Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757808Ab1DZHZs (ORCPT ); Tue, 26 Apr 2011 03:25:48 -0400 Received: from casper.infradead.org ([85.118.1.10]:38140 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757557Ab1DZHZq convert rfc822-to-8bit (ORCPT ); Tue, 26 Apr 2011 03:25:46 -0400 Subject: Re: [PATCH 0/4] munmap: Flexible mem unmap operation interface for scheduling latency From: Peter Zijlstra To: Steven Rostedt Cc: Geunsik Lim , Ingo Molnar , Andrew Morton , Thomas Gleixner , "H. Peter Anvin" , Hugh Dickins , Darren Hart , linux-kernel , linux-rt-users In-Reply-To: <1303763393.18763.16.camel@gandalf.stny.rr.com> References: <1303728272-11408-1-git-send-email-leemgs1@gmail.com> <1303760837.4865.22.camel@laptop> <1303763393.18763.16.camel@gandalf.stny.rr.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Tue, 26 Apr 2011 09:25:20 +0200 Message-ID: <1303802720.20212.7.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 759 Lines: 18 On Mon, 2011-04-25 at 16:29 -0400, Steven Rostedt wrote: > On Mon, 2011-04-25 at 21:47 +0200, Peter Zijlstra wrote: > > > Also, -rt doesn't care since it already has preemptible mmu_gather. > > To be fair, he did state: > > > In general, This is not a critical latency-path on preemption mode > > (PREEMPT_VOLUNTARY / PREEMPT_DESKTOP / PREEMPT_RT) That doesn't parse for me... what does it say? The only one not listed is the non-preempt option, that wouldn't reschedule no matter what ZAP_BLOCK_SIZE. -- 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/