Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933925Ab3CZGA6 (ORCPT ); Tue, 26 Mar 2013 02:00:58 -0400 Received: from LGEMRELSE6Q.lge.com ([156.147.1.121]:59821 "EHLO LGEMRELSE6Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752374Ab3CZGA5 (ORCPT ); Tue, 26 Mar 2013 02:00:57 -0400 X-AuditID: 9c930179-b7c78ae000000e4b-4c-515139974843 From: Joonsoo Kim To: Ingo Molnar , Peter Zijlstra Cc: linux-kernel@vger.kernel.org, Srivatsa Vaddagiri , Joonsoo Kim Subject: [PATCH v2 0/6] correct load_balance() Date: Tue, 26 Mar 2013 15:01:34 +0900 Message-Id: <1364277700-7509-1-git-send-email-iamjoonsoo.kim@lge.com> X-Mailer: git-send-email 1.7.9.5 X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1593 Lines: 37 Commit 88b8dac0 makes load_balance() consider other cpus in its group. But, there are some missing parts for this feature to work properly. This patchset correct these things and make load_balance() robust. Others are related to LBF_ALL_PINNED. This is fallback functionality when all tasks can't be moved as cpu affinity. But, currently, if imbalance is not large enough to task's load, we leave LBF_ALL_PINNED flag and 'redo' is triggered. This is not our intention, so correct it. These are based on v3.9-rc4. Changelog v1->v2: Changes from Peter's suggestion [4/6]: don't include a code to evaluate load value in can_migrate_task() [5/6]: rename load_balance_tmpmask to load_balance_mask [6/6]: not use one more cpumasks, use env's cpus for prevent to re-select Joonsoo Kim (6): sched: change position of resched_cpu() in load_balance() sched: explicitly cpu_idle_type checking in rebalance_domains() sched: don't consider other cpus in our group in case of NEWLY_IDLE sched: move up affinity check to mitigate useless redoing overhead sched: rename load_balance_tmpmask to load_balance_mask sched: prevent to re-select dst-cpu in load_balance() kernel/sched/core.c | 4 +-- kernel/sched/fair.c | 67 +++++++++++++++++++++++++++------------------------ 2 files changed, 38 insertions(+), 33 deletions(-) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/