linux-kernel - [PATCH] Add "nested" field to event of lock

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Date:	Sat, 10 Apr 2010 19:41:40 +0900
From:	Hitoshi Mitake <mitake@....info.waseda.ac.jp>
To:	mingo@...e.hu
Cc:	linux-kernel@...r.kernel.org, mitake@....info.waseda.ac.jp,
	h.mitake@...il.com, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH] Add "nested" field to event of lock_release

State machine of perf lock requires "nested" field of lock_release(),
so this patch adds it to event.

Signed-off-by: Hitoshi Mitake <mitake@....info.waseda.ac.jp>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>

---
 include/trace/events/lock.h |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/trace/events/lock.h b/include/trace/events/lock.h
index 5c1dcfc..4f489b5 100644
--- a/include/trace/events/lock.h
+++ b/include/trace/events/lock.h
@@ -44,15 +44,17 @@ TRACE_EVENT(lock_release,
 	TP_STRUCT__entry(
 		__string(name, lock->name)
 		__field(void *, lockdep_addr)
+		__field(int, nested)
 	),
 
 	TP_fast_assign(
 		__assign_str(name, lock->name);
 		__entry->lockdep_addr = lock;
+		__entry->nested = nested;
 	),
 
-	TP_printk("%p %s",
-		  __entry->lockdep_addr, __get_str(name))
+	TP_printk("%p %s %d",
+		  __entry->lockdep_addr, __get_str(name), __entry->nested)
 );
 
 #ifdef CONFIG_LOCK_STAT
-- 
1.6.5.2

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