From 17b40213ab2b091fd5d2a9337eae62312608ad3d Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 13 Mar 2014 19:00:37 +0100 Subject: arch,cris: Convert smp_mb__*() Cris fully relies on asm-generic/barrier.h, therefore its smp_mb() is barrier(), thus we can use the default implementation that uses smp_mb(). (Include asm/system.h and asm/barrier.h to avoid header dependency hell.) Signed-off-by: Peter Zijlstra Acked-by: Jesper Nilsson Acked-by: Paul E. McKenney Link: http://lkml.kernel.org/n/tip-wvewbe8os3s1e4pt1cdotuee@git.kernel.org Cc: Andrew Morton Cc: Geert Uytterhoeven Cc: Jesper Nilsson Cc: Linus Torvalds Cc: Mikael Starvik Cc: linux-cris-kernel@axis.com Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar --- arch/cris/include/asm/atomic.h | 8 ++------ arch/cris/include/asm/bitops.h | 9 ++------- 2 files changed, 4 insertions(+), 13 deletions(-) (limited to 'arch/cris') diff --git a/arch/cris/include/asm/atomic.h b/arch/cris/include/asm/atomic.h index 1056a5dfe04..aa429baebaf 100644 --- a/arch/cris/include/asm/atomic.h +++ b/arch/cris/include/asm/atomic.h @@ -7,6 +7,8 @@ #include #include #include +#include +#include /* * Atomic operations that C can't guarantee us. Useful for @@ -151,10 +153,4 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) return ret; } -/* Atomic operations are already serializing */ -#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 diff --git a/arch/cris/include/asm/bitops.h b/arch/cris/include/asm/bitops.h index 053c17b3655..bd49a546f4f 100644 --- a/arch/cris/include/asm/bitops.h +++ b/arch/cris/include/asm/bitops.h @@ -21,6 +21,7 @@ #include #include #include +#include /* * set_bit - Atomically set a bit in memory @@ -42,7 +43,7 @@ * * 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. */ @@ -84,12 +85,6 @@ static inline int test_and_set_bit(int nr, volatile unsigned long *addr) return retval; } -/* - * clear_bit() doesn't provide any barrier for the compiler. - */ -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() - /** * test_and_clear_bit - Clear a bit and return its old value * @nr: Bit to clear -- cgit v1.2.3-18-g5258