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Date: Tue, 7 Jun 2011 23:38:23 +0900
From: Minchan Kim <minchan.kim@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mm <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
Mel Gorman <mgorman@...e.de>,
Andrea Arcangeli <aarcange@...hat.com>,
Rik van Riel <riel@...hat.com>,
Johannes Weiner <hannes@...xchg.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
Minchan Kim <minchan.kim@...il.com>
Subject: [PATCH v3 10/10] add inorder-lru tracepoints for just measurement
This patch adds some tracepints for see the effect this patch
series. This tracepoints isn't for merge but just see the effect.
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Rik van Riel <riel@...hat.com>
Cc: Andrea Arcangeli <aarcange@...hat.com>
Signed-off-by: Minchan Kim <minchan.kim@...il.com>
---
include/trace/events/inorder_putback.h | 79 ++++++++++++++++++++++++++++++++
mm/compaction.c | 2 +
mm/migrate.c | 7 +++
mm/vmscan.c | 3 +-
4 files changed, 89 insertions(+), 2 deletions(-)
create mode 100644 include/trace/events/inorder_putback.h
diff --git a/include/trace/events/inorder_putback.h b/include/trace/events/inorder_putback.h
new file mode 100644
index 0000000..c615ed8
--- /dev/null
+++ b/include/trace/events/inorder_putback.h
@@ -0,0 +1,79 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM inorder_putback
+
+#if !defined(_TRACE_INP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_INP_H
+
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(mm_compaction_inorder,
+
+ TP_PROTO(struct page *page,
+ struct page *newpage),
+
+ TP_ARGS(page, newpage),
+
+ TP_STRUCT__entry(
+ __field(struct page *, page)
+ __field(struct page *, newpage)
+ ),
+
+ TP_fast_assign(
+ __entry->page = page;
+ __entry->newpage = newpage;
+ ),
+
+ TP_printk("pfn=%lu new pfn=%lu",
+ page_to_pfn(__entry->page),
+ page_to_pfn(__entry->newpage))
+);
+
+TRACE_EVENT(mm_compaction_outoforder,
+
+ TP_PROTO(struct page *page,
+ struct page *newpage),
+
+ TP_ARGS(page, newpage),
+
+ TP_STRUCT__entry(
+ __field(struct page *, page)
+ __field(struct page *, newpage)
+ ),
+
+ TP_fast_assign(
+ __entry->page = page;
+ __entry->newpage = newpage;
+ ),
+
+ TP_printk("pfn=%lu new pfn=%lu",
+ page_to_pfn(__entry->page),
+ page_to_pfn(__entry->newpage))
+);
+
+TRACE_EVENT(mm_compact_isolate,
+
+ TP_PROTO(struct page *prev_page,
+ struct page *page),
+
+ TP_ARGS(prev_page, page),
+
+ TP_STRUCT__entry(
+ __field(struct page *, prev_page)
+ __field(struct page *, page)
+ ),
+
+ TP_fast_assign(
+ __entry->prev_page = prev_page;
+ __entry->page = page;
+ ),
+
+ TP_printk("pfn=%lu prev_pfn=%lu",
+ page_to_pfn(__entry->page),
+ page_to_pfn(__entry->prev_page))
+);
+
+#endif /* _TRACE_INP_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/mm/compaction.c b/mm/compaction.c
index 29e6aa9..1041251 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -16,6 +16,7 @@
#include <linux/sysfs.h>
#include "internal.h"
+#include <trace/events/inorder_putback.h>
#define CREATE_TRACE_POINTS
#include <trace/events/compaction.h>
@@ -334,6 +335,7 @@ static unsigned long isolate_migratepages(struct zone *zone,
if (__isolate_lru_page(page, mode, 0, &prev_page) != 0)
continue;
+ trace_mm_compact_isolate(prev_page, page);
VM_BUG_ON(PageTransCompound(page));
/* Successfully isolated */
diff --git a/mm/migrate.c b/mm/migrate.c
index a57f60b..2a8f713 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -39,6 +39,9 @@
#include "internal.h"
+#define CREATE_TRACE_POINTS
+#include <trace/events/inorder_putback.h>
+
#define lru_to_page(_head) (list_entry((_head)->prev, struct page, lru))
/*
@@ -96,10 +99,12 @@ void putback_ilru_pages(struct inorder_lru *l)
spin_lock_irq(&zone->lru_lock);
prev = page->ilru.prev_page;
if (same_lru(page, prev)) {
+ trace_mm_compaction_inorder(page, page);
putback_page_to_lru(page, prev);
spin_unlock_irq(&zone->lru_lock);
}
else {
+ trace_mm_compaction_outoforder(page, page);
spin_unlock_irq(&zone->lru_lock);
putback_lru_page(page);
}
@@ -899,6 +904,7 @@ void __put_ilru_pages(struct page *page, struct page *newpage,
if (page && same_lru(page, prev_page)) {
putback_page_to_lru(newpage, prev_page);
spin_unlock_irq(&zone->lru_lock);
+ trace_mm_compaction_inorder(page, newpage);
/*
* The newpage will replace LRU position of old page and
* old one would be freed. So let's adjust prev_page of pages
@@ -909,6 +915,7 @@ void __put_ilru_pages(struct page *page, struct page *newpage,
}
else {
spin_unlock_irq(&zone->lru_lock);
+ trace_mm_compaction_inorder(page, newpage);
putback_lru_page(newpage);
}
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 7668e8d..5af1ba0 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -49,10 +49,9 @@
#include <linux/swapops.h>
#include "internal.h"
-
+#include <trace/events/inorder_putback.h>
#define CREATE_TRACE_POINTS
#include <trace/events/vmscan.h>
-
/*
* reclaim_mode determines how the inactive list is shrunk
* RECLAIM_MODE_SINGLE: Reclaim only order-0 pages
--
1.7.0.4
--
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