From owner-freebsd-hackers@FreeBSD.ORG Thu Sep 20 13:14:19 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8CE9D106566C; Thu, 20 Sep 2012 13:14:19 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from mail-lb0-f182.google.com (mail-lb0-f182.google.com [209.85.217.182]) by mx1.freebsd.org (Postfix) with ESMTP id A21EB8FC0A; Thu, 20 Sep 2012 13:14:18 +0000 (UTC) Received: by lbbgg13 with SMTP id gg13so2950698lbb.13 for ; Thu, 20 Sep 2012 06:14:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:reply-to:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=bPNnhfa5j2bz1KdmbKwvkFBS72OqgdBuUXgMmvswLE0=; b=QEpi8QAH7EQYFOgm8ZUmJWptnv5qosfAbOt0UZOqvYNpGIOAgsunOtactH0F1Sw97Z ifGVRZfpj0lkz2o1V1eCp4dpdQ+hNyZwnBzQrPp0dv02gBTYGRv19gqp3MORnE8moqwH 6+KPCLLalhWtftzhEyxZyqr+JMxIxAa83IbVP8Md28hHOF8u6n3tj3sK9/cChHTF5+Bz TFzrZ1tDObvQWgRv5Egf22s2SjCuioxL49MvxkvLeC5IZ97kAN5qatBs92cU11p9achU lomTcNDxuSiSftoWiH3kt9VpH7yM0KI8N+foIrSuJnNHDvArifyS3jFYr7TqwrS8oh9l l4XQ== MIME-Version: 1.0 Received: by 10.152.48.70 with SMTP id j6mr1528437lan.57.1348146857253; Thu, 20 Sep 2012 06:14:17 -0700 (PDT) Sender: asmrookie@gmail.com Received: by 10.112.102.39 with HTTP; Thu, 20 Sep 2012 06:14:17 -0700 (PDT) In-Reply-To: <505AF836.7050004@FreeBSD.org> References: <50587F8D.9060102@FreeBSD.org> <5058C68B.1010508@FreeBSD.org> <50596019.5060708@FreeBSD.org> <505AF836.7050004@FreeBSD.org> Date: Thu, 20 Sep 2012 14:14:17 +0100 X-Google-Sender-Auth: 9Tr5aVE4dcxTk6K0PSfjeUkBu3w Message-ID: From: Attilio Rao To: Andriy Gapon Content-Type: text/plain; charset=UTF-8 Cc: freebsd-hackers , Jeff Roberson Subject: Re: ule+smp: small optimization for turnstile priority lending X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: attilio@FreeBSD.org List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Sep 2012 13:14:19 -0000 On 9/20/12, Andriy Gapon wrote: > on 19/09/2012 10:33 Attilio Rao said the following: >> It is hard for me to tell if this is subject to same issues because I >> do not entirely understand where the locking was happening in your >> patch. >> Can you try testing this with your already KTR instrumented test and >> possibly report? > > The patch works well as far as I can tell. Thank you! > There is one warning with full witness enables but it appears to be harmless > (so > far): Andiy, thanks a lot for your testing and reports you made so far. Unfortunately I'm going off for 2 weeks now and I won't work on FreeBSD for that timeframe. I will get back to those in 2 weeks then. If you want to play more with this idea feel free to extend/fix/etc. this patch. Attilio -- Peace can only be achieved by understanding - A. Einstein