Re: [PATCH 1/2] drm/ttm: Add TTM_PAGE_FLAG_TRANSHUGE

[Michel DÃnzer]

[ Dropping Roger He, his e-mail address seems to bounce ]

On 2018-04-27 04:51 AM, zhoucm1 wrote:
> On 2018å04æ26æ 23:06, Michel DÃnzer wrote:
>> From: Michel DÃnzer <michel.daenzer@xxxxxxx>
>>
>> When it's set, TTM tries to allocate huge pages if possible.
> Do you mean original driver doesn't do this?
> From the code, driver always try huge pages if
> CONFIG_TRANSPARENT_HUGEPAGE is enabled.

Right, before this change, TTM would do this unconditionally for all
drivers. The point of this change is not to incur any huge page related
overhead for drivers which can't take advantage of huge pages anyway.
I'll try changing the commit log to make this clearer in v2.


-- 
Earthling Michel DÃnzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer