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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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