diff options
Diffstat (limited to 'arch/mips/include/asm/barrier.h')
| -rw-r--r-- | arch/mips/include/asm/barrier.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h index c0884f02d3a..d0101dd0575 100644 --- a/arch/mips/include/asm/barrier.h +++ b/arch/mips/include/asm/barrier.h @@ -8,6 +8,8 @@ #ifndef __ASM_BARRIER_H #define __ASM_BARRIER_H +#include <asm/addrspace.h> + /* * read_barrier_depends - Flush all pending reads that subsequents reads * depend on. @@ -90,7 +92,7 @@ : "memory") #ifdef CONFIG_CPU_CAVIUM_OCTEON # define OCTEON_SYNCW_STR ".set push\n.set arch=octeon\nsyncw\nsyncw\n.set pop\n" -# define __syncw() __asm__ __volatile__(OCTEON_SYNCW_STR : : : "memory") +# define __syncw() __asm__ __volatile__(OCTEON_SYNCW_STR : : : "memory") # define fast_wmb() __syncw() # define fast_rmb() barrier() @@ -156,7 +158,7 @@ #endif #if defined(CONFIG_WEAK_REORDERING_BEYOND_LLSC) && defined(CONFIG_SMP) -#define __WEAK_LLSC_MB " sync \n" +#define __WEAK_LLSC_MB " sync \n" #else #define __WEAK_LLSC_MB " \n" #endif @@ -178,4 +180,22 @@ #define nudge_writes() mb() #endif +#define smp_store_release(p, v) \ +do { \ + compiletime_assert_atomic_type(*p); \ + smp_mb(); \ + ACCESS_ONCE(*p) = (v); \ +} while (0) + +#define smp_load_acquire(p) \ +({ \ + typeof(*p) ___p1 = ACCESS_ONCE(*p); \ + compiletime_assert_atomic_type(*p); \ + smp_mb(); \ + ___p1; \ +}) + +#define smp_mb__before_atomic() smp_mb__before_llsc() +#define smp_mb__after_atomic() smp_llsc_mb() + #endif /* __ASM_BARRIER_H */ |