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[PATCH] ARM SMP: Add ARMv6 memory barriers

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Convert explicit gcc asm-based memory barriers into smp_mb() calls.
These change between barrier() and the ARMv6 data memory barrier
instruction depending on whether ARMv6 SMP is enabled.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2005-07-26 19:44:26 +01:00
committed by Russell King
parent 9560782f9a
commit 6d9b37a3a8
4 changed files with 67 additions and 27 deletions
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4
include/asm-arm/bitops.h
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@@ -21,8 +21,8 @@
#include <asm/system.h>
#define smp_mb__before_clear_bit() do { } while (0)
#define smp_mb__after_clear_bit() do { } while (0)
#define smp_mb__before_clear_bit() mb()
#define smp_mb__after_clear_bit() mb()
/*
* These functions are the basis of our bit ops.