Messages in this thread Patch in this message | | | Date | Mon, 13 Aug 2007 07:21:05 -0400 | From | Chris Snook <> | Subject | [PATCH 9/23] make atomic_read() and atomic_set() behavior consistent on i386 |
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From: Chris Snook <csnook@redhat.com>
Use volatile consistently in atomic.h on i386.
Signed-off-by: Chris Snook <csnook@redhat.com>
--- linux-2.6.23-rc3-orig/include/asm-i386/atomic.h 2007-07-08 19:32:17.000000000 -0400 +++ linux-2.6.23-rc3/include/asm-i386/atomic.h 2007-08-13 05:31:45.000000000 -0400 @@ -25,7 +25,10 @@ typedef struct { int counter; } atomic_t * * Atomically reads the value of @v. */ -#define atomic_read(v) ((v)->counter) +static __inline__ int atomic_read(atomic_t *v) +{ + return *(volatile int *)&v->counter; +} /** * atomic_set - set atomic variable @@ -34,7 +37,10 @@ typedef struct { int counter; } atomic_t * * Atomically sets the value of @v to @i. */ -#define atomic_set(v,i) (((v)->counter) = (i)) +static __inline__ void atomic_set(atomic_t *v, int i) +{ + *(volatile int *)&v->counter = i; +} /** * atomic_add - add integer to 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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