linux-kernel - [PATCH 2/3] add inactive ratio calculation function of each zone

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Message-Id: <20090520161936.c86a0e38.minchan.kim@barrios-desktop>
Date:	Wed, 20 May 2009 16:19:36 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>
Cc:	Mel Gorman <mel@....ul.ie>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>
Subject: [PATCH 2/3] add inactive ratio calculation function of each zone

This patch divides setup_per_zone_inactive_ratio with
per zone inactive ratio calculaton.

CC: Rik van Riel <riel@...hat.com>
CC: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
CC: Johannes Weiner <hannes@...xchg.org>
Signed-off-by: Minchan Kim <minchan.kim@...il.com>
---
 include/linux/mm.h |    1 +
 mm/page_alloc.c    |   14 +++++++++-----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1b2cb16..cede957 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1059,6 +1059,7 @@ extern void set_dma_reserve(unsigned long new_dma_reserve);
 extern void memmap_init_zone(unsigned long, int, unsigned long,
 				unsigned long, enum memmap_context);
 extern void setup_per_zone_wmark_min(void);
+extern void calculate_per_zone_inactive_ratio(struct zone* zone);
 extern void mem_init(void);
 extern void __init mmap_init(void);
 extern void show_mem(void);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 273526b..4601ba0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4552,11 +4552,8 @@ void setup_per_zone_wmark_min(void)
  *    1TB     101        10GB
  *   10TB     320        32GB
  */
-static void __init setup_per_zone_inactive_ratio(void)
+void calculate_per_zone_inactive_ratio(struct zone* zone)
 {
-	struct zone *zone;
-
-	for_each_zone(zone) {
 		unsigned int gb, ratio;
 
 		/* Zone size in gigabytes */
@@ -4567,7 +4564,14 @@ static void __init setup_per_zone_inactive_ratio(void)
 			ratio = 1;
 
 		zone->inactive_ratio = ratio;
-	}
+}
+
+static void __init setup_per_zone_inactive_ratio(void)
+{
+	struct zone *zone;
+
+	for_each_zone(zone) 
+		calculate_per_zone_inactive_ratio(zone);
 }
 
 /*
-- 
1.5.4.3



-- 
Kinds Regards
Minchan Kim
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