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=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 E1001C433E1 for ; Mon, 17 Aug 2020 11:31:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C18AA207DA for ; Mon, 17 Aug 2020 11:31:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728444AbgHQLbP (ORCPT ); Mon, 17 Aug 2020 07:31:15 -0400 Received: from foss.arm.com ([217.140.110.172]:53640 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726203AbgHQLaw (ORCPT ); Mon, 17 Aug 2020 07:30:52 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 2AF8D13D5; Mon, 17 Aug 2020 04:30:38 -0700 (PDT) Received: from e113632-lin.cambridge.arm.com (e113632-lin.cambridge.arm.com [10.1.194.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id DEE213F66B; Mon, 17 Aug 2020 04:30:36 -0700 (PDT) From: Valentin Schneider To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: mingo@kernel.org, peterz@infradead.org, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, morten.rasmussen@arm.com, Quentin Perret Subject: [PATCH v6 17/17] sched/topology: Expand use of SD_DEGENERATE_GROUPS_MASK to flags not needing groups Date: Mon, 17 Aug 2020 12:30:03 +0100 Message-Id: <20200817113003.20802-18-valentin.schneider@arm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200817113003.20802-1-valentin.schneider@arm.com> References: <20200817113003.20802-1-valentin.schneider@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org All SD flags requiring 2+ sched_group to have any effect are now decorated with the SDF_NEEDS_GROUPS metaflag. This means we can now use the bitwise negation of SD_DEGENERATE_MASK in sd_degenerate() instead of explicitly using SD_WAKE_AFFINE (IOW the only flag without SDF_NEEDS_GROUPS). >From now on, any flag without SDF_NEEDS_GROUPS will be correctly accounted as a flag not requiring 2+ sched_groups. Signed-off-by: Valentin Schneider --- kernel/sched/topology.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 8064f495641b..3bb145ef5abd 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -165,7 +165,7 @@ static int sd_degenerate(struct sched_domain *sd) return 0; /* Following flags don't use groups */ - if (sd->flags & (SD_WAKE_AFFINE)) + if (sd->flags & ~SD_DEGENERATE_GROUPS_MASK) return 0; return 1; -- 2.27.0