diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2015-12-21 09:22:18 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-01-12 20:46:51 +0200 |
| commit | fa083e28f89a78b95ba8b7da86db40c13c60e95d (patch) | |
| tree | 50609435543980f6e9754b72599ae8e9c1d7e089 /arch/mips | |
| parent | abe114d9f0a80f27bc5040cd2287dca80423d13e (diff) | |
mips: reuse asm-generic/barrier.h
On mips dma_rmb, dma_wmb, smp_store_mb, read_barrier_depends,
smp_read_barrier_depends, smp_store_release and smp_load_acquire match
the asm-generic variants exactly. Drop the local definitions and pull in
asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/barrier.h | 25 |
1 files changed, 2 insertions, 23 deletions
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h index 752e0b86c171..3eac4b909355 100644 --- a/arch/mips/include/asm/barrier.h +++ b/arch/mips/include/asm/barrier.h @@ -10,9 +10,6 @@ #include <asm/addrspace.h> -#define read_barrier_depends() do { } while(0) -#define smp_read_barrier_depends() do { } while(0) - #ifdef CONFIG_CPU_HAS_SYNC #define __sync() \ __asm__ __volatile__( \ @@ -87,8 +84,6 @@ #define wmb() fast_wmb() #define rmb() fast_rmb() -#define dma_wmb() fast_wmb() -#define dma_rmb() fast_rmb() #if defined(CONFIG_WEAK_ORDERING) && defined(CONFIG_SMP) # ifdef CONFIG_CPU_CAVIUM_OCTEON @@ -112,9 +107,6 @@ #define __WEAK_LLSC_MB " \n" #endif -#define smp_store_mb(var, value) \ - do { WRITE_ONCE(var, value); smp_mb(); } while (0) - #define smp_llsc_mb() __asm__ __volatile__(__WEAK_LLSC_MB : : :"memory") #ifdef CONFIG_CPU_CAVIUM_OCTEON @@ -129,22 +121,9 @@ #define nudge_writes() mb() #endif -#define smp_store_release(p, v) \ -do { \ - compiletime_assert_atomic_type(*p); \ - smp_mb(); \ - WRITE_ONCE(*p, v); \ -} while (0) - -#define smp_load_acquire(p) \ -({ \ - typeof(*p) ___p1 = READ_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() +#include <asm-generic/barrier.h> + #endif /* __ASM_BARRIER_H */ |