linux-kernel - [PATCH 07/10] tracing: Drop the nested field from lock

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Date:	Sun,  9 May 2010 22:43:35 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Hitoshi Mitake <mitake@....info.waseda.ac.jp>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: [PATCH 07/10] tracing: Drop the nested field from lock_release event

Drop the nested field as we don't use it. Every nested state can
be computed from a state machine on post processing already.

Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Hitoshi Mitake <mitake@....info.waseda.ac.jp>
Cc: Steven Rostedt <rostedt@...dmis.org>
---
 include/trace/events/lock.h |    4 ++--
 kernel/lockdep.c            |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/trace/events/lock.h b/include/trace/events/lock.h
index 17ca287..fde4c38 100644
--- a/include/trace/events/lock.h
+++ b/include/trace/events/lock.h
@@ -37,9 +37,9 @@ TRACE_EVENT(lock_acquire,
 
 TRACE_EVENT(lock_release,
 
-	TP_PROTO(struct lockdep_map *lock, int nested, unsigned long ip),
+	TP_PROTO(struct lockdep_map *lock, unsigned long ip),
 
-	TP_ARGS(lock, nested, ip),
+	TP_ARGS(lock, ip),
 
 	TP_STRUCT__entry(
 		__string(name, lock->name)
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 31e22e7..e9c759f 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -3227,7 +3227,7 @@ void lock_release(struct lockdep_map *lock, int nested,
 	raw_local_irq_save(flags);
 	check_flags(flags);
 	current->lockdep_recursion = 1;
-	trace_lock_release(lock, nested, ip);
+	trace_lock_release(lock, ip);
 	__lock_release(lock, nested, ip);
 	current->lockdep_recursion = 0;
 	raw_local_irq_restore(flags);
-- 
1.6.2.3

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