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=-7.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 32F54C4363A for ; Mon, 5 Oct 2020 16:31:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E02B520756 for ; Mon, 5 Oct 2020 16:31:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601915513; bh=xrBgSBDu4OI3gnvp5WGFwW9Uf3oAfOqubtE7Ro2ZvYI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=hgcowGfe1KH3rgidzRyKB90sq6D3SXeMtkTRd8fEvwLXdw+h15Oxb89NErpQYhfs4 VeKrcYFvwN0JA60LNHkpnaZNWLqLrBvI/Vg1+WJObRR+J7d9rCy5oYtQigoRSRe96e IEvYktUXfJv2xXs9n2uACV3APCGhctoxyOJG7sw0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728929AbgJEQbv (ORCPT ); Mon, 5 Oct 2020 12:31:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726991AbgJEQbv (ORCPT ); Mon, 5 Oct 2020 12:31:51 -0400 Received: from mail-qt1-x834.google.com (mail-qt1-x834.google.com [IPv6:2607:f8b0:4864:20::834]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 77144C0613CE for ; Mon, 5 Oct 2020 09:31:51 -0700 (PDT) Received: by mail-qt1-x834.google.com with SMTP id j22so10114914qtj.8 for ; Mon, 05 Oct 2020 09:31:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=YBVw09oCD2WGIwrQATE7+fQP8uN7Ej6Ms0bkSMhEu90=; b=ns/f2ttQDpYE+x0rJ7E42OFuduOs4LgV0T18HpW+yNuCxzTRKYLMgEQYF6ylYON0aV Gy9IAK5ox5H9TAXaH+Icomr6NmekeAM42wShB3tQZXcBSElb8zIm8bDwtZtc3286/3JV 4h28Domig3IOAVTm8zfeLvUZNq1AFpLsiXh9aaxBD6+Z3jWUUEcT/1uHCkuHpKiIt/Ig LSJq2LtzHOGKa+CVdpzF5iMQDhdV4Ke1WvGtudr92QlcO29ekyE5aJFIXZL7t4kKftpK SCj9xCnrPkT54aYQoTvL3ClfGPJhSSV1z6bM9MmG7QWMhTJJLlNlgM4Bnhpj/bvHt0rp vRpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to; bh=YBVw09oCD2WGIwrQATE7+fQP8uN7Ej6Ms0bkSMhEu90=; b=S03tQLFZVZhX95cfbL3fTcF4055ZS1SMYJivjyqs2Lw81RHImsi/HQhTOCFaxtZMuB Dz2ujO6uj52eGKtzGTVvHb+jO2Ol1OR8smfySF3ZtO8aioNbK9+a0wVdx7iYrfcpBuLo +h9RV42IMWQmUcRdBsz6CVAFcEEUsX6jlrdkrP/cfH0X99inrAcxnQNYYz2ZdNxacU4+ yyWgFINuXvCmHx75KPQgCSlPyhoR0DA2+uT55e4EQ2HFK7rxK6Bm25i8x68sDDFtDzOK 5wGYtATiPWflX37Y9aY4U/MaZYcVc++V6ZehyjYhjAmD8UWC7DVPM6X7cd7BFlN+Wow7 lw0A== X-Gm-Message-State: AOAM531Jc+yxjaPMj9kaxerlSnc/VvhXkA48bZfJHZ3BYg8Vs9ba+OrE DWRmsHrW5D5r3pYvkWVxgA8= X-Google-Smtp-Source: ABdhPJxLBptxwSzIaYMiAj/+sNjvh5iYQmQMopFDiMSXe10Fndms4ttZjvTB/1TXgnLh5VJRlycDAw== X-Received: by 2002:ac8:5743:: with SMTP id 3mr648789qtx.259.1601915510479; Mon, 05 Oct 2020 09:31:50 -0700 (PDT) Received: from localhost (dhcp-48-d6-d5-c6-42-27.cpe.echoes.net. [199.96.181.106]) by smtp.gmail.com with ESMTPSA id m18sm383949qkg.77.2020.10.05.09.31.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Oct 2020 09:31:49 -0700 (PDT) Sender: Tejun Heo Date: Mon, 5 Oct 2020 12:31:48 -0400 From: Tejun Heo To: Peter Zijlstra Cc: tglx@linutronix.de, mingo@kernel.org, linux-kernel@vger.kernel.org, bigeasy@linutronix.de, qais.yousef@arm.com, swood@redhat.com, valentin.schneider@arm.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vincent.donnefort@arm.com Subject: Re: [PATCH -v2 05/17] workqueue: Manually break affinity on hotplug Message-ID: <20201005163148.GA3601@mtj.duckdns.org> References: <20201005145717.346020688@infradead.org> <20201005150921.463998937@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201005150921.463998937@infradead.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 05, 2020 at 04:57:22PM +0200, Peter Zijlstra wrote: > Don't rely on the scheduler to force break affinity for us -- it will > stop doing that for per-cpu-kthreads. > > Signed-off-by: Peter Zijlstra (Intel) Acked-by: Tejun Heo Thanks. -- tejun