Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753285AbZKWRar (ORCPT ); Mon, 23 Nov 2009 12:30:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752674AbZKWRaq (ORCPT ); Mon, 23 Nov 2009 12:30:46 -0500 Received: from nlpi157.sbcis.sbc.com ([207.115.36.171]:50900 "EHLO nlpi157.prodigy.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751556AbZKWRaq (ORCPT ); Mon, 23 Nov 2009 12:30:46 -0500 Date: Mon, 23 Nov 2009 11:30:02 -0600 (CST) From: Christoph Lameter X-X-Sender: cl@router.home To: Gleb Natapov cc: Peter Zijlstra , kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, avi@redhat.com, mingo@elte.hu, tglx@linutronix.de, hpa@zytor.com, riel@redhat.com Subject: Re: [PATCH v2 10/12] Maintain preemptability count even for !CONFIG_PREEMPT kernels In-Reply-To: <20091123155851.GU2999@redhat.com> Message-ID: References: <1258985167-29178-1-git-send-email-gleb@redhat.com> <1258985167-29178-11-git-send-email-gleb@redhat.com> <1258990455.4531.594.camel@laptop> <20091123155851.GU2999@redhat.com> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) 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 Content-Length: 358 Lines: 9 This adds significant overhead for the !PREEMPT case adding lots of code in critical paths all over the place. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/