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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 A61DFC433E1 for ; Tue, 26 May 2020 16:24:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7A55820787 for ; Tue, 26 May 2020 16:24:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="EGQ0Vqdo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388612AbgEZQY1 (ORCPT ); Tue, 26 May 2020 12:24:27 -0400 Received: from merlin.infradead.org ([205.233.59.134]:35176 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728598AbgEZQYZ (ORCPT ); Tue, 26 May 2020 12:24:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Subject:Cc:To:From:Date:Message-ID: Sender:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To:References; bh=r5qzmgEBDPX/2DFy1eU97NU+3vwe8Kx4TqYAkIqdmjI=; b=EGQ0VqdotNdmrFlIyv23OFuXn6 KEoqktPOc03CBN7qrJBZD/XA9CNZ2UkebSMhDzi1Jfl+zvSYBYz8yLG8X7inA4Y4aFOsPpatQrDRC T2LRFzUZDfiKleUo6j8wkdG/hqzZwM1PkNOKwB/oNhrxMn/QYrbt/4o+Kgy6BwHViV7xK4QtVD5cY CKBFZy8zsJfCABix1VK/iUraI4FabhM5v9UoxHqdGzjawlNWqNlyZHjGUnK+OpHrxd4xwcI2xC7PC hPr+oWxRQlpZ513iYYoJmepdkholPJVb6qLNca7XC7eX+JOcEan0W6JYTOhTZDkMOoXS5fkkj3q/t cCJ0iz/A==; 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 1jdcIv-0005Tc-8T; Tue, 26 May 2020 16:19:49 +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 60B3B306099; Tue, 26 May 2020 18:19:41 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 4127E20FF792B; Tue, 26 May 2020 18:19:41 +0200 (CEST) Message-ID: <20200526161057.531933155@infradead.org> User-Agent: quilt/0.66 Date: Tue, 26 May 2020 18:10:57 +0200 From: Peter Zijlstra To: tglx@linutronix.de, frederic@kernel.org Cc: linux-kernel@vger.kernel.org, x86@kernel.org, cai@lca.pw, mgorman@techsingularity.net, peterz@infradead.org Subject: [RFC][PATCH 0/7] Fix the scheduler-IPI mess. Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! So commit: 90b5363acd47 ("sched: Clean up scheduler_ipi()") is pretty buggered, and I'm afraid this is the 'prettiest' pile of puke I could come up with. It boots and builds a kernel, but it already did that for me. I do think there's definite room for further integration of smp_function_call and irq_work, but figured this was quite enough for now. Please look hard, there be dragons here, I'm sure.