From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965527Ab3HHOA7 (ORCPT ); Thu, 8 Aug 2013 10:00:59 -0400 Received: from cantor2.suse.de ([195.135.220.15]:44536 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965349Ab3HHOA4 (ORCPT ); Thu, 8 Aug 2013 10:00:56 -0400 From: Mel Gorman To: Peter Zijlstra , Rik van Riel Cc: Srikar Dronamraju , Ingo Molnar , Andrea Arcangeli , Johannes Weiner , Linux-MM , LKML , Mel Gorman Subject: [PATCH 12/27] sched: numa: Correct adjustment of numa_scan_period Date: Thu, 8 Aug 2013 15:00:24 +0100 Message-Id: <1375970439-5111-13-git-send-email-mgorman@suse.de> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1375970439-5111-1-git-send-email-mgorman@suse.de> References: <1375970439-5111-1-git-send-email-mgorman@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org numa_scan_period is in milliseconds, not jiffies. Properly placed pages slow the scanning rate but adding 10 jiffies to numa_scan_period means that the rate scanning slows depends on HZ which is confusing. Get rid of the jiffies_to_msec conversion and treat it as ms. Signed-off-by: Mel Gorman --- kernel/sched/fair.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 2908b4e..d77bb32 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -914,7 +914,7 @@ void task_numa_fault(int node, int pages, bool migrated) p->numa_scan_period_max = task_scan_max(p); p->numa_scan_period = min(p->numa_scan_period_max, - p->numa_scan_period + jiffies_to_msecs(10)); + p->numa_scan_period + 10); } task_numa_placement(p); -- 1.8.1.4