Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758622AbcDACKi (ORCPT ); Thu, 31 Mar 2016 22:10:38 -0400 Received: from mail-pa0-f46.google.com ([209.85.220.46]:33131 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757575AbcDACKg (ORCPT ); Thu, 31 Mar 2016 22:10:36 -0400 From: js1304@gmail.com X-Google-Original-From: iamjoonsoo.kim@lge.com To: Andrew Morton Cc: Rik van Riel , Johannes Weiner , Mel Gorman , Laura Abbott , Minchan Kim , Marek Szyprowski , Michal Nazarewicz , "Aneesh Kumar K.V" , Vlastimil Babka , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Joonsoo Kim Subject: [PATCH 4/4] mm/vmstat: make node_page_state() handles all zones by itself Date: Fri, 1 Apr 2016 11:10:10 +0900 Message-Id: <1459476610-31076-4-git-send-email-iamjoonsoo.kim@lge.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1459476610-31076-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1459476610-31076-1-git-send-email-iamjoonsoo.kim@lge.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1244 Lines: 44 From: Joonsoo Kim node_page_state() manually add statistics per each zone and return total value for all zones. Whenever we add a new zone, we need to consider this function and it's really troublesome. Make it handles all zones by itself. Signed-off-by: Joonsoo Kim --- mm/vmstat.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/mm/vmstat.c b/mm/vmstat.c index 0a726e3..a7de9ad 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -600,19 +600,13 @@ void zone_statistics(struct zone *preferred_zone, struct zone *z, gfp_t flags) unsigned long node_page_state(int node, enum zone_stat_item item) { struct zone *zones = NODE_DATA(node)->node_zones; + int i; + unsigned long count = 0; - return -#ifdef CONFIG_ZONE_DMA - zone_page_state(&zones[ZONE_DMA], item) + -#endif -#ifdef CONFIG_ZONE_DMA32 - zone_page_state(&zones[ZONE_DMA32], item) + -#endif -#ifdef CONFIG_HIGHMEM - zone_page_state(&zones[ZONE_HIGHMEM], item) + -#endif - zone_page_state(&zones[ZONE_NORMAL], item) + - zone_page_state(&zones[ZONE_MOVABLE], item); + for (i = 0; i < MAX_NR_ZONES; i++) + count += zone_page_state(zones + i, item); + + return count; } #endif -- 1.9.1