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From: Gregory Giguashvili <Gregoryg@ParadigmGeo.com>
To: "Linux Kernel (E-mail)" <linux-kernel@vger.kernel.org>
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
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