From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E0D6D364BE for ; Wed, 15 Nov 2023 19:32:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ZySMaza4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92041C433CA; Wed, 15 Nov 2023 19:32:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700076722; bh=pFrU8VHdAS+jedrk5VSa2ANUOiAgLpwy3CsZ3xX1KMs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZySMaza4Gk3/XenoZByHrnjvqkV05Pi5LeITrS5DTT/fl2xsUXX0Fe0WnhOQU8xaE 2ESnHbhYdGXeSlwKzY5gL0YTYormMJ4eQhm7rnwNMN1tVoQKnaZdo8NMqeTHmJkbzn 2mJ8iceXMWSZEAGXCMlvhNoNAOjI9SlIImr3x1fs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Leo Yu-Chi Liang , Chengming Zhou , Ingo Molnar , Vincent Guittot , Sasha Levin Subject: [PATCH 6.6 005/603] sched/fair: Fix cfs_rq_is_decayed() on !SMP Date: Wed, 15 Nov 2023 14:09:10 -0500 Message-ID: <20231115191613.495853090@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115191613.097702445@linuxfoundation.org> References: <20231115191613.097702445@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chengming Zhou [ Upstream commit c0490bc9bb62d9376f3dd4ec28e03ca0fef97152 ] We don't need to maintain per-queue leaf_cfs_rq_list on !SMP, since it's used for cfs_rq load tracking & balancing on SMP. But sched debug interface uses it to print per-cfs_rq stats. This patch fixes the !SMP version of cfs_rq_is_decayed(), so the per-queue leaf_cfs_rq_list is also maintained correctly on !SMP, to fix the warning in assert_list_leaf_cfs_rq(). Fixes: 0a00a354644e ("sched/fair: Delete useless condition in tg_unthrottle_up()") Reported-by: Leo Yu-Chi Liang Signed-off-by: Chengming Zhou Signed-off-by: Ingo Molnar Tested-by: Leo Yu-Chi Liang Reviewed-by: Vincent Guittot Closes: https://lore.kernel.org/all/ZN87UsqkWcFLDxea@swlinux02/ Link: https://lore.kernel.org/r/20230913132031.2242151-1-chengming.zhou@linux.dev Signed-off-by: Sasha Levin --- kernel/sched/fair.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index df348aa55d3c7..6af1d48d467ed 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4932,7 +4932,7 @@ static inline void update_misfit_status(struct task_struct *p, struct rq *rq) static inline bool cfs_rq_is_decayed(struct cfs_rq *cfs_rq) { - return true; + return !cfs_rq->nr_running; } #define UPDATE_TG 0x0 -- 2.42.0