From a60514bae72ee41b506b8702dfdd6eeeffe58556 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Sun, 27 Dec 2015 15:04:42 +0200 Subject: [PATCH] mips: define __smp_xxx This defines __smp_xxx barriers for mips, for use by virtualization. smp_xxx barriers are removed as they are defined correctly by asm-generic/barriers.h Note: the only exception is smp_mb__before_llsc which is mips-specific. We define both the __smp_mb__before_llsc variant (for use in asm/barriers.h) and smp_mb__before_llsc (for use elsewhere on this architecture). Signed-off-by: Michael S. Tsirkin Acked-by: Arnd Bergmann Acked-by: Peter Zijlstra (Intel) --- arch/mips/include/asm/barrier.h | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h index 3eac4b909355..d296633d890e 100644 --- a/arch/mips/include/asm/barrier.h +++ b/arch/mips/include/asm/barrier.h @@ -85,20 +85,20 @@ #define wmb() fast_wmb() #define rmb() fast_rmb() -#if defined(CONFIG_WEAK_ORDERING) && defined(CONFIG_SMP) +#if defined(CONFIG_WEAK_ORDERING) # ifdef CONFIG_CPU_CAVIUM_OCTEON -# define smp_mb() __sync() -# define smp_rmb() barrier() -# define smp_wmb() __syncw() +# define __smp_mb() __sync() +# define __smp_rmb() barrier() +# define __smp_wmb() __syncw() # else -# define smp_mb() __asm__ __volatile__("sync" : : :"memory") -# define smp_rmb() __asm__ __volatile__("sync" : : :"memory") -# define smp_wmb() __asm__ __volatile__("sync" : : :"memory") +# define __smp_mb() __asm__ __volatile__("sync" : : :"memory") +# define __smp_rmb() __asm__ __volatile__("sync" : : :"memory") +# define __smp_wmb() __asm__ __volatile__("sync" : : :"memory") # endif #else -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() +#define __smp_mb() barrier() +#define __smp_rmb() barrier() +#define __smp_wmb() barrier() #endif #if defined(CONFIG_WEAK_REORDERING_BEYOND_LLSC) && defined(CONFIG_SMP) @@ -111,6 +111,7 @@ #ifdef CONFIG_CPU_CAVIUM_OCTEON #define smp_mb__before_llsc() smp_wmb() +#define __smp_mb__before_llsc() __smp_wmb() /* Cause previous writes to become visible on all CPUs as soon as possible */ #define nudge_writes() __asm__ __volatile__(".set push\n\t" \ ".set arch=octeon\n\t" \ @@ -118,11 +119,12 @@ ".set pop" : : : "memory") #else #define smp_mb__before_llsc() smp_llsc_mb() +#define __smp_mb__before_llsc() smp_llsc_mb() #define nudge_writes() mb() #endif -#define smp_mb__before_atomic() smp_mb__before_llsc() -#define smp_mb__after_atomic() smp_llsc_mb() +#define __smp_mb__before_atomic() __smp_mb__before_llsc() +#define __smp_mb__after_atomic() smp_llsc_mb() #include -- 2.20.1