From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-f169.google.com (mail-ob0-f169.google.com [209.85.214.169]) by kanga.kvack.org (Postfix) with ESMTP id 7FE836B003D for ; Sun, 8 Dec 2013 01:15:22 -0500 (EST) Received: by mail-ob0-f169.google.com with SMTP id wm4so2503210obc.0 for ; Sat, 07 Dec 2013 22:15:22 -0800 (PST) Received: from e28smtp01.in.ibm.com (e28smtp01.in.ibm.com. [122.248.162.1]) by mx.google.com with ESMTPS id sy1si3300218obc.90.2013.12.07.22.15.20 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Sat, 07 Dec 2013 22:15:21 -0800 (PST) Received: from /spool/local by e28smtp01.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 8 Dec 2013 11:45:17 +0530 Received: from d28relay02.in.ibm.com (d28relay02.in.ibm.com [9.184.220.59]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id CB266E0053 for ; Sun, 8 Dec 2013 11:47:31 +0530 (IST) Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay02.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id rB86F4vK32178254 for ; Sun, 8 Dec 2013 11:45:04 +0530 Received: from d28av04.in.ibm.com (localhost [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id rB86FDYr018979 for ; Sun, 8 Dec 2013 11:45:13 +0530 From: Wanpeng Li Subject: [PATCH v3 09/12] sched/numa: fix task scan rate adjustment Date: Sun, 8 Dec 2013 14:14:50 +0800 Message-Id: <1386483293-15354-9-git-send-email-liwanp@linux.vnet.ibm.com> In-Reply-To: <1386483293-15354-1-git-send-email-liwanp@linux.vnet.ibm.com> References: <1386483293-15354-1-git-send-email-liwanp@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton , Ingo Molnar Cc: Rik van Riel , Mel Gorman , Peter Zijlstra , Naoya Horiguchi , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Wanpeng Li commit 04bb2f947 (sched/numa: Adjust scan rate in task_numa_placement) calculate period_slot which should be used as base value of scan rate increase if remote access dominate. However, current codes forget to use it, this patch fix it. Signed-off-by: Wanpeng Li --- kernel/sched/fair.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 7073c76..b077f1b3 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1358,7 +1358,7 @@ static void update_task_scan_period(struct task_struct *p, */ 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; + diff = (period_slot * ratio) / NUMA_PERIOD_SLOTS; } p->numa_scan_period = clamp(p->numa_scan_period + diff, -- 1.7.5.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org