Messages in this thread | | | From | Gregory Giguashvili <> | Subject | RE: Atomic operations | Date | Tue, 4 Jun 2002 11:23:28 +0200 |
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Hello,
Thanks a lot for your help to all of you...
The last thing, I want to make sure of, is that the following type of code:
int atomic_xadd(int i, atomic_t *v) { int ret; __asm__(LOCK "xaddl %1,%0" : "=m" (v->counter), "=r" (ret) : "0" (v->counter), "1" (i)); return ret; }
is less efficient than this one:
int atomic_xadd(int i, atomic_t *v) { asm volatile(LOCK "xaddl %1,%0" : "+m" (v->counter), "+r" (i)); return i; }
The reason for it is that the first one is more easy to read (at least for me as a beginner).
Thanks again for your precious comments. Best, Giga - 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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