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Message-Id: <E1ILEQ8-0005H5-00@gondolin.me.apana.org.au>
Date: Wed, 15 Aug 2007 16:40:04 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: ak@...e.de (Andi Kleen)
Cc: sebastian@...akpoint.cc, linux-kernel@...r.kernel.org, ak@...e.de
Subject: Re: [patch 1/2] i386: use asm() like the other atomic operations already do.
Andi Kleen <ak@...e.de> wrote:
>> My config with march=pentium-m and gcc (GCC) 4.1.2 (Gentoo 4.1.2):
>> text data bss dec hex filename
>> 3434150 249176 176128 3859454 3ae3fe atomic_normal/vmlinux
>> 3435308 249176 176128 3860612 3ae884 atomic_inlineasm/vmlinux
>
> What is the difference between atomic_normal and atomic_inlineasm?
The inline asm stops certain optimisations from occuring.
I'm still unconvinced why we need this because nobody has
brought up any examples of kernel code that legitimately
need this.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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