From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936521AbWLAQ1o (ORCPT ); Fri, 1 Dec 2006 11:27:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S936523AbWLAQ1o (ORCPT ); Fri, 1 Dec 2006 11:27:44 -0500 Received: from omx2-ext.sgi.com ([192.48.171.19]:40345 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S936521AbWLAQ1n (ORCPT ); Fri, 1 Dec 2006 11:27:43 -0500 Date: Fri, 1 Dec 2006 08:27:35 -0800 (PST) From: Christoph Lameter To: Paul Jackson cc: akpm@osdl.org, linux-kernel@vger.kernel.org Subject: Re: Avoid allocating during interleave from almost full nodes In-Reply-To: <20061130235117.018c3c70.pj@sgi.com> Message-ID: References: <20061103134633.a815c7b3.akpm@osdl.org> <20061103143145.85a9c63f.akpm@osdl.org> <20061103172605.e646352a.pj@sgi.com> <20061103174206.53f2c49e.akpm@osdl.org> <20061104025128.ca3c9859.pj@sgi.com> <20061130235117.018c3c70.pj@sgi.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 30 Nov 2006, Paul Jackson wrote: > Anybody have any idea which is the case? You can rely on those to increment and count events if it does not matter that we may miss an event once in a while. And I think that is the case here. The counters may only switched off for embedded systems. We could just remove the CONFIG option if necessary. The event counter operations are in critical paths of the VM though and I would think that embedded systems with no need for vmstat want those as efficient as possible.