Re: [PATCH 0/3] dynamic_hex_dump cleanup

From: Dan Williams
Date: Fri Apr 28 2017 - 17:52:31 EST


On Fri, Apr 28, 2017 at 2:49 PM, Joe Perches <joe@xxxxxxxxxxx> wrote:
> On Fri, 2017-04-28 at 14:28 -0700, Dan Williams wrote:
>> More than one driver has worked around the fact that
>> print_hex_dump_debug() requires CONFIG_DYNAMIC_DEBUG=y to build.
>
> No it doesn't. builds work fine. Output is restricted.
>
>> Provide a dynamic_hex_dump() so that drivers that want the extra debugging to be
>> turned off in the CONFIG_DYNAMIC_DEBUG=n can use dynamic_hex_dump()
>> directly.
>
> I think the concept is unnecessary
> .
> Just use print_hex_dump with KERN_DEBUG.

No, we don't want any possibility of output in the
CONFIG_DYNAMIC_DEBUG=n case. This is extra debug that only makes sense
in the CONFIG_DYNAMIC_DEBUG case.