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 C3808C4363A for ; Mon, 5 Oct 2020 15:10:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7A2E22085B for ; Mon, 5 Oct 2020 15:10:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="AYTp+kc7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726820AbgJEPKH (ORCPT ); Mon, 5 Oct 2020 11:10:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45746 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726730AbgJEPJ6 (ORCPT ); Mon, 5 Oct 2020 11:09:58 -0400 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD096C0613A7 for ; Mon, 5 Oct 2020 08:09:57 -0700 (PDT) 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=7uxcc1HQbsFxsgUBYV1O60g/85bhzF6mB+uRSWcz9tY=; b=AYTp+kc76rR6Lmv3HBoFX2QoDV tgcB3fVGSqmXnOjgxSOCOOsCWyCuuEDatbK32gmkGxys3mxLZIDNvOD3wP2R93Ey7gIeHXMgmcvhj dae7/m07g2ieSvryyzgAIYxnWGZYBdJZh0JLfNW62WGUqowiNtHhnwrwMeKu8G6NcttHRAhS04inT 4lkjlNWXaWaVdRhQvYSmRY8TSdq0tZ9460N2u/CJr+4roPmTtqdszYYqrnCCaF/VrNUsiamRarrZE Mj4WcOlRGpoHm9Txoz69vHVm/g4ExjaC1Mwu+F3pjC3KGrscbkUBkiTn4aiL5Fnv1CPTXadYoWnYg /IBLJZJg==; 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 1kPS7U-0008OX-RX; Mon, 05 Oct 2020 15:09:45 +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 CD8EB300B22; Mon, 5 Oct 2020 17:09:42 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id B7FF329A897B1; Mon, 5 Oct 2020 17:09:42 +0200 (CEST) Message-ID: <20201005145717.346020688@infradead.org> User-Agent: quilt/0.66 Date: Mon, 05 Oct 2020 16:57:17 +0200 From: Peter Zijlstra To: tglx@linutronix.de, mingo@kernel.org Cc: linux-kernel@vger.kernel.org, bigeasy@linutronix.de, qais.yousef@arm.com, swood@redhat.com, peterz@infradead.org, valentin.schneider@arm.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vincent.donnefort@arm.com, tj@kernel.org Subject: [PATCH -v2 00/17] sched: Migrate disable support Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Seconds version of migrate_disable(); it has a bunch of bugs fixed and has grown rt/dl balancer changes to push away tasks that inhibit the migration of migrate_disable() tasks. I still don't like it much, and it very much hurts my brain, but it seems to have stopped crashing in weird and wonderful ways. Tested on PREEMPT_RT. --- fs/proc/array.c | 4 +- include/linux/cpuhotplug.h | 1 + include/linux/cpumask.h | 6 + include/linux/preempt.h | 64 ++++ include/linux/sched.h | 5 + include/linux/sched/hotplug.h | 2 + include/linux/stop_machine.h | 5 + include/trace/events/sched.h | 12 + kernel/cpu.c | 9 +- kernel/sched/core.c | 764 ++++++++++++++++++++++++++++++++---------- kernel/sched/cpudeadline.c | 4 +- kernel/sched/cpupri.c | 4 +- kernel/sched/deadline.c | 43 ++- kernel/sched/rt.c | 84 +++-- kernel/sched/sched.h | 59 +++- kernel/stop_machine.c | 23 +- kernel/workqueue.c | 4 + lib/cpumask.c | 18 + lib/dump_stack.c | 2 + lib/smp_processor_id.c | 5 + 20 files changed, 895 insertions(+), 223 deletions(-)