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Subject[PATCH v2 07/11] lockdep: Add file and line to initialize sequence of rwsem (x86)
Date
This patch adds __FILE__ and __LINE__ to lockdep_map of rw_semaphore.
This patch only affects to x86 architecture dependent rwsem.

If this patch is accepted, I'll prepare and send the patch
adds __FILE__ and __LINE__ to rw_semaphore of other architectures
which provides architecture dependent rwsem.h .

Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/include/asm/rwsem.h | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h
index ca7517d..24cbe3a 100644
--- a/arch/x86/include/asm/rwsem.h
+++ b/arch/x86/include/asm/rwsem.h
@@ -74,7 +74,12 @@ struct rw_semaphore {
};

#ifdef CONFIG_DEBUG_LOCK_ALLOC
-# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
+# define __RWSEM_DEP_MAP_INIT(lockname) \
+ , .dep_map = { \
+ .file = __FILE__, \
+ .line = __LINE__, \
+ .name = #lockname, \
+ }
#else
# define __RWSEM_DEP_MAP_INIT(lockname)
#endif
@@ -96,7 +101,7 @@ extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
do { \
static struct lock_class_key __key; \
\
- __init_rwsem((sem), #sem, &__key); \
+ __init_rwsem((sem), #sem, &__key, __FILE__, __LINE__); \
} while (0)

/*
--
1.6.5.2


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