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| author | Michael S. Tsirkin | 2015-12-21 08:22:18 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin | 2016-01-12 19:46:48 +0100 |
| commit | fbd7ec02363cee4264aca2cc46692c9322fd6b42 (patch) | |
| tree | 5b85c14b8492eb1c72d3c50c3cb97eee77bb52d9 | |
| parent | ia64: reuse asm-generic/barrier.h (diff) | |
| download | kernel-qcow2-linux-fbd7ec02363cee4264aca2cc46692c9322fd6b42.tar.gz kernel-qcow2-linux-fbd7ec02363cee4264aca2cc46692c9322fd6b42.tar.xz kernel-qcow2-linux-fbd7ec02363cee4264aca2cc46692c9322fd6b42.zip | |
powerpc: reuse asm-generic/barrier.h
On powerpc read_barrier_depends, smp_read_barrier_depends
smp_store_mb(), smp_mb__before_atomic and smp_mb__after_atomic 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>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| -rw-r--r-- | arch/powerpc/include/asm/barrier.h | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h index a7af5fb7b914..980ad0cbdccf 100644 --- a/arch/powerpc/include/asm/barrier.h +++ b/arch/powerpc/include/asm/barrier.h @@ -34,8 +34,6 @@ #define rmb() __asm__ __volatile__ ("sync" : : : "memory") #define wmb() __asm__ __volatile__ ("sync" : : : "memory") -#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } while (0) - #ifdef __SUBARCH_HAS_LWSYNC # define SMPWMB LWSYNC #else @@ -60,9 +58,6 @@ #define smp_wmb() barrier() #endif /* CONFIG_SMP */ -#define read_barrier_depends() do { } while (0) -#define smp_read_barrier_depends() do { } while (0) - /* * This is a barrier which prevents following instructions from being * started until the value of the argument x is known. For example, if @@ -87,8 +82,8 @@ do { \ ___p1; \ }) -#define smp_mb__before_atomic() smp_mb() -#define smp_mb__after_atomic() smp_mb() #define smp_mb__before_spinlock() smp_mb() +#include <asm-generic/barrier.h> + #endif /* _ASM_POWERPC_BARRIER_H */ |