On Wed, Mar 15, 2017 at 05:43:03PM +0200, Mika Kuoppala wrote: > We have used cz timestamp register to gain a reference time wrt > to residency calculations. The residency counts are in cz clk ticks > (333Mhz clock) but for some reason the cz timestamp register gives > 100us units. Perhaps for some other usage, the base-ten based values > are easier, but in residency calculations raw units would have been > the easiest. > > As there is not much advantage of using base-ten clock through > a more costly punit access, take our reference times directly from > kernel clock. > > v2: use ktime (Chris, Ville) > > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
