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=-4.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 995DFC433E1 for ; Thu, 16 Jul 2020 15:43:45 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2408E2076D for ; Thu, 16 Jul 2020 15:43:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="Kc2gOOeC"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="UaFBKEA6"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="5Sk5Wz7P" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2408E2076D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id B307F1675; Thu, 16 Jul 2020 17:42:53 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz B307F1675 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1594914223; bh=rjY6PZnbUEuWmjsknYHCNdPa4D57QToXEVEgJN3qn9s=; h=Date:From:To:Subject:References:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Kc2gOOeC/TDECDH32h3B7M2qhVV1yUGqBPvgsLwdyMocpIcVteCS0HMa1ME82q3+G ks3Mtf598fNWUsgal60v8bM1mfbcrI1fQi4ltpqf9Vq3KuPI8EbX9CFm5pq70SVBbb GEJZ2abmrSBYu3iM10P+AgT23R0vIKFg1PxgrukQ= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id ADD60F802C4; Thu, 16 Jul 2020 17:40:23 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 27357F8014E; Thu, 16 Jul 2020 10:15:54 +0200 (CEST) Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 49092F8014E for ; Thu, 16 Jul 2020 10:15:46 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 49092F8014E Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="UaFBKEA6"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="5Sk5Wz7P" Date: Thu, 16 Jul 2020 10:15:38 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1594887345; 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=Yn1umK+caUdMmMSNg+DEfBz4G3dj7XgdwXV/exFiYfQ=; b=UaFBKEA6NODD9CMCeCn4AwJJl+5Kb+eLxkOEAaardBheygNhikE3rlTYEMw5vaR51/Lawq 7mrw/y3Z1AkwNQOP9LPdJjqePDdaFl5hWIwglIWh3mfsb2WuyFAVQIcALQM33iIyFKGFOj fa03u9uEJlrow8rG5a37UEKVEfdsK0ZmcBpclOT7xWQ9hH31YQZe7VjvBJv9FND71PPU45 1K1qbauIzUgepakJxCLbRbOaMY0m7eICOmpcgqw4KVnQDM7Lkbns9Ap6g4Jqab08zfGYM1 yr4OtcJqxtSX1gCSMt8B+famnlapOvVi1qj2ZLSe4MQSiJXSwlds1pkhkro8Jg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1594887345; 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=Yn1umK+caUdMmMSNg+DEfBz4G3dj7XgdwXV/exFiYfQ=; b=5Sk5Wz7PNQjRQnpYCfpv1U5JHmR5MI/fixBOjSbTfFHFRjXeJYKxTA/HCkWq4XYLVNfwXY n6eqRIBMER6pBPCA== From: Sebastian Andrzej Siewior To: Peter Zijlstra Subject: Re: [PATCH 0/3] Modernize tasklet callback API Message-ID: <20200716081538.2sivhkj4hcyrusem@linutronix.de> References: <20200716030847.1564131-1-keescook@chromium.org> <20200716075718.GM10769@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200716075718.GM10769@hirez.programming.kicks-ass.net> X-Mailman-Approved-At: Thu, 16 Jul 2020 17:40:15 +0200 Cc: Kuppuswamy Sathyanarayanan , "Rafael J. Wysocki" , Oscar Carter , Mitchell Blank Jr , kernel-hardening@lists.openwall.com, kgdb-bugreport@lists.sourceforge.net, alsa-devel@alsa-project.org, Allen Pais , netdev@vger.kernel.org, Christian Gromm , Will Deacon , devel@driverdev.osuosl.org, Jonathan Corbet , Daniel Thompson , "David S. Miller" , Masahiro Yamada , Takashi Iwai , Julian Wiedmann , "Matthew Wilcox \(Oracle\)" , Christian Borntraeger , Nishka Dasgupta , Jiri Slaby , Jakub Kicinski , Guenter Roeck , Wambui Karuga , Kees Cook , Vasily Gorbik , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Heiko Carstens , linux-input@vger.kernel.org, Ursula Braun , Stephen Boyd , Chris Packham , Harald Freudenberger , Thomas Gleixner , Felipe Balbi , Kyungtae Kim , Greg Kroah-Hartman , Dmitry Torokhov , Douglas Anderson , Kevin Curtis , linux-usb@vger.kernel.org, Jason Wessel , Romain Perier , Karsten Graul X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On 2020-07-16 09:57:18 [+0200], Peter Zijlstra wrote: > > there appear to be hardly any users left.. Can't we stage an extinction > event here instead? Most of the time the tasklet is scheduled from an interrupt handler. So we could get rid of these tasklets by using threaded IRQs. Sebastian