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| author | Peter Zijlstra <peterz@infradead.org> | 2013-11-06 14:57:36 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-01-12 10:37:15 +0100 |
| commit | 93ea02bb84354370e51de803a9405f171f3edf88 (patch) | |
| tree | dc7c7719fdfe0aed36eae3c2b374ced951e62a4c /arch/xtensa | |
| parent | arch: Move smp_mb__{before,after}_atomic_{inc,dec}.h into asm/atomic.h (diff) | |
| download | linux-93ea02bb84354370e51de803a9405f171f3edf88.tar.xz linux-93ea02bb84354370e51de803a9405f171f3edf88.zip | |
arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h
We're going to be adding a few new barrier primitives, and in order to
avoid endless duplication make more agressive use of
asm-generic/barrier.h.
Change the asm-generic/barrier.h such that it allows partial barrier
definitions and fills out the rest with defaults.
There are a few architectures (m32r, m68k) that could probably
do away with their barrier.h file entirely but are kept for now due to
their unconventional nop() implementation.
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Victor Kaplansky <VICTORK@il.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/20131213150640.846368594@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/include/asm/barrier.h | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/arch/xtensa/include/asm/barrier.h b/arch/xtensa/include/asm/barrier.h index ef021677d536..e1ee6b51dfc5 100644 --- a/arch/xtensa/include/asm/barrier.h +++ b/arch/xtensa/include/asm/barrier.h @@ -9,21 +9,14 @@ #ifndef _XTENSA_SYSTEM_H #define _XTENSA_SYSTEM_H -#define smp_read_barrier_depends() do { } while(0) -#define read_barrier_depends() do { } while(0) - #define mb() ({ __asm__ __volatile__("memw" : : : "memory"); }) #define rmb() barrier() #define wmb() mb() #ifdef CONFIG_SMP #error smp_* not defined -#else -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() #endif -#define set_mb(var, value) do { var = value; mb(); } while (0) +#include <asm-generic/barrier.h> #endif /* _XTENSA_SYSTEM_H */ |