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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 35F69C4338F for ; Tue, 10 Aug 2021 14:41:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1726460F25 for ; Tue, 10 Aug 2021 14:41:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241409AbhHJOmR (ORCPT ); Tue, 10 Aug 2021 10:42:17 -0400 Received: from mga06.intel.com ([134.134.136.31]:43641 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241180AbhHJOmH (ORCPT ); Tue, 10 Aug 2021 10:42:07 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10072"; a="275950404" X-IronPort-AV: E=Sophos;i="5.84,310,1620716400"; d="scan'208";a="275950404" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Aug 2021 07:41:45 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,310,1620716400"; d="scan'208";a="526170588" Received: from ranerica-svr.sc.intel.com ([172.25.110.23]) by fmsmga002.fm.intel.com with ESMTP; 10 Aug 2021 07:41:44 -0700 From: Ricardo Neri To: "Peter Zijlstra (Intel)" , Ingo Molnar , Juri Lelli , Vincent Guittot Cc: Srikar Dronamraju , Nicholas Piggin , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Len Brown , Srinivas Pandruvada , Tim Chen , Aubrey Li , "Ravi V. Shankar" , Ricardo Neri , "Rafael J. Wysocki" , Quentin Perret , "Joel Fernandes (Google)" , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Ricardo Neri , Aubrey Li , Daniel Bristot de Oliveira Subject: [PATCH v4 4/6] sched/fair: Provide update_sg_lb_stats() with sched domain statistics Date: Tue, 10 Aug 2021 07:41:43 -0700 Message-Id: <20210810144145.18776-5-ricardo.neri-calderon@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210810144145.18776-1-ricardo.neri-calderon@linux.intel.com> References: <20210810144145.18776-1-ricardo.neri-calderon@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Before deciding to pull tasks when using asymmetric packing of tasks, on some architectures (e.g., x86) it is necessary to know not only the state of dst_cpu but also of its SMT siblings. The decision to classify a candidate busiest group as group_asym_packing is done in update_sg_lb_stats(). Give this function access to the scheduling domain statistics, which contains the statistics of the local group. Cc: Aubrey Li Cc: Ben Segall Cc: Daniel Bristot de Oliveira Cc: Dietmar Eggemann Cc: Mel Gorman Cc: Quentin Perret Cc: Rafael J. Wysocki Cc: Srinivas Pandruvada Cc: Steven Rostedt Cc: Tim Chen Reviewed-by: Joel Fernandes (Google) Reviewed-by: Len Brown Originally-by: Peter Zijlstra (Intel) Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ricardo Neri --- Changes since v3: * None Changes since v2: * Introduced this patch. Changes since v1: * N/A --- kernel/sched/fair.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 3b686e18a39b..ae3d2bc59d8d 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -8539,6 +8539,7 @@ group_type group_classify(unsigned int imbalance_pct, * @sg_status: Holds flag indicating the status of the sched_group */ static inline void update_sg_lb_stats(struct lb_env *env, + struct sd_lb_stats *sds, struct sched_group *group, struct sg_lb_stats *sgs, int *sg_status) @@ -8547,7 +8548,7 @@ static inline void update_sg_lb_stats(struct lb_env *env, memset(sgs, 0, sizeof(*sgs)); - local_group = cpumask_test_cpu(env->dst_cpu, sched_group_span(group)); + local_group = group == sds->local; for_each_cpu_and(i, sched_group_span(group), env->cpus) { struct rq *rq = cpu_rq(i); @@ -9110,7 +9111,7 @@ static inline void update_sd_lb_stats(struct lb_env *env, struct sd_lb_stats *sd update_group_capacity(env->sd, env->dst_cpu); } - update_sg_lb_stats(env, sg, sgs, &sg_status); + update_sg_lb_stats(env, sds, sg, sgs, &sg_status); if (local_group) goto next_group; -- 2.17.1