[PATCH 3/8] jump_label: introduce DEFINE_STATIC_KEY_{TRUE,FALSE}_ARRAY macros

Ingo Molnar mingo at kernel.org
Fri Aug 21 16:28:26 AEST 2015


* Kevin Hao <haokexin at gmail.com> wrote:

> These are used to define a static_key_{true,false} array.
> 
> Signed-off-by: Kevin Hao <haokexin at gmail.com>
> ---
>  include/linux/jump_label.h | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h
> index 7f653e8f6690..5c1d6a49dd6b 100644
> --- a/include/linux/jump_label.h
> +++ b/include/linux/jump_label.h
> @@ -267,6 +267,12 @@ struct static_key_false {
>  #define DEFINE_STATIC_KEY_FALSE(name)	\
>  	struct static_key_false name = STATIC_KEY_FALSE_INIT
>  
> +#define DEFINE_STATIC_KEY_TRUE_ARRAY(name, n)	\
> +	struct static_key_true name[n] = { [0 ... n - 1] = STATIC_KEY_TRUE_INIT }
> +
> +#define DEFINE_STATIC_KEY_FALSE_ARRAY(name, n)	\
> +	struct static_key_false name[n] = { [0 ... n - 1] = STATIC_KEY_FALSE_INIT }

I think the define makes the code more obfuscated and less clear, the open-coded 
initialization is pretty dense and easy to read to begin with.

Thanks,

	Ingo


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