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=-4.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 CB32BC433EF for ; Thu, 2 Sep 2021 22:09:45 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 95E7260FA0 for ; Thu, 2 Sep 2021 22:09:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 95E7260FA0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=nHS3AsGLJdh/g9m7pkdDpKgBhHj4zYW14v8gO8TVy7M=; b=VMPFN6inHSRBvU iw0tafPYwNB5a6FR7tTBmxJ8mhytcJRK1uDONVxgDTWktg5U5lvWGbrdToUqKT69fvqGX0HDM5ill eNn5kR8HOjX3yzhQ6IdQ6pS18x6Lfwj7KfHMYYf4k9D3ftsQ24zeJmJywgRwxQvPNO4VrFqRCAU4S 8Bf+cDvLquwListE5ABFBlIj1R5/EO0cBLlMNW0vSNUFqMTPCNQoLz92jo/LuYUXtFJFTzmsGzCYY nXcXWvOpmLNUUJrml6mOWuz0tsLwK+Yfc0jpP5YxoHk45u6/ko142ccemDzdRQvnvHTIcAkZliXbj 99aurfznugmqSJofHO/g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLutv-00Aait-R9; Thu, 02 Sep 2021 22:09:39 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLutt-00Aahx-Me for ath10k@lists.infradead.org; Thu, 02 Sep 2021 22:09:39 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id AE29461054; Thu, 2 Sep 2021 22:09:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1630620576; bh=JozAychQdkZVheZRC5cWwi/+T0d8FJXICvfkY3V5oBo=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=V18ES6DFquE+5t+YhDz0yzC6zzNDXLTYF6EgHK2ATVlk+veX4/c6KdnZTZ7V2LnJQ 3X9w24jn6s1G7nFufYQkAwX/2ptNxeFSYcydLe/4C+uAUlsSpy4rDJ45i0uHkznM91 O0McyUB9SO2VWoGzlNH9fTdo5za96C4beesNag3wCRsdYpS1LOz9JTVMJX0QX3n5bu h5OYLFNT2n8N5tX4SHoGg+ObyL98YrRsGRNSQHciSWPfVZpC1evKe/LNiiMfYawTfR pru+bG93l9pdIqw9NVVwwweRAt+7Ea38M7Uvkg6cSLznZYzhOa9ONfGbYrKIBlDpF9 AGgJVOkS67EdQ== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 7DD615C0E58; Thu, 2 Sep 2021 15:09:36 -0700 (PDT) Date: Thu, 2 Sep 2021 15:09:36 -0700 From: "Paul E. McKenney" To: Thomas Gleixner Cc: Fabio Estevam , Kalle Valo , ath10k@lists.infradead.org, linux-mmc , Ulf Hansson , Marek Vasut , qais.yousef@arm.com, frederic@kernel.org Subject: Re: NOHZ tick-stop error with ath10k SDIO Message-ID: <20210902220936.GP4156@paulmck-ThinkPad-P17-Gen-1> References: <20210818154358.GS4126399@paulmck-ThinkPad-P17-Gen-1> <20210818175604.GX4126399@paulmck-ThinkPad-P17-Gen-1> <87czpqbq98.ffs@tglx> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <87czpqbq98.ffs@tglx> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210902_150937_831801_EBBE350E X-CRM114-Status: GOOD ( 21.83 ) X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: paulmck@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+ath10k=archiver.kernel.org@lists.infradead.org On Thu, Sep 02, 2021 at 11:51:15PM +0200, Thomas Gleixner wrote: > Paul, > > On Wed, Aug 18 2021 at 10:56, Paul E. McKenney wrote: > > On Wed, Aug 18, 2021 at 02:02:17PM -0300, Fabio Estevam wrote: > >> On Wed, Aug 18, 2021 at 1:29 PM Fabio Estevam wrote: > >> > On Wed, Aug 18, 2021 at 12:43 PM Paul E. McKenney wrote: > >> > > >> > > I believe that you need this commit (and possibly some prerequsites): > >> > > > >> > > 47c218dcae65 ("tick/sched: Prevent false positive softirq pending warnings on RT") > >> > > > >> > > Adding Qais on CC for his thoughts. > >> > > >> > Thanks for the suggestion, but I am running 5.13.11, which already > >> > contains this commit. > >> > > >> > Any extra logs I should capture to help us understand the problem? > >> > >> In case it helps, I followed your suggestion from: > >> https://lkml.org/lkml/2020/12/10/676 > >> > >> With the debug patch and suggested command line, I get the following log: > >> https://pastebin.com/raw/X96zKw7i > > > > And it turns out that I am also seeing it in v5.14-rc2, just a lot less > > frequently than earlier. I have seen three instances of handler #02 > > (NET_TX_SOFTIRQ?) over the past month or so while you are seeing handler > > #08 (BLOCK_SOFTIRQ?), in case that makes a difference. > > Huch? #02 is TIMER_SOFTIRQ and #08 is NET_TX_SOFTIRQ. Idiot here was forgetting that the #02 represents bit 1 (as you say, TIMER_SOFTIRQ) rather than numeral 2. Ditto for the #08. :-/ Thanx, Paul _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k