From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751764AbcFFIRv (ORCPT ); Mon, 6 Jun 2016 04:17:51 -0400 Received: from mga01.intel.com ([192.55.52.88]:57061 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750884AbcFFIRt (ORCPT ); Mon, 6 Jun 2016 04:17:49 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,426,1459839600"; d="scan'208";a="996016054" From: Yuyang Du To: peterz@infradead.org, mingo@kernel.org, linux-kernel@vger.kernel.org Cc: bsegall@google.com, pjt@google.com, morten.rasmussen@arm.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, Yuyang Du Subject: [PATCH v4 0/5] sched/fair: Fix attach and detach sched avgs for task group change or sched class change Date: Mon, 6 Jun 2016 08:20:36 +0800 Message-Id: <1465172441-27727-1-git-send-email-yuyang.du@intel.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Peter, It seems the problem is worse, the attach twice issue can happen not only as Vincent raised when task moves between groups, but also when switching to fair class. In addition, for newly forked task, the detach and attach also have problems. Thanks a lot to Vincent. This new version mainly addresses his comments to reword the description of the problem. Thanks, Yuyang -- Yuyang Du (5): sched/fair: Clean up attach_entity_load_avg() sched/fair: Fix attaching task sched avgs twice when switching to fair or changing task group sched/fair: Skip detach sched avgs for new task when changing task groups sched/fair: Move load and util avgs from wake_up_new_task() to sched_fork() sched/fair: Add inline to detach_entity_load_evg() kernel/sched/auto_group.c | 2 +- kernel/sched/core.c | 13 ++++---- kernel/sched/fair.c | 76 ++++++++++++++++++++------------------------- kernel/sched/sched.h | 6 ++-- 4 files changed, 45 insertions(+), 52 deletions(-) -- 1.7.9.5