linux-kernel - [PATCH 7/7] memcg: add mm_vmscan_memcg

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Message-Id: <20100716191739.737E.A69D9226@jp.fujitsu.com>
Date:	Fri, 16 Jul 2010 19:18:18 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mel@....ul.ie>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Nishimura Daisuke <d-nishimura@....biglobe.ne.jp>
Cc:	kosaki.motohiro@...fujitsu.com
Subject: [PATCH 7/7] memcg: add mm_vmscan_memcg_isolate tracepoint


Memcg also need to trace page isolation information as global reclaim.
This patch does it.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
---
 include/trace/events/vmscan.h |   15 +++++++++++++++
 mm/memcontrol.c               |    7 +++++++
 2 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index e37fe72..eefd399 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -213,6 +213,21 @@ DEFINE_EVENT(mm_vmscan_lru_isolate_template, mm_vmscan_lru_isolate,
 
 );
 
+DEFINE_EVENT(mm_vmscan_lru_isolate_template, mm_vmscan_memcg_isolate,
+
+	TP_PROTO(int order,
+		unsigned long nr_requested,
+		unsigned long nr_scanned,
+		unsigned long nr_taken,
+		unsigned long nr_lumpy_taken,
+		unsigned long nr_lumpy_dirty,
+		unsigned long nr_lumpy_failed,
+		int isolate_mode),
+
+	TP_ARGS(order, nr_requested, nr_scanned, nr_taken, nr_lumpy_taken, nr_lumpy_dirty, nr_lumpy_failed, isolate_mode)
+
+);
+
 TRACE_EVENT(mm_vmscan_writepage,
 
 	TP_PROTO(struct page *page,
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 81bc9bf..82e191f 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -52,6 +52,9 @@
 
 #include <asm/uaccess.h>
 
+#include <trace/events/vmscan.h>
+
+
 struct cgroup_subsys mem_cgroup_subsys __read_mostly;
 #define MEM_CGROUP_RECLAIM_RETRIES	5
 struct mem_cgroup *root_mem_cgroup __read_mostly;
@@ -1042,6 +1045,10 @@ unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
 	}
 
 	*scanned = scan;
+
+	trace_mm_vmscan_memcg_isolate(0, nr_to_scan, scan, nr_taken,
+				      0, 0, 0, mode);
+
 	return nr_taken;
 }
 
-- 
1.6.5.2



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