From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with ESMTP id 1E5656B00B2 for ; Wed, 23 Nov 2011 01:52:34 -0500 (EST) Received: by yenm12 with SMTP id m12so1418610yen.14 for ; Tue, 22 Nov 2011 22:52:31 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <4ECC4E1B.9050405@tilera.com> References: <1321960128-15191-1-git-send-email-gilad@benyossef.com> <4ECC4E1B.9050405@tilera.com> Date: Wed, 23 Nov 2011 08:52:31 +0200 Message-ID: Subject: Re: [PATCH v4 0/5] Reduce cross CPU IPI interference From: Gilad Ben-Yossef Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Chris Metcalf Cc: linux-kernel@vger.kernel.org, Christoph Lameter , Peter Zijlstra , Frederic Weisbecker , Russell King , linux-mm@kvack.org, Pekka Enberg , Matt Mackall , Sasha Levin , Rik van Riel , Andi Kleen Hi On Wed, Nov 23, 2011 at 3:36 AM, Chris Metcalf wrote: > On 11/22/2011 6:08 AM, Gilad Ben-Yossef wrote: >> We have lots of infrastructure in place to partition a multi-core system= such that we have a group of CPUs that are dedicated to > > Acked-by: Chris Metcalf > > I think this kind of work is very important as more and more processing > moves to isolated cpus that need protection from miscellaneous kernel > interrupts. =A0Keep at it! :-) Thank you very much. I believe it also has some small contribution to keeping idle CPUs idle in a multi-core system. I consider this my personal carbon offset effort :-) My current plan is to take a look at each invocation of on_each_cpu in core kernel code and see if it makes sense to give it a similar treatment. Thanks, Gilad --=20 Gilad Ben-Yossef Chief Coffee Drinker gilad@benyossef.com Israel Cell: +972-52-8260388 US Cell: +1-973-8260388 http://benyossef.com "Unfortunately, cache misses are an equal opportunity pain provider." -- Mike Galbraith, LKML -- 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