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

From: Hitoshi Mitake
Date: Sun Mar 14 2010 - 06:41:20 EST


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@xxxxxxxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
Cc: Jason Baron <jbaron@xxxxxxxxxx>
---
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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