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=-4.0 required=3.0 tests=BAYES_00,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 B9620C71156 for ; Wed, 2 Dec 2020 18:32:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C7CE2224A for ; Wed, 2 Dec 2020 18:32:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389223AbgLBScP (ORCPT ); Wed, 2 Dec 2020 13:32:15 -0500 Received: from mail-ot1-f51.google.com ([209.85.210.51]:36258 "EHLO mail-ot1-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729032AbgLBScO (ORCPT ); Wed, 2 Dec 2020 13:32:14 -0500 Received: by mail-ot1-f51.google.com with SMTP id y24so2565115otk.3; Wed, 02 Dec 2020 10:31:59 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=B4i9VFRUD3xARLzYQEJLNB6JhqamFut8iCJ5lNpUlk4=; b=iYEerzja10ZQZBFr4aeAtdJwMq8T6CEiRCZQmgbpdOKYkmL7c9QT5ydgasOnWyRSUD TLm4xZ5pqJx6g3DAWBmBCGJaukgCYMRExm4gR93XN8T8xp3epZpwg2elGWJJBRpzGnHE 7o7h47DLAhuh+USumGlFdOVYmio3mX8kgdJn6CC3Eyo3eibNsKZu2s5ghSj5u0RSHCEH CEAGHM72ELT6TejXuJLVEWK+R37n7YqaxEImurO0ORy3dOtLe8ZuobFKBjym+UcewL4S HJVRCtxC1VADpEoRdy4lMXKfCztdAq7QQ6sxW7aZyXvIAcL4WcFeGRkBRAwsYL+doo0Q xUjA== X-Gm-Message-State: AOAM5304FLkz2YyJmxl0tBvrjOOxUYaWL/5WrWnsPBThMnNsJZgk2z4C hATrUPso/+mGPKGWftnLMQh7q3b+34s8IMJk4PE= X-Google-Smtp-Source: ABdhPJxpvRp8VsnzKDL27mVBm4pcDuSz96iERvdj7q3h3vU8KuTGbZbDzV61PT2USI8W+btbuSQjQw8l/wqoA9qDaTM= X-Received: by 2002:a9d:745a:: with SMTP id p26mr2455710otk.206.1606933893884; Wed, 02 Dec 2020 10:31:33 -0800 (PST) MIME-Version: 1.0 References: <87blkbx1gt.fsf@gmx.net> <87imdp5r80.fsf@rub.de> <20200811132955.wbt55ns7bu5mxouq@linutronix.de> <20200811152551.dmfw46urecbmeklr@linutronix.de> <87ft8tayic.fsf@gmx.net> <20200811184902.2fm4eyprmpkfon2j@linutronix.de> <20201006214927.4nsqtfji4fdv3oed@linutronix.de> <3fc9074b-c153-8446-0289-1e4dfab395eb@intel.com> <20201026172057.h5toqoobiyhc4g3g@linutronix.de> <20201202180350.kwmgfzkom7v7bzjg@linutronix.de> In-Reply-To: <20201202180350.kwmgfzkom7v7bzjg@linutronix.de> From: "Rafael J. Wysocki" Date: Wed, 2 Dec 2020 19:31:21 +0100 Message-ID: Subject: Re: power-off delay/hang due to commit 6d25be57 (mainline) To: Sebastian Andrzej Siewior Cc: "Rafael J. Wysocki" , "Rafael J. Wysocki" , Stephen Berman , Zhang Rui , Robert Moore , Erik Kaneda , Len Brown , Thomas Gleixner , Peter Zijlstra , Linux Kernel Mailing List , ACPI Devel Maling List , "open list:ACPI COMPONENT ARCHITECTURE (ACPICA)" Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org On Wed, Dec 2, 2020 at 7:03 PM Sebastian Andrzej Siewior wrote: > > On 2020-10-26 18:20:59 [+0100], To Rafael J. Wysocki wrote: > > > > > > Done as Bug 208877. > > > > Rafael, do you have any suggestions? > > > > > > I've lost track of this sorry. > > > > > > I have ideas, let me get back to this next week. > > > > :) > > Rafael, any update? If you outline an idea or so then I may be able to > form a patch out of it. Otherwise I have no idea how to fix this - other > than telling the driver to not poll in smaller intervals than > 30secs. The idea, roughly speaking, is to limit the number of outstanding work items in the queue (basically, if there's a notification occurring before the previous one can be handled, there is no need to queue up another work item for it).