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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id q128-20020a634386000000b0039d9d404482si11256833pga.570.2022.05.28.12.12.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 May 2022 12:12:42 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcdkim header.b=mOn+rTUV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0472F42EE4; Sat, 28 May 2022 11:48:52 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350705AbiE0M6e (ORCPT + 99 others); Fri, 27 May 2022 08:58:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348628AbiE0M6c (ORCPT ); Fri, 27 May 2022 08:58:32 -0400 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C445830F5C for ; Fri, 27 May 2022 05:58:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1653656311; x=1685192311; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=c4DoNV38Cri5OuSzqTtO0H0lXFQHkPSGKbQ/CIAOqDE=; b=mOn+rTUVHn0Mqn7MzUiORxcuhqRx8L/H8nUBvk0b7kFCm++fMPAtcpcS 6dO0InLsT74YiUoDnzfEJEDeH3cZFoQv8dN3FoYydbEULfBRY0KLvdQMJ ap9gTivcNNd3faI052jT6OjKFR0hMgPETqEXiGgg7lblriuur0zkffVMH 0=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-02.qualcomm.com with ESMTP; 27 May 2022 05:58:31 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg-SD-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 May 2022 05:58:30 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Fri, 27 May 2022 05:58:30 -0700 Received: from qian (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Fri, 27 May 2022 05:58:28 -0700 Date: Fri, 27 May 2022 08:58:26 -0400 From: Qian Cai To: Mel Gorman CC: Andrew Morton , Nicolas Saenz Julienne , Marcelo Tosatti , Vlastimil Babka , Michal Hocko , LKML , Linux-MM Subject: Re: [PATCH 0/6] Drain remote per-cpu directly v3 Message-ID: References: <20220512085043.5234-1-mgorman@techsingularity.net> <20220527083946.GF3441@techsingularity.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20220527083946.GF3441@techsingularity.net> X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 27, 2022 at 09:39:46AM +0100, Mel Gorman wrote: > Do you think it's related to the series and if so why? From the warning, > it's not obvious to me why it would be given that it's a warning about a > task not being inactive when it is expected to be. I don't know. I just saw the 6/6 patch touched the mm_percpu_wq. Anyway, I'll spend more time to reproduce, and see if we are lucky.