Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755566Ab1BNRaU (ORCPT ); Mon, 14 Feb 2011 12:30:20 -0500 Received: from mail-yi0-f46.google.com ([209.85.218.46]:64146 "EHLO mail-yi0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751312Ab1BNRaR (ORCPT ); Mon, 14 Feb 2011 12:30:17 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:cc:content-type; b=S+ufTBUkKPJTl1EeGKIWmh7/5GdqMR0OkGM1Lp46S8QEWyDBbReK5G5a4Mptslvsh3 ya4j0twYbIwCCw/irOcTHcYaj95TB22nd0kPC0WwTDew4G4rEAm581VqBcOQRb9Nbbc+ zs/9yTOlvMzrjFkyRQkaI0fujtnDccPHIjMWQ= MIME-Version: 1.0 In-Reply-To: <1297704447.5226.127.camel@laptop> References: <1297452328.5226.89.camel@laptop> <1297460297.5226.99.camel@laptop> <1297536465.5226.108.camel@laptop> <20110214155113.GA2840@redhat.com> <1297699024.2401.12.camel@twins> <20110214160437.GB2840@redhat.com> <1297700754.5226.110.camel@laptop> <20110214162947.GA3449@redhat.com> <1297701438.5226.113.camel@laptop> <1297702013.23343.51.camel@gandalf.stny.rr.com> <1297703892.23343.71.camel@gandalf.stny.rr.com> <1297704447.5226.127.camel@laptop> From: Mike Frysinger Date: Mon, 14 Feb 2011 12:29:56 -0500 X-Google-Sender-Auth: IoNiXN2lQaRwSPifoM72VhQbCqQ Message-ID: Subject: Re: [PATCH 0/2] jump label: 2.6.38 updates To: Peter Zijlstra Cc: Steven Rostedt , Jason Baron , Mathieu Desnoyers , hpa@zytor.com, mingo@elte.hu, tglx@linutronix.de, andi@firstfloor.org, roland@redhat.com, rth@redhat.com, masami.hiramatsu.pt@hitachi.com, fweisbec@gmail.com, avi@redhat.com, davem@davemloft.net, sam@ravnborg.org, ddaney@caviumnetworks.com, michael@ellerman.id.au, linux-kernel@vger.kernel.org, Chris Metcalf , dhowells , Martin Schwidefsky , "heiko.carstens" , benh Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 818 Lines: 19 On Mon, Feb 14, 2011 at 12:27, Peter Zijlstra wrote: > On Mon, 2011-02-14 at 12:18 -0500, Steven Rostedt wrote: >> blackfin, seems to be doing quite a lot. Not sure if it is required, but >> that may need a bit of investigating to understand why it does the >> raw_uncached thing. > > From what I can tell its flushing its write cache, invalidating its > d-cache and then issue the read, something which is _way_ overboard. not when the cores in a SMP system lack cache coherency please to review: http://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like -mike -- 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/