Quoting Tvrtko Ursulin (2019-11-29 10:54:36) > From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> > > We used to report the minimum possible frequency as both requested and > active while GPU was in sleep state. This was a consequence of sampling > the value from the "current frequency" field in our software tracking. > > This was strictly speaking wrong, but given that until recently the > current frequency in sleeping state used to be equal to minimum, it did > not stand out sufficiently to be noticed as such. > > After some recent changes have made the current frequency be reported > as last active before GPU went to sleep, meaning both requested and active > frequencies could end up being reported at their maximum values for the > duration of the GPU idle state, it became much more obvious that this does > not make sense. > > To fix this we will now sample the frequency counters only when the GPU is > awake. As a consequence reported frequencies could be reported as below > the GPU reported minimum but that should be much less confusing that the > current situation. > > v2: > * Split out early exit conditions for readability. (Chris) > Closes: https://gitlab.freedesktop.org/drm/intel/issues/675 > Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> > Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
