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add memory barrier

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This commit is contained in:
Stefan Lankes 2011-07-21 19:15:48 +02:00
parent ab37b024b0
commit dd9ddbca46
1 changed files with 1 additions and 1 deletions
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arch/x86/include/asm/atomic.h
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@ -88,7 +88,7 @@ inline static int32_t atomic_int32_test_and_set(atomic_int32_t* d, int32_t ret)
inline static int32_t atomic_int32_add(atomic_int32_t *d, int32_t i)
{
int32_t res = i;
asm volatile(LOCK "xaddl %0, %1" : "=r"(i) : "m"(d->counter), "0"(i));
asm volatile(LOCK "xaddl %0, %1" : "=r"(i) : "m"(d->counter), "0"(i) : "memory");
return res+i;
}