordered. However, it does * not contain a memory barrier, so if it is used for locking purposes, - * you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit() + * you should call smp_mb__before_atomic() and/or smp_mb__after_atomic() * in order to ensure changes are visible on other processors. */ static __inline__ void clear_bit(int nr, volatile void * addr) @@ -103,9 +104,6 @@ static __inline__ void clear_bit(int nr, local_irq_restore(flags); } -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() - /** * change_bit - Toggle a bit in memory * @nr: Bit to clear