Re: [PATCH 03/12] mm, slub: disable SYSFS support with CONFIG_SLUB_TINY

[Vlastimil Babka]

On 11/24/22 02:12, Roman Gushchin wrote:
> On Mon, Nov 21, 2022 at 06:11:53PM +0100, Vlastimil Babka wrote:
>> Currently SLUB enables its sysfs support depending unconditionally on
>> the general CONFIG_SYSFS setting. To reduce the configuration
>> combination space, make CONFIG_SLUB_TINY disable SLUB's sysfs support by
>> reusing the existing SLAB_SUPPORTS_SYSFS define. It is unlikely that
>> real tiny systems would combine CONFIG_SLUB_TINY with CONFIG_SYSFS, but
>> a randconfig might.
> 
> Hm, don't we want to introduce CONFIG_SLAB_SYSFS instead?
> I believe many users don't really need it, even if they don't
> need CONFIG_SLUB_TINY and they do have CONFIG_SYSFS.

Dunno, adding more and more config options is generally frowned upon. Also
tools might be using it to get more details than /proc/slabinfo does - i.e.
tools/vm/slabinfo.c

> Thanks!