linux-kernel - Re: [PATCH] arc/Kconfig: include mm/Kconfig inside "ARC system configuration"

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Date:   Fri, 29 Jun 2018 13:37:34 -0700
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Randy Dunlap <rdunlap@...radead.org>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>
CC:     lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arc/Kconfig: include mm/Kconfig inside "ARC system
 configuration"

On 06/29/2018 01:29 PM, Randy Dunlap wrote:
> On 06/29/2018 12:28 PM, Mike Rapoport wrote:
>> Hi Randy, 
>>
>> On Fri, Jun 29, 2018 at 09:34:55AM -0700, Randy Dunlap wrote:
>>> On 06/29/2018 06:42 AM, Mike Rapoport wrote:
>>>> Otherwise mm configuration options show up in the top level menu.
>>>>
>>>> Signed-off-by: Mike Rapoport <rppt@...ux.vnet.ibm.com>
>>> Hi Mike,
>>>
>>> In which config tool does this matter?
>>>
>>> For xconfig, it seems to me that this patch hides the MM menu, whereas
>>> before this patch, the MM menu is easy to find (although it could
>>> use some kind of heading).
>> With xconfig the menu gets into the top right pane when you click on "ARC
>> architecture configuration", similar to what one gets on x86 with
>> "Processor type and features" or "Kernel features" on ARM.
>>
>> With menuconfig it looks a bit more prominent, note that mm options are
>> between "ARC Architecture Configuration" and "Networking support":
> I know.  I ran all 4 of menuconfig, nconfig, xconfig, and gconfig.
>
> I would prefer to see Memory Management options have its own top-level
> menu, but that's a different patch.  Then menuconfig would look like this:
>
>
>
> │ │        *** Compiler: arc-linux-gcc (GCC) 8.1.0 ***                  │ │  
>   │ │        General setup  --->                                          │ │  
>   │ │    [*] Enable loadable module support  --->                         │ │  
>   │ │    [*] Enable the block layer  --->                                 │ │  
>   │ │        ARC Architecture Configuration  --->                         │ │  
>   │ │        Memory Management options  --->                              │ │  
>   │ │    (11) Maximum zone order                                          │ │  
>   │ │    [*] Networking support  --->                                     │ │  
>   │ │        Device Drivers  --->                                         │ │  
>   │ │        Bus Support  ---> 

Indeed I realized after applying that we are cluttering the mm stuff inside ARC.

So I don't see real net improvement with this patch/

> but that "Maximum zone order" needs to be moved or taken care of somehow.

Right this is mm specific option which is provided for by arch. And even a
redirector like ARCH_HAS_FORCE_MAX and moving this to generic mm won't cut it
since the option values are arch specific !

-Vineet