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=-6.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 66F01C2D0DB for ; Fri, 24 Jan 2020 11:42:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 33EAD206F0 for ; Fri, 24 Jan 2020 11:42:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZK/LjvDd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389931AbgAXLL4 (ORCPT ); Fri, 24 Jan 2020 06:11:56 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:31210 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2387861AbgAXLLz (ORCPT ); Fri, 24 Jan 2020 06:11:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579864314; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:in-reply-to:in-reply-to:references:references; bh=Ch982V+umlLpw6I38JUNUVDMopuxgmpFcPRNY4jO2GY=; b=ZK/LjvDdkq2xRjh7Gzn3VCEbFqb4rUvflTsGCcLAqTsIRcgmtOveNGpD+KjSGDXGLFq40O h2uKueiLlMzWWaLqDJakJvahQQoeAxC57UE+RBXMjSTBVq/gOmYSoKbV8zQUP3mmBbosMu GwwWPwxknCDKOlz9gmjJzK2Ohri6HsE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-226-nbWU-IMmMe6XTE5Fhmb2YA-1; Fri, 24 Jan 2020 06:11:50 -0500 X-MC-Unique: nbWU-IMmMe6XTE5Fhmb2YA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 805B3DB60; Fri, 24 Jan 2020 11:11:49 +0000 (UTC) Received: from intel-purley-fpgabmp-02.ml3.eng.bos.redhat.com (intel-purley-fpgabmp-02.ml3.eng.bos.redhat.com [10.19.176.206]) by smtp.corp.redhat.com (Postfix) with ESMTP id C93221001925; Fri, 24 Jan 2020 11:11:48 +0000 (UTC) From: Scott Wood To: Sebastian Andrzej Siewior Cc: linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org, Steven Rostedt , Thomas Gleixner , Scott Wood Subject: [PATCH RT 2/2] sched: migrate_enable: Remove __schedule() call Date: Fri, 24 Jan 2020 06:11:47 -0500 Message-Id: <1579864307-13093-2-git-send-email-swood@redhat.com> In-Reply-To: <1579864307-13093-1-git-send-email-swood@redhat.com> References: <1579864307-13093-1-git-send-email-swood@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Sender: linux-rt-users-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org We can rely on preempt_enable() to schedule. Besides simplifying the code, this potentially allows sequences such as the following to be permitted: migrate_disable(); preempt_disable(); migrate_enable(); preempt_enable(); Suggested-by: Sebastian Andrzej Siewior Signed-off-by: Scott Wood --- kernel/sched/core.c | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 7713e9c34ad1..ea0536461981 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -8248,7 +8248,6 @@ void migrate_enable(void) stop_one_cpu_nowait(task_cpu(p), migration_cpu_stop, arg, work); - __schedule(true); } out: -- 1.8.3.1