linux-kernel - [PATCH 1/4][resend] add per-zone statistics to show_free

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Message-Id: <20090713145732.625A.A69D9226@jp.fujitsu.com>
Date:	Mon, 13 Jul 2009 15:00:07 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	kosaki.motohiro@...fujitsu.com, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>
Subject: [PATCH 1/4][resend] add per-zone statistics to show_free_areas()

Subject: [PATCH] add per-zone statistics to show_free_areas()

show_free_areas() displays only a limited amount of zone counters. This
patch includes additional counters in the display to allow easier
debugging. This may be especially useful if an OOM is due to running out
of DMA memory.


Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Reviewed-by: Christoph Lameter <cl@...ux-foundation.org>
Acked-by: Wu Fengguang <fengguang.wu@...el.com>
Reviewed-by: Minchan Kim <minchan.kim@...il.com>
Reviewed-by: Rik van Riel <riel@...hat.com>
---
 mm/page_alloc.c |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

Index: b/mm/page_alloc.c
===================================================================
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2151,6 +2151,16 @@ void show_free_areas(void)
 			" inactive_file:%lukB"
 			" unevictable:%lukB"
 			" present:%lukB"
+			" mlocked:%lukB"
+			" dirty:%lukB"
+			" writeback:%lukB"
+			" mapped:%lukB"
+			" slab_reclaimable:%lukB"
+			" slab_unreclaimable:%lukB"
+			" pagetables:%lukB"
+			" unstable:%lukB"
+			" bounce:%lukB"
+			" writeback_tmp:%lukB"
 			" pages_scanned:%lu"
 			" all_unreclaimable? %s"
 			"\n",
@@ -2165,6 +2175,16 @@ void show_free_areas(void)
 			K(zone_page_state(zone, NR_INACTIVE_FILE)),
 			K(zone_page_state(zone, NR_UNEVICTABLE)),
 			K(zone->present_pages),
+			K(zone_page_state(zone, NR_MLOCK)),
+			K(zone_page_state(zone, NR_FILE_DIRTY)),
+			K(zone_page_state(zone, NR_WRITEBACK)),
+			K(zone_page_state(zone, NR_FILE_MAPPED)),
+			K(zone_page_state(zone, NR_SLAB_RECLAIMABLE)),
+			K(zone_page_state(zone, NR_SLAB_UNRECLAIMABLE)),
+			K(zone_page_state(zone, NR_PAGETABLE)),
+			K(zone_page_state(zone, NR_UNSTABLE_NFS)),
+			K(zone_page_state(zone, NR_BOUNCE)),
+			K(zone_page_state(zone, NR_WRITEBACK_TEMP)),
 			zone->pages_scanned,
 			(zone_is_all_unreclaimable(zone) ? "yes" : "no")
 			);


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