From d594ffa94b7efdd8c6da5ee48aea8ae229809b55 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 12 Mar 2014 17:11:00 +0100 Subject: [PATCH] arch,arc: Convert smp_mb__*() The arc mb() implementation is a compiler barrier(), therefore it all doesn't matter one way or the other. Simply remove the existing definitions and use whatever is generated by the defaults. Signed-off-by: Peter Zijlstra Acked-by: Paul E. McKenney Link: http://lkml.kernel.org/n/tip-ua48a59wri3ybz1rz8i7uvbr@git.kernel.org Cc: Linus Torvalds Cc: Vineet Gupta Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar --- arch/arc/include/asm/atomic.h | 5 ----- arch/arc/include/asm/bitops.h | 5 +---- 2 files changed, 1 insertion(+), 9 deletions(-) diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h index 03e494f..83f03ca 100644 --- a/arch/arc/include/asm/atomic.h +++ b/arch/arc/include/asm/atomic.h @@ -190,11 +190,6 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) #endif /* !CONFIG_ARC_HAS_LLSC */ -#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() - /** * __atomic_add_unless - add unless the number is a given value * @v: pointer of type atomic_t diff --git a/arch/arc/include/asm/bitops.h b/arch/arc/include/asm/bitops.h index 647a83a..ebc0cf3 100644 --- a/arch/arc/include/asm/bitops.h +++ b/arch/arc/include/asm/bitops.h @@ -19,6 +19,7 @@ #include #include +#include /* * Hardware assisted read-modify-write using ARC700 LLOCK/SCOND insns. @@ -496,10 +497,6 @@ static inline __attribute__ ((const)) int __ffs(unsigned long word) */ #define ffz(x) __ffs(~(x)) -/* TODO does this affect uni-processor code */ -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() - #include #include #include -- 2.7.4