On 03/19/2013 10:16 PM, Sebastian Andrzej Siewior wrote:
> DEFINE_SRCU() and DEFINE_STATIC_SRCU() does the same thing except for
> the "static" attribute. This patch moves the common pieces into
> _DEFINE_SRCU() which is used by the the former macros either adding the
> static attribute or not.
> 
> Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
> ---
>  include/linux/srcu.h |   10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)

Hi, Sebastian

The patch hurts readability.
The original code are simple enough, merging them as one macro
gives us no benefit.

Thanks
Lai.


> 
> diff --git a/include/linux/srcu.h b/include/linux/srcu.h
> index 6eb691b..d04acb8 100644
> --- a/include/linux/srcu.h
> +++ b/include/linux/srcu.h
> @@ -102,13 +102,13 @@ void process_srcu(struct work_struct *work);
>   * define and init a srcu struct at build time.
>   * dont't call init_srcu_struct() nor cleanup_srcu_struct() on it.
>   */
> -#define DEFINE_SRCU(name)                                            \
> +#define _DEFINE_SRCU(name, mod)                                              
> \
>       static DEFINE_PER_CPU(struct srcu_struct_array, name##_srcu_array);\
> -     struct srcu_struct name = __SRCU_STRUCT_INIT(name);
> +     mod struct srcu_struct name =                                   \
> +                             __SRCU_STRUCT_INIT(name);
>  
> -#define DEFINE_STATIC_SRCU(name)                                     \
> -     static DEFINE_PER_CPU(struct srcu_struct_array, name##_srcu_array);\
> -     static struct srcu_struct name = __SRCU_STRUCT_INIT(name);
> +#define DEFINE_SRCU(name)            _DEFINE_SRCU(name, )
> +#define DEFINE_STATIC_SRCU(name)     _DEFINE_SRCU(name, static)
>  
>  /**
>   * call_srcu() - Queue a callback for invocation after an SRCU grace period

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