From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759181AbZHROWJ (ORCPT ); Tue, 18 Aug 2009 10:22:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752147AbZHROWI (ORCPT ); Tue, 18 Aug 2009 10:22:08 -0400 Received: from smtp3.ultrahosting.com ([74.213.175.254]:40653 "EHLO smtp.ultrahosting.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751476AbZHROWH (ORCPT ); Tue, 18 Aug 2009 10:22:07 -0400 Date: Tue, 18 Aug 2009 10:22:01 -0400 (EDT) From: Christoph Lameter X-X-Sender: cl@gentwo.org To: Mel Gorman cc: Linux Memory Management List , Nick Piggin , Linux Kernel Mailing List Subject: Re: [RFC PATCH 0/3] Reduce searching in the page allocator fast-path In-Reply-To: <1250594162-17322-1-git-send-email-mel@csn.ul.ie> Message-ID: References: <1250594162-17322-1-git-send-email-mel@csn.ul.ie> User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This could be combined with the per cpu ops patch that makes the page allocator use alloc_percpu for its per cpu data needs. That in turn would allow the use of per cpu atomics in the hot paths, maybe we can get to a point where we can drop the irq disable there.