Received: by 10.223.176.46 with SMTP id f43csp4267580wra; Tue, 23 Jan 2018 06:57:43 -0800 (PST) X-Google-Smtp-Source: AH8x22463isLsxVJRtf13s1SlqWLnpEp4HRUYqWRsYeJXkrVyAte0Nu0bVWqWiAeh2uEyu/uFcXn X-Received: by 2002:a17:902:7885:: with SMTP id q5-v6mr6039225pll.143.1516719462918; Tue, 23 Jan 2018 06:57:42 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1516719462; cv=none; d=google.com; s=arc-20160816; b=AbnYlWgt4oarvLn54Y7a+Z5FV3kuTOW7odW9/17hjM7r7Z/2qYp1+3Vwk2MlWgM2Ut eapBtL63HBCK2TlgGTrdKlpkjfBJa78OD7E1BI5SqOlidBeoorfwIKr6+TyuJVBueqw7 LFnL5lC0uCpQHeG/KrxF3h0AzDYhtD6YTSooJpBQn6PQVzQTLlmIDeD/KncnrwzSZjXz KIpZMxMAd9gN8NTFy6Alp5qSrYPcuvUyARyw492V5a3sQdj+6pODypAXkknDz3jCUnbf VDsFzpMFGQ5ukirv+nbcRYU3JCqVwstAiPKrpXMROTg5DNGGw89jw0BGk55B/Um0BFMr hPSA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date :dmarc-filter:arc-authentication-results; bh=SgPGl+S/4DwCMsTqwYyRkKimyedgb4Qyi9zYUfeaRf4=; b=hEOxz/LumLE+1R8qNk+jv4vqUQVALzZwV+02iuH95TtLz9hN6kAUC6g/Ny1MZtK1N2 qibBN3P4JXjAFJG6cAqv6Vz+WBpY4kOZw0ymmioqdw8RWlhEzS7mlSEI1M086dTI9Q0i UiRRJj9zGZ3u3RlM0wMVAPO/yL3WdOIVuZXdvdEQxHy5DsmiMLCE4xyUlbOS6+kr7sU9 wp6nrBniblPoCI1eJrH5cTARPokETvIOWAd7QDFteVQGbT0PxhsnYVhogTjN8ztU/RNb w3DvYOe/8rqHqNbXCfdcyeNBcD6k2hVTAUStulqPob3GHWf9/bqPaCrOadqHYG5Eboxq IHOw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id c14si12704154pgu.645.2018.01.23.06.57.29; Tue, 23 Jan 2018 06:57:42 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752128AbeAWO46 (ORCPT + 99 others); Tue, 23 Jan 2018 09:56:58 -0500 Received: from mail.kernel.org ([198.145.29.99]:35946 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751956AbeAWO44 (ORCPT ); Tue, 23 Jan 2018 09:56:56 -0500 Received: from gandalf.local.home (cpe-172-100-180-131.stny.res.rr.com [172.100.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 843392178B; Tue, 23 Jan 2018 14:56:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 843392178B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=rostedt@goodmis.org Date: Tue, 23 Jan 2018 09:56:52 -0500 From: Steven Rostedt To: Sergey Senozhatsky Cc: Petr Mladek , Tejun Heo , akpm@linux-foundation.org, linux-mm@kvack.org, Cong Wang , Dave Hansen , Johannes Weiner , Mel Gorman , Michal Hocko , Vlastimil Babka , Peter Zijlstra , Linus Torvalds , Jan Kara , Mathieu Desnoyers , Tetsuo Handa , rostedt@home.goodmis.org, Byungchul Park , Pavel Machek , linux-kernel@vger.kernel.org, Sergey Senozhatsky Subject: Re: [PATCH v5 0/2] printk: Console owner and waiter logic cleanup Message-ID: <20180123095652.5e14da85@gandalf.local.home> In-Reply-To: <20180123064023.GA492@jagdpanzerIV> References: <20180111215547.2f66a23a@gandalf.local.home> <20180116194456.GS3460072@devbig577.frc2.facebook.com> <20180117091208.ezvuhumnsarz5thh@pathway.suse.cz> <20180117151509.GT3460072@devbig577.frc2.facebook.com> <20180117121251.7283a56e@gandalf.local.home> <20180117134201.0a9cbbbf@gandalf.local.home> <20180119132052.02b89626@gandalf.local.home> <20180120071402.GB8371@jagdpanzerIV> <20180120104931.1942483e@gandalf.local.home> <20180121141521.GA429@tigerII.localdomain> <20180123064023.GA492@jagdpanzerIV> X-Mailer: Claws Mail 3.16.0 (GTK+ 2.24.31; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 23 Jan 2018 15:40:23 +0900 Sergey Senozhatsky wrote: > Why do we even use irq_work for printk_safe? Why not? Really, I think you are trying to solve a symptom and not the problem. If we are having issues with irq_work, we are going to have issues with a work queue. It's just spreading out the problem instead of fixing it. -- Steve