Marc Andre Tanner wrote:
> Thanks, so if I understood it correctly this should be used like this:
>
> #define PRINTK_FILTER(fmt) (
> \
> (((const char *)(fmt))[0] != '<' && CONFIG_PRINTK_VERBOSITY >= 4) ||
> \
> (((const char *)(fmt))[0] == '<' &&
> \
> ((const char *)(fmt))[1] <= *__stringify(CONFIG_PRINTK_VERBOSITY))
> \
> )
>
> #define printk(fmt, ...) ({
> \
> if (__builtin_constant_p(PRINTK_FILTER(fmt)) && PRINTK_FILTER(fmt))
> \
> printk((fmt), ##__VA_ARGS__);
> \
> })
>
> The sizeof check wouldn't be necessary. Is this correct?
Looks good, except that I think kernel style is to use "do {...} while
(0)" rather than "({ ... })"
-- Jamie
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