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 0F55AC76196 for ; Tue, 11 Apr 2023 12:24:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229895AbjDKMYB (ORCPT ); Tue, 11 Apr 2023 08:24:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229804AbjDKMX5 (ORCPT ); Tue, 11 Apr 2023 08:23:57 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB02B2D4E for ; Tue, 11 Apr 2023 05:23:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1681215789; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=5NO8m/39itoQ88ondd8aih0YTi65wTxu46iy4CYCM2g=; b=f6ndSaxFJcLD6yZecpIFiuPkrMn9tslifBV253y9JgfEu0/MC+XcX69fVMHSXiuVhFp/g7 /rDZD9DAxv8b5mLA9jTlpCzYz4SczU2jSyEqX2TKV4J1NhofACMWydiTKX2h9X8+UL8fM5 SZchXdil1f7qMELnRGtfe4k7OMMG010= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-503-9JzyYxP1Nya5o5lVoenZ8w-1; Tue, 11 Apr 2023 08:23:08 -0400 X-MC-Unique: 9JzyYxP1Nya5o5lVoenZ8w-1 Received: by mail-wm1-f70.google.com with SMTP id q19-20020a05600c46d300b003ef69894934so2275065wmo.6 for ; Tue, 11 Apr 2023 05:23:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1681215787; x=1683807787; h=mime-version:message-id:date:references:in-reply-to:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=5NO8m/39itoQ88ondd8aih0YTi65wTxu46iy4CYCM2g=; b=6KaoAatYHcRQFd81Oitk3sEMQsmJ/UXMUKOGG2qefiG/2T849i6uPvzhiMd2ZBNFHB 9vgVzB3EsBAWh2im4YMazwitT5TibwnMfBYMRdR9/wIlFU1l3qHt4ytzcBHnn2b7tdDW kqRLlawgwJIUKZdHmOo982tlkRrWAECAv/9t9HqHcX9sw7q+pmm5frbHSOCV4zGc02FW ZfcJVLPpAFJrRSh0clXS7sQ0Rmw7JaiIxRl4RllKUyd9QaWvF3O1F/HtpbpMhYuPeeA3 Da0QN+tkFNOAJO5Sk/xj/qFrookAH52VbU1prcOq3gwOIyaobXBBU5JzpkoqyBexnvRt Lu7w== X-Gm-Message-State: AAQBX9dQRGAHpUDqS8LiXIER/O9obAt9HbpVNRCevsUpqpokNd0dVD7j BxLUFZGtDRgg3ZHLIQ9ZGAWZID725E91+7vd/ilO/0ZkqYjrAGZoINHHsz8nEnzTd63If1aVSQ5 pqURWHQm1wxfoWsBW1nY7i25ZLaXTL9Ym X-Received: by 2002:adf:f986:0:b0:2f0:58a:db82 with SMTP id f6-20020adff986000000b002f0058adb82mr5276605wrr.36.1681215787223; Tue, 11 Apr 2023 05:23:07 -0700 (PDT) X-Google-Smtp-Source: AKy350bZVla4xUIdyunyZ5GslESHnU5aHO2Ua9sEjV9sz3CusPberEtCDqWgto+JaCchijgLC4uwqg== X-Received: by 2002:adf:f986:0:b0:2f0:58a:db82 with SMTP id f6-20020adff986000000b002f0058adb82mr5276583wrr.36.1681215786936; Tue, 11 Apr 2023 05:23:06 -0700 (PDT) Received: from vschneid.remote.csb ([154.57.232.159]) by smtp.gmail.com with ESMTPSA id l1-20020adfe581000000b002f22c44e974sm4642841wrm.102.2023.04.11.05.23.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Apr 2023 05:23:06 -0700 (PDT) From: Valentin Schneider To: Schspa Shi , mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, dgonyier@redhat.com Cc: linux-kernel@vger.kernel.org, zhaohui.shi@horizon.ai, Schspa Shi Subject: Re: [PATCH v8 1/2] sched/rt: fix bad task migration for rt tasks In-Reply-To: References: <20220828170303.171400-1-schspa@gmail.com> Date: Tue, 11 Apr 2023 13:23:05 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/04/23 12:55, Valentin Schneider wrote: > > Sorry, I lost track of that one, and ironically it looks like we've hit > this bug internally. I'm going to test whether this is the cure we need, > but even if this isn't the same issue, that patch looks good: > > Reviewed-by: Valentin Schneider > > I have some more comments on 2/2, but IMO this can go in on its own. Seems like we were indeed hitting that bug, as we used to have a MTTF of about 2 hours, and we haven't had any with that patch in 3 days. Tested-By: Dwaine Gonyier