From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with SMTP id 0E7E36B0169 for ; Thu, 25 Aug 2011 14:46:31 -0400 (EDT) Date: Thu, 25 Aug 2011 13:46:27 -0500 (CDT) From: Christoph Lameter Subject: Re: [PATCH] memcg: remove unneeded preempt_disable In-Reply-To: <1e295500-5d1f-45dd-aa5b-3d2da2cf1a62@email.android.com> Message-ID: References: <1313650253-21794-1-git-send-email-gthelen@google.com> <20110818144025.8e122a67.akpm@linux-foundation.org> <1314284272.27911.32.camel@twins> <1314289208.3268.4.camel@mulgrave> <986ca4ed-6810-426f-b32f-5c8687e3a10b@email.android.com> <1e295500-5d1f-45dd-aa5b-3d2da2cf1a62@email.android.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: James Bottomley Cc: Peter Zijlstra , Andrew Morton , Greg Thelen , linux-kernel@vger.kernel.org, linux-mm@kvack.org, KAMEZAWA Hiroyuki , Balbir Singh , Daisuke Nishimura , linux-arch@vger.kernel.org On Thu, 25 Aug 2011, James Bottomley wrote: > >Well then what is "really risc"? RISC is an old beaten down marketing > >term > >AFAICT and ARM claims it too. > > Reduced Instruction Set Computer. This is why we're unlikely to have > complex atomic instructions: the principle of risc is that you build > them up from basic ones. RISC cpus have instruction to construct complex atomic actions by the cpu as I have shown before for ARM. Principles always have exceptions to them. (That statement in itself is a principle that should have an exception I guess. But then language often only makes sense when it contains contradictions.) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org