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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E33E2CD80A9 for ; Tue, 10 Oct 2023 11:23:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231391AbjJJLXH (ORCPT ); Tue, 10 Oct 2023 07:23:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230223AbjJJLXF (ORCPT ); Tue, 10 Oct 2023 07:23:05 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C5E1693; Tue, 10 Oct 2023 04:23:04 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D5F8C433C8; Tue, 10 Oct 2023 11:23:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1696936984; bh=1J6gu5kW3DbwI0FpSQCZzBm2PXMVcfvVI3Q0lV4Dx/k=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=LCSu6UorJ3VPK8eWT5ib55ErSdXVFUMr7d8PchJY0pog7nVRnIdZ9thT82fXx8kGU zIWLzBtO20IgurmylvCzNvm2kkFMhxqp442I4UmnP+Wm2t1yoaekQWwDcqPXposarG 151VThtzPUSToFy1y2jgLVJNt7BTmax4pWAnlRVou5ROVV0Z8uCVpB4eHxHnjQfZjl cBkJqhadxtEFXN5TN51MCIzUstTBtM96sLW0Luy1VLpNGVMi3BAL0uLzJRnqEzrkWW 4YOTCSLOw8uXAJ4D6r+gs4kxUf17PplZaCZBNKK/NwCCHYfi157ghffopJYnIAPPne tho5ApmlaGzHw== Date: Tue, 10 Oct 2023 13:23:01 +0200 From: Frederic Weisbecker To: "Paul E. McKenney" Cc: LKML , Yong He , Neeraj upadhyay , Joel Fernandes , Boqun Feng , Uladzislau Rezki , RCU Subject: Re: [PATCH 0/5] srcu fixes Message-ID: References: <20231003232903.7109-1-frederic@kernel.org> <1d21ceee-56d3-4784-9e6f-0a766c773833@paulmck-laptop> <811d08e3-efb8-4398-8fbc-6b5d030afb15@paulmck-laptop> <77322b72-1d95-46c6-9837-1d811b36336c@paulmck-laptop> <02d3ae63-8e52-4931-acf6-32ef69a6511a@paulmck-laptop> <5a37a92f-2f3c-467a-83db-b2e2df22557b@paulmck-laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <5a37a92f-2f3c-467a-83db-b2e2df22557b@paulmck-laptop> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 05, 2023 at 09:54:12AM -0700, Paul E. McKenney wrote: > On Wed, Oct 04, 2023 at 02:54:57PM -0700, Paul E. McKenney wrote: > > On Wed, Oct 04, 2023 at 11:27:29PM +0200, Frederic Weisbecker wrote: > > > Le Wed, Oct 04, 2023 at 09:47:04AM -0700, Paul E. McKenney a écrit : > > > > > The 10-hour 40-CPU SRCU-P run and pair of 10-hour 16-CPU SRCU-N runs > > > > > completed without failure. The others had some failures, but I need > > > > > to look and see if any were unexpected. In the meantime, I started a > > > > > two-hour 40-CPU SRCU-P run and a pair of one-hour 16-CPU SRCU-N runs on > > > > > just that first commit. Also servicing SIGSHOWER and SIGFOOD. ;-) > > > > > > > > And the two-hour 40-CPU SRCU-P run and a pair of two-hour 16-CPU SRCU-N > > > > runs (on only the first commit) completed without incident. > > > > > > > > The other set of overnight full-stack runs had only tick-stop errors, > > > > so I started a two-hour set on the first commit. > > > > > > > > So far so good! > > > > > > Very nice! > > > > > > As for the tick-stop error, see the upstream fix: > > > > > > 1a6a46477494 ("timers: Tag (hr)timer softirq as hotplug safe") > > > > Got it, thank you! > > > > And the two-hour set of 200*SRCU-N and 100*SRCU-P had only tick-stop > > errors. I am refreshing the test grid, and will run overnight. > > And the ten-hour test passed with only the tick-stop errors, representing > 2000 hours of SRCU-N and 1000 hours of SRCU-P. (I ran the exact same > stack, without the rebased fix you call out above.) Thanks a lot!