On 4/2/20 1:26 AM, Ricardo Cañuelo wrote:
>
>>> + #define pr_fmt(fmt) "%s:%s: " fmt, KBUILD_MODNAME, __func__
>>
>> "fmt" should be last, not first, in order for modname and func to be
>> prefixes.
>
> The way it's used in the pr_*() macros, this is the correct way to get the
> prefixes right.
>
> Example:
>
> pr_emerg("message no. %d", num)
>
> expands to
>
> printk(KERN_EMERG pr_fmt("message no. %d", num)
>
> which expands to
>
> printk(KERN_EMERG "%s:%s: " "message no. %d", KBUILD_MODNAME,
> __func__, num)
I see. Thanks for explaining.
--
~Randy
