Received: by 2002:a05:6a10:9848:0:0:0:0 with SMTP id x8csp4434029pxf; Tue, 23 Mar 2021 10:27:15 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzbbHTBM7GuQvaBTM7qX/Z6UDfpDTqZeWpWICfO5xegH1rYxqWDwb7Av5vfbMfrE2qLh7eW X-Received: by 2002:a17:906:3882:: with SMTP id q2mr5891878ejd.540.1616520435121; Tue, 23 Mar 2021 10:27:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1616520435; cv=none; d=google.com; s=arc-20160816; b=iL7/ubZy00bV/F2ZbH8d7SuIBgqMRObCdQT1BVaJkHnQfcwsN4RuPVtKN8+Vub3B1/ Ny4/In9lxLFaE6aX/MK5xYZuUAm65niHfgAz26JKfeYH7tSdmW0sx+IjCNYqQixCIv7E d7tJNC+FJYfadyI7tM/JtyZ3zt8+FgLGviHrefm0UQ5S/E9/tfrM0CfQrzg6K480ZQLE nYAu7dcm9gLU/DpUsn/Ldph7Yiegjg2Zd/Hlwt+EbAPHbQ6gBBqmxbV1bZsfcf31kW0u K53qpi/KO41r745A0BFmiWzPhqHx7PrqnUj4jYRsuvnaB0Zb5HAIX8/fGjM4CcuXW18i rmYw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=ctH3/GX/nBozXg2N2Ovzg6pqL698nNQj+uNQZVeo0SI=; b=T/4y87EuBXeEpuTdQ47NGiWkq3mwXpBFIV2W75GApqZzi+nA6QifibUzbyNy5zGUbk aPj7zM6+qTuvVu0H3wUhbZviiC0rPBcBZmMFbICLafNz6IcZm3HWP8A0K/e0lyqC6X1q q8w97oyzvwjnKS8eZzudS5DsKhHHCaKKdUb7vAWLlrlRqUPHT1s/fJe+xhXBAB/qLXng Dbf8e9bXYCui6KWfxXdZZq05zro4z+1Rjk+n9cQ51jHfzA/l1xKf8ycSTEbaFtwJgYJn 4iFEhWNhxUcCmFygkoZgBshY4tGcXZZA4QiDc20iWWZdDTdTtpznieT+hoF4npInkOq3 7k1w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=KDCKEfKi; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id q2si14655103edb.393.2021.03.23.10.26.50; Tue, 23 Mar 2021 10:27:15 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=KDCKEfKi; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230104AbhCWRZd (ORCPT + 99 others); Tue, 23 Mar 2021 13:25:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59142 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230081AbhCWRZF (ORCPT ); Tue, 23 Mar 2021 13:25:05 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C94FC061574; Tue, 23 Mar 2021 10:25:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=ctH3/GX/nBozXg2N2Ovzg6pqL698nNQj+uNQZVeo0SI=; b=KDCKEfKiLv3e+MQ2bIpRcf9hR2 27l56euS0eGXlguc0ZZPXINXb3CQGglD3EuuTV6jVb1YKVy/LVlg5kw6D1JB7da5yuRmeBcvUbex8 50PKU8nsCZ7ZvgP11YfLjEsDj8a6zqHynWmCMPiq45rjxLg10bxY6g+OEAzKVL9HjQYLPiYY7O4St rsY+cjAkhFlkM5j8xVB5a/OIz5Vt5bSrCFSpqWrZv7eCw92tb8mEdZAGvG0rMRIjtSjtEJ07SuXd5 Eoel3D7kVqvRIKC35cSISz2F0SJ22028hqlvBw/XPBFItQ7UpEwZdegyxmd23LBXjtN3fuJuobRdW 0c5wQ78A==; Received: from hch by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1lOklh-00AKzg-PP; Tue, 23 Mar 2021 17:24:49 +0000 Date: Tue, 23 Mar 2021 17:24:37 +0000 From: Christoph Hellwig To: Davidlohr Bueso Cc: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Davidlohr Bueso Subject: Re: [PATCH] block/umem: convert tasklet to threaded irq Message-ID: <20210323172437.GA2463754@infradead.org> References: <20210323004856.10206-1-dave@stgolabs.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210323004856.10206-1-dave@stgolabs.net> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 22, 2021 at 05:48:56PM -0700, Davidlohr Bueso wrote: > Tasklets have long been deprecated as being too heavy on the system > by running in irq context - and this is not a performance critical > path. If a higher priority process wants to run, it must wait for > the tasklet to finish before doing so. A more suitable equivalent > is to converted to threaded irq instead and deal with the async > processing in task context. I'm really curious if this driver is still in use at all, or if we can drop it.