Messages in this thread Patch in this message | | | Date | Thu, 9 Aug 2007 10:00:04 -0400 | From | Chris Snook <> | Subject | [PATCH 13/24] make atomic_read() behave consistently on mips |
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From: Chris Snook <csnook@redhat.com>
Purify volatile use for atomic[64]_t on mips.
Signed-off-by: Chris Snook <csnook@redhat.com>
--- linux-2.6.23-rc2-orig/include/asm-mips/atomic.h 2007-08-08 17:48:53.000000000 -0400 +++ linux-2.6.23-rc2/include/asm-mips/atomic.h 2007-08-09 07:02:50.000000000 -0400 @@ -20,7 +20,7 @@ #include <asm/war.h> #include <asm/system.h> -typedef struct { volatile int counter; } atomic_t; +typedef struct { int counter; } atomic_t; #define ATOMIC_INIT(i) { (i) } @@ -30,7 +30,7 @@ typedef struct { volatile int counter; } * * Atomically reads the value of @v. */ -#define atomic_read(v) ((v)->counter) +#define atomic_read(v) (*(volatile int *)&(v)->counter) /* * atomic_set - set atomic variable @@ -404,7 +404,7 @@ static __inline__ int atomic_add_unless( #ifdef CONFIG_64BIT -typedef struct { volatile long counter; } atomic64_t; +typedef struct { long counter; } atomic64_t; #define ATOMIC64_INIT(i) { (i) } @@ -413,7 +413,7 @@ typedef struct { volatile long counter; * @v: pointer of type atomic64_t * */ -#define atomic64_read(v) ((v)->counter) +#define atomic64_read(v) (*(volatile long *)&(v)->counter) /* * atomic64_set - set atomic variable - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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