From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx188.postini.com [74.125.245.188]) by kanga.kvack.org (Postfix) with SMTP id CC0D06B004F for ; Thu, 26 Jan 2012 10:20:06 -0500 (EST) Message-ID: <1327591185.2446.102.camel@twins> Subject: Re: [v7 0/8] Reduce cross CPU IPI interference From: Peter Zijlstra Date: Thu, 26 Jan 2012 16:19:45 +0100 In-Reply-To: <1327572121-13673-1-git-send-email-gilad@benyossef.com> References: <1327572121-13673-1-git-send-email-gilad@benyossef.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: Gilad Ben-Yossef Cc: linux-kernel@vger.kernel.org, Christoph Lameter , Chris Metcalf , Frederic Weisbecker , linux-mm@kvack.org, Pekka Enberg , Matt Mackall , Sasha Levin , Rik van Riel , Andi Kleen , Mel Gorman , Andrew Morton , Alexander Viro , Avi Kivity , Michal Nazarewicz , Kosaki Motohiro , Milton Miller On Thu, 2012-01-26 at 12:01 +0200, Gilad Ben-Yossef wrote: > Gilad Ben-Yossef (8): > smp: introduce a generic on_each_cpu_mask function > arm: move arm over to generic on_each_cpu_mask > tile: move tile to use generic on_each_cpu_mask > smp: add func to IPI cpus based on parameter func > slub: only IPI CPUs that have per cpu obj to flush > fs: only send IPI to invalidate LRU BH when needed > mm: only IPI CPUs to drain local pages if they exist These patches look very nice! Acked-by: Peter Zijlstra > mm: add vmstat counters for tracking PCP drains >=20 I understood from previous postings this patch wasn't meant for inclusion, if it is, note that cpumask_weight() is a potentially very expensive operation. -- 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