From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752000Ab3LKAu2 (ORCPT ); Tue, 10 Dec 2013 19:50:28 -0500 Received: from e28smtp06.in.ibm.com ([122.248.162.6]:58693 "EHLO e28smtp06.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751873Ab3LKAuW (ORCPT ); Tue, 10 Dec 2013 19:50:22 -0500 From: Wanpeng Li To: Andrew Morton Cc: Ingo Molnar , Rik van Riel , Mel Gorman , Peter Zijlstra , Naoya Horiguchi , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Wanpeng Li Subject: [PATCH v5 6/8] sched/numa: fix period_slot recalculation Date: Wed, 11 Dec 2013 08:49:59 +0800 Message-Id: <1386723001-25408-7-git-send-email-liwanp@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1386723001-25408-1-git-send-email-liwanp@linux.vnet.ibm.com> References: <1386723001-25408-1-git-send-email-liwanp@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13121100-9574-0000-0000-00000AF8C99F Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changelog: v3 -> v4: * remove period_slot recalculation The original code is as intended and was meant to scale the difference between the NUMA_PERIOD_THRESHOLD and local/remote ratio when adjusting the scan period. The period_slot recalculation can be dropped. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- kernel/sched/fair.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 106a607..ac5f1e7 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1360,7 +1360,6 @@ static void update_task_scan_period(struct task_struct *p, * scanning faster if shared accesses dominate as it may * simply bounce migrations uselessly */ - period_slot = DIV_ROUND_UP(diff, NUMA_PERIOD_SLOTS); ratio = DIV_ROUND_UP(private * NUMA_PERIOD_SLOTS, (private + shared)); diff = (diff * ratio) / NUMA_PERIOD_SLOTS; } -- 1.7.7.6