From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with SMTP id DBC9F6B006A for ; Tue, 24 Nov 2009 02:13:25 -0500 (EST) Date: Tue, 24 Nov 2009 09:12:50 +0200 From: Gleb Natapov Subject: Re: [PATCH v2 10/12] Maintain preemptability count even for !CONFIG_PREEMPT kernels Message-ID: <20091124071250.GC2999@redhat.com> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org To: Christoph Lameter 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 List-ID: On Mon, Nov 23, 2009 at 11:30:02AM -0600, Christoph Lameter wrote: > This adds significant overhead for the !PREEMPT case adding lots of code > in critical paths all over the place. > > I want to measure it. Can you suggest benchmarks to try? -- Gleb. -- 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/ . Don't email: email@kvack.org