[Intel-gfx] [RFC 02/10] drm: Update file owner during use

[Emil Velikov]

Hi Tvrtko

Sorry for the delay, real life and other obligations got in the way.

On Thu, 8 Jun 2023 at 15:26, Tvrtko Ursulin
<tvrtko.ursulin at linux.intel.com> wrote:
> On 21/04/2023 13:13, Emil Velikov wrote:

> Are you okay if I just paste your very fine explanation verbatim, with
> credits?
>

Yes, feel free to use as much of if as you see reasonable.

> > I also had a brief look at 01/10, although I cannot find many
> > references for the pid <> tguid mappings. Be that on the kernel side
> > or userspace - do you have any links that I can educate myself?
>
> TGID or thread group leader. For single threaded userspace TGID equals
> to PID, while for multi-threaded first thread TGID equals PID/TID, while
> additional threads PID/TID does not equal TGID. Clear, as mud? :) My
> POSIX book is misplaced somewhere having not consulted it years... :)
>

Ack. /me looks into actually buying one, perhaps

Thanks
Emil