linux-kernel - [PATCH RFC 06/11] Adopt rwsem of x86 to lock monitor

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Message-Id: <1268563128-6486-7-git-send-email-mitake@dcl.info.waseda.ac.jp>
Date:	Sun, 14 Mar 2010 19:38:43 +0900
From:	Hitoshi Mitake <mitake@....info.waseda.ac.jp>
To:	fweisbec@...il.com
Cc:	linux-kernel@...r.kernel.org, mitake@....info.waseda.ac.jp,
	h.mitake@...il.com, Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Jens Axboe <jens.axboe@...cle.com>,
	Jason Baron <jbaron@...hat.com>
Subject: [PATCH RFC 06/11] Adopt rwsem of x86 to lock monitor

Current struct rw_semaphore holds struct lockdep_map,
but it is a special thing of lockdep subsystem.

So I replaced it with struct lock_monitor.
Now it contains lockdep_map, and adding new members is easy.

Signed-off-by: Hitoshi Mitake <mitake@....info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Jens Axboe <jens.axboe@...cle.com>
Cc: Jason Baron <jbaron@...hat.com>
---
 arch/x86/include/asm/rwsem.h |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h
index ca7517d..a6862f1 100644
--- a/arch/x86/include/asm/rwsem.h
+++ b/arch/x86/include/asm/rwsem.h
@@ -68,22 +68,22 @@ struct rw_semaphore {
 	signed long		count;
 	spinlock_t		wait_lock;
 	struct list_head	wait_list;
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-	struct lockdep_map dep_map;
+#ifdef CONFIG_LOCK_MONITOR
+	struct lock_monitor     monitor;
 #endif
 };
 
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
+#ifdef CONFIG_LOCK_MONITOR
+# define __RWSEM_LOCK_MONITOR_INIT(lockname) , .monitor = { __LOCK_MONITOR_INIT(lockname) }
 #else
-# define __RWSEM_DEP_MAP_INIT(lockname)
+# define __RWSEM_LOCK_MONITOR_INIT(lockname)
 #endif
 
 
 #define __RWSEM_INITIALIZER(name)				\
 {								\
 	RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \
-	LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) \
+	LIST_HEAD_INIT((name).wait_list) __RWSEM_LOCK_MONITOR_INIT(name) \
 }
 
 #define DECLARE_RWSEM(name)					\
-- 
1.6.5.2

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