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From: 杨硕 on 6 Apr 2010 01:20
static inline int atomic_sub_and_test(int i, atomic_t *v)
{
unsigned char c;

asm volatile(LOCK_PREFIX "subl %2,%0; sete %1"
: "+m" (v->counter), "=qm" (c)
: "ir" (i) : "memory");
return c;
}

TIA:)
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Prev: /dev/mem: Allow rewinding
Next: [PATCH] pl061: Trivial fix for offset value range checking