On Fri, Feb 17, 2017 at 01:35:15PM +0200, Mika Kuoppala wrote: > Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes: > > > If the waiter was currently running, assume it hasn't had a chance > > to process the pending interupt (e.g, low priority task on a loaded > > system) and wait until it sleeps before declaring a missed interrupt. > > > > References: https://bugs.freedesktop.org/show_bug.cgi?id=99816 > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > > Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> > > Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx> > > --- > > drivers/gpu/drm/i915/intel_breadcrumbs.c | 9 +++++++++ > > 1 file changed, 9 insertions(+) > > > > diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c > > index 4395b177493e..2ad29fb77b2d 100644 > > --- a/drivers/gpu/drm/i915/intel_breadcrumbs.c > > +++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c > > @@ -45,6 +45,15 @@ static void intel_breadcrumbs_hangcheck(unsigned long data) > > return; > > } > > > > + /* If the waiter was currently running, assume it hasn't had a chance > > + * to process the pending interupt (e.g, low priority task on a loaded > > + * system) and wait until it sleeps before declaring a missed interrupt. > > + */ > > + if (!intel_engine_wakeup(engine)) { > > But this will happen if there is waiter running, or that there is > no waiter at all. > > Don't we need to exclude the latter? We already exclude the latter by cancelling this timer above. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
