From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 318A4C433DF for ; Mon, 25 May 2020 03:27:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 139B4207DA for ; Mon, 25 May 2020 03:27:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590377240; bh=8e3jh3bZdGATOCnKBrKDXIxxoT45/hVK4lQxxIz2yY0=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:List-ID: From; b=OH9IXeDG/KlO3U/A4s32zYsLjXbLVJoATTIvKtQuyCYqCVekmYqW6szdg71IFKaKw FgvMedxjYK/0rIXNIwxegmhd2qIej/PeykHIAhTe7p5G5JjhdFS9Nk3XaTAIOra/bG Zrp/B0HWrpYRzQZZekuv72B9dR+Qe4JFrcZmPtm0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388786AbgEYD1T (ORCPT ); Sun, 24 May 2020 23:27:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:46384 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388466AbgEYD1S (ORCPT ); Sun, 24 May 2020 23:27:18 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 282C72073B; Mon, 25 May 2020 03:27:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590377238; bh=8e3jh3bZdGATOCnKBrKDXIxxoT45/hVK4lQxxIz2yY0=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=xY45brw2iaBl1vMDI1prK92l6gDN9y5D9qgXIdA2mnNIZg2oeadMb4vAtnmplbRLF kszKYSUehId2+43wb+xRanEklEO1o3eG1ZTFobssgQ+tvQJFTs02/XJ4TYT8RqwEJe kslDhIUa2fqUqq7U0WCFhMRwJQVR2xpwbGTW0SMw= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id 056413522681; Sun, 24 May 2020 20:27:18 -0700 (PDT) Date: Sun, 24 May 2020 20:27:17 -0700 From: "Paul E. McKenney" To: Sebastian Andrzej Siewior Cc: Peter Zijlstra , linux-kernel@vger.kernel.org, Ingo Molnar , Steven Rostedt , Will Deacon , Thomas Gleixner , Linus Torvalds , Lai Jiangshan , Josh Triplett , Mathieu Desnoyers , rcu@vger.kernel.org Subject: Re: [PATCH 3/8] srcu: Use local_lock() for per-CPU struct srcu_data access Message-ID: <20200525032717.GV2869@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org References: <20200519201912.1564477-1-bigeasy@linutronix.de> <20200519201912.1564477-4-bigeasy@linutronix.de> <20200520102407.GF317569@hirez.programming.kicks-ass.net> <20200520120608.mwros5jurmidxxfv@linutronix.de> <20200520184345.GU2869@paulmck-ThinkPad-P72> <20200522151255.rtqnuk2cl3dpruou@linutronix.de> <20200522173953.GI2869@paulmck-ThinkPad-P72> <20200523150831.wdrthklakwm6wago@linutronix.de> <20200524190356.eqohmrmbilonm4u7@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200524190356.eqohmrmbilonm4u7@linutronix.de> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, May 24, 2020 at 09:03:56PM +0200, Sebastian Andrzej Siewior wrote: > On 2020-05-23 17:08:32 [+0200], To Paul E. McKenney wrote: > > On 2020-05-22 10:39:53 [-0700], Paul E. McKenney wrote: > > > It looks good to me, but I have not yet tested it. (Happy to let you > > > take the first crack at rcutorture in any case, scenarios SRCU-P and > > > SRCU-N.) > > > > on it. > > |tools/testing/selftests/rcutorture/bin/kvm.sh --cpus 32 --duration 240 --configs 8*SRCU-N > |SRCU-N ------- 2127126 GPs (147.717/s) [srcu: g26566592 f0x0 ] > |SRCU-N.2 ------- 2123520 GPs (147.467/s) [srcu: g26563696 f0x0 ] > |SRCU-N.3 ------- 2122181 GPs (147.374/s) [srcu: g26549140 f0x0 ] > |SRCU-N.4 ------- 2126099 GPs (147.646/s) [srcu: g26564232 f0x0 ] > |SRCU-N.5 ------- 2127107 GPs (147.716/s) [srcu: g26590168 f0x0 ] > |SRCU-N.6 ------- 2125489 GPs (147.603/s) [srcu: g26545616 f0x0 ] > |SRCU-N.7 ------- 2128308 GPs (147.799/s) [srcu: g26591524 f0x0 ] > |SRCU-N.8 ------- 2126432 GPs (147.669/s) [srcu: g26586816 f0x0 ] > | > |tools/testing/selftests/rcutorture/bin/kvm.sh --cpus 32 --duration 240 --configs 8*SRCU-P > |SRCU-P ------- 565751 GPs (39.2883/s) [srcud: g5034676 f0x0 ] > |SRCU-P.2 ------- 569508 GPs (39.5492/s) [srcud: g5062872 f0x0 ] > |SRCU-P.3 ------- 574240 GPs (39.8778/s) [srcud: g5098488 f0x0 ] > |SRCU-P.4 ------- 564376 GPs (39.1928/s) [srcud: g5031244 f0x0 ] > |SRCU-P.5 ------- 563705 GPs (39.1462/s) [srcud: g5024720 f0x0 ] > |SRCU-P.6 ------- 565043 GPs (39.2391/s) [srcud: g5030272 f0x0 ] > |SRCU-P.7 ------- 567450 GPs (39.4062/s) [srcud: g5046392 f0x0 ] > |SRCU-P.8 ------- 566496 GPs (39.34/s) [srcud: g5039396 f0x0 ] > > Results at > https://breakpoint.cc/res.tar.xz Looks good, thank you! Thanx, Paul