From nobody Sun Feb 8 08:19:38 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3FFA7C001DC for ; Mon, 31 Jul 2023 10:20:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232556AbjGaKU3 (ORCPT ); Mon, 31 Jul 2023 06:20:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232483AbjGaKUM (ORCPT ); Mon, 31 Jul 2023 06:20:12 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 28C77E5A; Mon, 31 Jul 2023 03:19:48 -0700 (PDT) Date: Mon, 31 Jul 2023 10:19:46 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1690798787; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=YrO9hhJgtNLYgb+mpIYPx1bgPRK8x56azMuQtTzFB8c=; b=VOGA/bKyhdvuS+Jxbu6rrL/S6CnsjhFYYtrCyZGVa1qwa22ogAMf+Y16sHe+tU4uiNTk5Z CYssB2ZgGC0kaEJ+sdDMy0Qqk8qszTpn5kcUeIT1o52DKUfAUaqzPzNVAxd4gMj07OHtKR IY86OXb+jsVfMHegXu3QNtP6OXrIF+w8Wd+mhC8z3Cj58S9AuGjkEpt9yEmVXRekIqF0d+ TiJ4EGR/tryziVzTpSr5t4fpfftI+h7VpimQ4tQzoQYZOrz/cfc1OW9amiD1q3EosisrJu rfeFcttXU4iMwN+JEIFNFbo6BExOZRQi9OH89p9le96pYlKYAdQwiUIbe8ZRtw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1690798787; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=YrO9hhJgtNLYgb+mpIYPx1bgPRK8x56azMuQtTzFB8c=; b=u/rfeT5P17N6n6SBNX3zsKHUDLziwmSdWlgeG5GasOqnOGeJUkkCJGf+VyRdnCqy9J6se2 KZBztAi5wz5g7VBg== From: "tip-bot2 for Chen Yu" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: sched/core] sched/topology: Align group flags when removing degenerate domain Cc: Yicong Yang , Ricardo Neri , Chen Yu , "Peter Zijlstra (Intel)" , Tim Chen , Yicong Yang , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20230713013133.2314153-1-yu.c.chen@intel.com> References: <20230713013133.2314153-1-yu.c.chen@intel.com> MIME-Version: 1.0 Message-ID: <169079878649.28540.7562287481060360832.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the sched/core branch of tip: Commit-ID: 4efcc8bc7e08c09c58a2f5cbc2096fbda5b7cf5e Gitweb: https://git.kernel.org/tip/4efcc8bc7e08c09c58a2f5cbc2096fbda= 5b7cf5e Author: Chen Yu AuthorDate: Thu, 13 Jul 2023 09:31:33 +08:00 Committer: Peter Zijlstra CommitterDate: Wed, 26 Jul 2023 12:28:51 +02:00 sched/topology: Align group flags when removing degenerate domain The flags of the child of a given scheduling domain are used to initialize the flags of its scheduling groups. When the child of a scheduling domain is degenerated, the flags of its local scheduling group need to be updated to align with the flags of its new child domain. The flag SD_SHARE_CPUCAPACITY was aligned in Commit bf2dc42d6beb ("sched/topology: Propagate SMT flags when removing deg= enerate domain"). Further generalize this alignment so other flags can be used later, such as in cluster-based task wakeup. [1] Reported-by: Yicong Yang Suggested-by: Ricardo Neri Signed-off-by: Chen Yu Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Tim Chen Reviewed-by: Yicong Yang Link: https://lore.kernel.org/r/20230713013133.2314153-1-yu.c.chen@intel.com --- kernel/sched/topology.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 7cfcfe5..05a5bc6 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -722,8 +722,7 @@ cpu_attach_domain(struct sched_domain *sd, struct root_= domain *rd, int cpu) =20 if (parent->parent) { parent->parent->child =3D tmp; - if (tmp->flags & SD_SHARE_CPUCAPACITY) - parent->parent->groups->flags |=3D SD_SHARE_CPUCAPACITY; + parent->parent->groups->flags =3D tmp->flags; } =20 /*