[Nouveau] [PATCH 0/7] Per client engine busyness

Tvrtko Ursulin
Tue, 18 May 2021 09:08:59 -0000

On 17/05/2021 20:03, Simon Ser wrote:
> On Monday, May 17th, 2021 at 8:16 PM, Nieto, David M <David.Nieto at
amd.com> wrote:
>
>> Btw is DRM_MAJOR 226 consider uapi? I don't see it in uapi headers.
>
> It's not in the headers, but it's de facto uAPI, as seen in libdrm:
>
>      > git grep 226
>      xf86drm.c
>      99:#define DRM_MAJOR 226 /* Linux */

I suspected it would be yes, thanks.

I was just wondering if stat(2) and a chrdev major check would be a
solid criteria to more efficiently (compared to parsing the text
content) detect drm files while walking procfs.

Regards,

Tvrtko