Re: [PATCH -mm] do not check condition twice in WARN_ON_SECS

[Johannes Weiner]

Hi Dave,

Dave Young <hidave.darkstar@xxxxxxxxx> writes:

> Don't check condition twice, change WARN_ON(condition) to WARN_ON(1)
> Thanks Marcin Slusarz <marcin.slusarz@xxxxxxxxx> for pointing out
>
> Signed-off-by: Dave Young <hidave.darkstar@xxxxxxxxx>
>
> ---
> include/asm-generic/bug.h |    3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff -upr linux/include/asm-generic/bug.h linux.new/include/asm-generic/bug.h
> --- linux/include/asm-generic/bug.h	2008-03-12 08:45:08.000000000 +0800
> +++ linux.new/include/asm-generic/bug.h	2008-03-12 09:04:07.000000000 +0800
> @@ -80,7 +80,8 @@ extern void warn_on_slowpath(const char 
>  	int __ret_warn_on = !!(condition);			\
>  	if (unlikely(__ret_warn_on))				\
>  		if (__ratelimit(secs * HZ, 1))			\
> -			WARN_ON(condition);			\
> +			WARN_ON(1);				\
> +	unlikely(__ret_warn_on);				\
>  })

What's wrong with:

#define WARN_ON_SECS(condition, secs) \
	WARN_ON(condition && __ratelimit(secs * HZ, 1))

?

	Hannes
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/