linux-kernel - [PATCH 1/4] vmscan: convert direct reclaim tracepoint to DEFINE

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Date:	Mon, 26 Jul 2010 12:03:14 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	kosaki.motohiro@...fujitsu.com,
	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>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>
Subject: [PATCH 1/4] vmscan: convert direct reclaim tracepoint to DEFINE_TRACE

Mel Gorman recently added some vmscan tracepoints. Unfortunately they are
covered only global reclaim. But we want to trace memcg reclaim too.

Thus, this patch convert them to DEFINE_TRACE macro. it help to reuse
tracepoint definition for other similar usage (i.e. memcg).
This patch have no functionally change.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Acked-by: Mel Gorman <mel@....ul.ie>
---
 include/trace/events/vmscan.h |   19 +++++++++++++++++--
 1 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index f2da66a..a601763 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -68,7 +68,7 @@ TRACE_EVENT(mm_vmscan_wakeup_kswapd,
 		__entry->order)
 );
 
-TRACE_EVENT(mm_vmscan_direct_reclaim_begin,
+DECLARE_EVENT_CLASS(mm_vmscan_direct_reclaim_begin_template,
 
 	TP_PROTO(int order, int may_writepage, gfp_t gfp_flags),
 
@@ -92,7 +92,15 @@ TRACE_EVENT(mm_vmscan_direct_reclaim_begin,
 		show_gfp_flags(__entry->gfp_flags))
 );
 
-TRACE_EVENT(mm_vmscan_direct_reclaim_end,
+DEFINE_EVENT(mm_vmscan_direct_reclaim_begin_template, mm_vmscan_direct_reclaim_begin,
+
+	TP_PROTO(int order, int may_writepage, gfp_t gfp_flags),
+
+	TP_ARGS(order, may_writepage, gfp_flags)
+);
+
+
+DECLARE_EVENT_CLASS(mm_vmscan_direct_reclaim_end_template,
 
 	TP_PROTO(unsigned long nr_reclaimed),
 
@@ -109,6 +117,13 @@ TRACE_EVENT(mm_vmscan_direct_reclaim_end,
 	TP_printk("nr_reclaimed=%lu", __entry->nr_reclaimed)
 );
 
+DEFINE_EVENT(mm_vmscan_direct_reclaim_end_template, mm_vmscan_direct_reclaim_end,
+
+	TP_PROTO(unsigned long nr_reclaimed),
+
+	TP_ARGS(nr_reclaimed)
+);
+
 TRACE_EVENT(mm_vmscan_lru_isolate,
 
 	TP_PROTO(int order,
-- 
1.6.5.2



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