Re: [PATCH 5/8] drm/i915/tracepoints: Add request submit and execute tracepoints

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On Tue, Feb 21, 2017 at 10:14:12AM +0000, Tvrtko Ursulin wrote:
> 
> 
> On 21/02/2017 09:41, Chris Wilson wrote:
> >On Tue, Feb 21, 2017 at 09:13:47AM +0000, Tvrtko Ursulin wrote:
> >>@@ -468,6 +469,7 @@ execute_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
> >>
> >> 	switch (state) {
> >> 	case FENCE_COMPLETE:
> >>+		trace_i915_gem_request_execute(request);
> >> 		break;
> >
> >Move to __i915_gem_request_submit(). (One less complication for me).
> 
> Ack.
> 
> >I guess you are thinking of changing its name to
> >__i915_gem_request_execute().
> 
> No, why? The idea is i915_gem_request_submit -> "ready for execution
> / dependencies resolved" and i915_gem_request_execute -> "about to
> be submitted to execution backend".

Right. Only "i915_gem_request_execute" is currently called
__i915_gem_request_submit().

add_request ->
  [deps complete] ->
    submit_notify ->
      backend->submit() ->
	[some time passes] ->
	  __i915_gem_request_submit() 

You've convinced me that __i915_gem_request_execute is a step forward
from __i915_gem_request_submit.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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