linux-kernel - [PATCH] trace/page_ref: print out the page migratetype name

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Message-ID: <20190327050937.5395-1-sjhuang@iluvatar.ai>
Date:   Wed, 27 Mar 2019 13:09:37 +0800
From:   Huang Shijie <sjhuang@...vatar.ai>
To:     <rostedt@...dmis.org>
CC:     <mingo@...hat.com>, <linux-kernel@...r.kernel.org>,
        Huang Shijie <sjhuang@...vatar.ai>
Subject: [PATCH] trace/page_ref: print out the page migratetype name

Print out the page migratetype name which is more readable.

Signed-off-by: Huang Shijie <sjhuang@...vatar.ai>
---
 include/trace/events/page_ref.h | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/include/trace/events/page_ref.h b/include/trace/events/page_ref.h
index 5d2ea93956ce..94df979c2d6b 100644
--- a/include/trace/events/page_ref.h
+++ b/include/trace/events/page_ref.h
@@ -36,11 +36,12 @@ DECLARE_EVENT_CLASS(page_ref_mod_template,
 		__entry->val = v;
 	),
 
-	TP_printk("pfn=0x%lx flags=%s count=%d mapcount=%d mapping=%p mt=%d val=%d",
+	TP_printk("pfn=0x%lx flags=%s count=%d mapcount=%d mapping=%p mt=%s val=%d",
 		__entry->pfn,
 		show_page_flags(__entry->flags & ((1UL << NR_PAGEFLAGS) - 1)),
 		__entry->count,
-		__entry->mapcount, __entry->mapping, __entry->mt,
+		__entry->mapcount, __entry->mapping,
+		migratetype_names[__entry->mt],
 		__entry->val)
 );
 
@@ -86,11 +87,12 @@ DECLARE_EVENT_CLASS(page_ref_mod_and_test_template,
 		__entry->ret = ret;
 	),
 
-	TP_printk("pfn=0x%lx flags=%s count=%d mapcount=%d mapping=%p mt=%d val=%d ret=%d",
+	TP_printk("pfn=0x%lx flags=%s count=%d mapcount=%d mapping=%p mt=%s val=%d ret=%d",
 		__entry->pfn,
 		show_page_flags(__entry->flags & ((1UL << NR_PAGEFLAGS) - 1)),
 		__entry->count,
-		__entry->mapcount, __entry->mapping, __entry->mt,
+		__entry->mapcount, __entry->mapping,
+		migratetype_names[__entry->mt],
 		__entry->val, __entry->ret)
 );
 
-- 
2.17.1