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=-4.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 46F40C4338F for ; Wed, 18 Aug 2021 17:56:55 +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 0D426610FE for ; Wed, 18 Aug 2021 17:56:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 0D426610FE 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=FzEmqdjKinWQR1VDC19QK5RH4IuwOyj9NEjRiCHhhtQ=; b=E7hUI/3qxzNush GtJ7Jb0z3aWvr5zz8Scb6+jwpdfz+WMxVp2BpNFtZx/rTnEKXrPO4UgqzWgu+g4QR754sp8bNpYjR 0qd+VZrX/KlkkpyYBxEt/Rupk+CNeHMt/E/wGNyK2HHk19DGQCR0VC2If6fWowWqjHgc1qK1jM1gj eD0noXhb/Q1HN8SpcZhKZWsphqRrBKLTLrnUJZ4g3Y8EqhGZcHXrZfrk21Pc8S7cQ5Rvt81KLpF9c m4uKSvCOEBjrQCVarVIHmSDTTCKByhvRa0uL+yx0g3T8VaivKAhKg8Fkcpz1o2OCPXiJoPo5M8sp0 JZmc98jAqynPsA94AqHw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mGPnP-006L5M-BQ; Wed, 18 Aug 2021 17:56:11 +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 1mGPnJ-006L4m-5x for ath10k@lists.infradead.org; Wed, 18 Aug 2021 17:56:09 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id CB7E860BD3; Wed, 18 Aug 2021 17:56:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629309364; bh=ns87ZPMySq8WJH44cZI5SX1ALtCXNHOELDCw7jSyjZ4=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=PCg1bptqI2Ma+CkzoivGb5Z2S97z2uMV1ZU8bm+5DOHVoAMsi2TraehFbG05hAe0K kOuSh+NH49M+0T+J4J4kKSG2e9IR2qyqXagUpy6asQotA8dZ5AfcMGeekhxkGnXVED Eghnx692f0QVe12V1jThlDNB9VOwj8mUTphqVY7p+sqyi4BONNJEdVGz2/auf3055v yDp75/zHKw4Jt4vbTwRSgJ48rx1mOXU9+nMjEQoDgU9q9AMgu3SqpykUziO8i5w7Ok ZUp/R/Y5qUsFwBnPLWKOA/9sWwCqwV5BZWYc6iJj4SWaaEKDJhQF5rvBY4RfZFTMio u+YiT+/rbo4Cg== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 9A8DE5C04B1; Wed, 18 Aug 2021 10:56:04 -0700 (PDT) Date: Wed, 18 Aug 2021 10:56:04 -0700 From: "Paul E. McKenney" To: Fabio Estevam Cc: Kalle Valo , ath10k@lists.infradead.org, linux-mmc , Ulf Hansson , Marek Vasut , qais.yousef@arm.com, frederic@kernel.org, tglx@linutronix.de Subject: Re: NOHZ tick-stop error with ath10k SDIO Message-ID: <20210818175604.GX4126399@paulmck-ThinkPad-P17-Gen-1> References: <20210818154358.GS4126399@paulmck-ThinkPad-P17-Gen-1> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210818_105605_286232_7AA0FCE7 X-CRM114-Status: GOOD ( 17.57 ) 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 Wed, Aug 18, 2021 at 02:02:17PM -0300, Fabio Estevam wrote: > Hi Paul, > > On Wed, Aug 18, 2021 at 1:29 PM Fabio Estevam wrote: > > > > Hi Paul, > > > > 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. Adding Frederic and Thomas on CC, though I believe Frederic is off the grid at the moment. Thanx, Paul _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k