Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762887AbXHOIke (ORCPT ); Wed, 15 Aug 2007 04:40:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756205AbXHOIkS (ORCPT ); Wed, 15 Aug 2007 04:40:18 -0400 Received: from rhun.apana.org.au ([64.62.148.172]:3328 "EHLO arnor.apana.org.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755249AbXHOIkQ (ORCPT ); Wed, 15 Aug 2007 04:40:16 -0400 From: Herbert Xu To: ak@suse.de (Andi Kleen) Subject: Re: [patch 1/2] i386: use asm() like the other atomic operations already do. Cc: sebastian@breakpoint.cc, linux-kernel@vger.kernel.org, ak@suse.de Organization: Core In-Reply-To: <20070815002034.GW3406@bingen.suse.de> X-Newsgroups: apana.lists.os.linux.kernel User-Agent: tin/1.7.4-20040225 ("Benbecula") (UNIX) (Linux/2.6.17-rc4 (i686)) Message-Id: Date: Wed, 15 Aug 2007 16:40:04 +0800 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1007 Lines: 25 Andi Kleen 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~} Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - 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/