linux-kernel - Re: drm/amdkfd: bad CONFIG_ prefix for enum entries

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Message-ID: <CADnq5_NyGMFC=SFg-tou4CSJV7GPD44HF=GDTF2kmSQfJW+2zA@mail.gmail.com>
Date:	Thu, 4 Jun 2015 11:09:16 -0400
From:	Alex Deucher <alexdeucher@...il.com>
To:	Valentin Rothberg <valentinrothberg@...il.com>
Cc:	Oded Gabbay <oded.gabbay@...il.com>, yair.shachar@....com,
	Paul Bolle <pebolle@...cali.nl>,
	Andreas Ruprecht <andreas.ruprecht@....de>,
	Maling list - DRI developers 
	<dri-devel@...ts.freedesktop.org>,
	LKML <linux-kernel@...r.kernel.org>,
	hengelein Stefan <stefan.hengelein@....de>
Subject: Re: drm/amdkfd: bad CONFIG_ prefix for enum entries

On Thu, Jun 4, 2015 at 10:04 AM, Valentin Rothberg
<valentinrothberg@...il.com> wrote:
> Hi Alex,
>
> On Thu, Jun 4, 2015 at 4:01 PM, Alex Deucher <alexdeucher@...il.com> wrote:
>> On Thu, Jun 4, 2015 at 9:48 AM, Oded Gabbay <oded.gabbay@...il.com> wrote:
>>> Hi Valentin,
>>> Thanks for catching that.
>>> I would be grateful if you could fix this yourself.
>>
>> Please try and keep CONFIG in the name since this range of registers
>> are called CONFIG registers.
>
> I cannot force changing those symbols, but point out that it's
> violating naming conventions.  I would suggest to s/CONFIG_/CONF_/ to
> make clear that it's config registers.  Would you be fine with that?

What about something like AMD_CONFIG_REG?

>
> Kind regards,
>  Valentin
>
>> Alex
>>
>>>
>>> Oded
>>>
>>> On Thu, Jun 4, 2015 at 4:45 PM Valentin Rothberg
>>> <valentinrothberg@...il.com> wrote:
>>>>
>>>> Hi Yair,
>>>>
>>>> your commit fbeb661bfa89 ("drm/amdkfd: Add skeleton H/W debugger
>>>> module support") has shown up in today's linux-next tree (i.e.,
>>>> next-20150604).  The commit adds the following lines of code to
>>>> drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.h:
>>>>
>>>> +/* CONFIG reg space definition */
>>>> +enum {
>>>> +       CONFIG_REG_BASE = 0x2000,       /* in dwords */
>>>> +       CONFIG_REG_END = 0x2B00,
>>>> +       CONFIG_REG_SIZE = CONFIG_REG_END - CONFIG_REG_BASE
>>>> +};
>>>>
>>>> There is a problem with the 'CONFIG_' prefix of those entries.  This
>>>> prefix is reserved for Kconfig options in Make/Kbuild and CPP syntax,
>>>> so that static analysis tools (and readers of the code) may mistakenly
>>>> assume that the symbol is defined somewhere in a Kconfig file.
>>>>
>>>> I detected the issue with ./scripts/checkkconfigsymbols.py.  Would you
>>>> mind renaming those entries to something without the 'CONFIG_' prefix?
>>>>  I can also take care of it if you wish to.
>>>>
>>>> Kind regards,
>>>>  Valentin
>>>
>>>
>>> _______________________________________________
>>> dri-devel mailing list
>>> dri-devel@...ts.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/dri-devel
>>>
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