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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 0C88DC4363A for ; Wed, 28 Oct 2020 22:53:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9337D20732 for ; Wed, 28 Oct 2020 22:53:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="JdjIYQD5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389697AbgJ1WxB (ORCPT ); Wed, 28 Oct 2020 18:53:01 -0400 Received: from merlin.infradead.org ([205.233.59.134]:48808 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389676AbgJ1Ww7 (ORCPT ); Wed, 28 Oct 2020 18:52:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.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=CoaJ9tDmZ1LJ1BuhReYbI223NgdnurGa35yue6VMwt0=; b=JdjIYQD5o5Gr5PF7wWhzVBs1ry TzWm6U5+5uNJxiJkWa79hAbTX9XFrtYZV58iafOopQRCYInZYRrnVZlkszs8sXVJLr8Fo+Pv70bpv udfjNK531hpzdFeYERGEm9l22pSmXm2nxbXe5EDbfqv2lPk0HJ7FwQEhLjKtR1q2Ox34WgagEN0iQ QtQIV0LGsMVcdBCdengvWrngTVAoE2LP7cniC+wzzQb0B2i3CONOOxa1JU2zoQEjx79wGkPtMLy3b AGOvDj/TRbkFIkqGFCYYTS4C+eqyy8EEs0Tpiu4+lJueKOJSOi3ikXn5y1sIRcz42Be1J6dKBSNJj kiWAgIIA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kXmop-0005mh-Al; Wed, 28 Oct 2020 14:52:55 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 0BE5B3006D0; Wed, 28 Oct 2020 15:52:52 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 3CE8F220F8C32; Wed, 28 Oct 2020 15:52:52 +0100 (CET) Date: Wed, 28 Oct 2020 15:52:52 +0100 From: Peter Zijlstra To: Frederic Weisbecker Cc: mingo@kernel.org, linux-kernel@vger.kernel.org, will@kernel.org, paulmck@kernel.org, hch@lst.de, axboe@kernel.dk, chris@chris-wilson.co.uk, davem@davemloft.net, kuba@kernel.org, fweisbec@gmail.com, oleg@redhat.com, vincent.guittot@linaro.org Subject: Re: [PATCH v3 4/6] irq_work: Unconditionally build on SMP Message-ID: <20201028145252.GC2628@hirez.programming.kicks-ass.net> References: <20201028110707.971887448@infradead.org> <20201028111221.464733855@infradead.org> <20201028133420.GD229044@lothringen> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201028133420.GD229044@lothringen> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 28, 2020 at 02:34:20PM +0100, Frederic Weisbecker wrote: > On Wed, Oct 28, 2020 at 12:07:11PM +0100, Peter Zijlstra wrote: > > This may need a changelog :-) Like so then? --- Only (the local) irq_work_queue() relies on arch self-IPI bits, prepare to have the remote queueing available on all SMP.