[Intel-gfx] [PATCH v3] drm/i915: Remove local timeline var from submit/unsubmit

[Chris Wilson]

Quoting Mika Kuoppala (2018-03-22 13:24:13)
> Chris Wilson <chris at chris-wilson.co.uk> writes:
> 
> > Both request_submit and request_unsubmit deal with transferring the
> > request from the client's timeline onto the execution timeline and back
> > again. As both functions deal with a pair of timeline's, using a
> > shorthand for just one of them is slightly confusing, especially as the
> 
> The amount confusion is correlated with readers previous knowledge about
> timelines. Slightly is an understatement for the newcomers but
> we can accept that as a good amount of confusion, on average.
> 
> > different functions use the shorthand for the alternate timeline.
> > Instead, use the full version of each timeline so it should be easier to
> > keep track of the transfer between the request/client and the engine.
> >
> 
> I pondered if the comment can even be removed on this, much
> easier to read, version. But as the comment gives a
> proper names to timelines, it has value.
> 
> Only one thing remains is that should the 'client's timeline'
> be changed to 'per context timeline' on this commit msg,
> to reflect the comment in the code.

I use client/context quite interchangeably. Every context is a client,
but a client may have more than one context.

I should probably avoid "client" altogether since we only have fd and
contexts, and a hint of process (which is more or less limited to mmu,
more or less meaningless when we look at the GPU structs).
-Chris