Chris Wilson <ch...@chris-wilson.co.uk> writes: > If an interrupt has been posted, and we were spinning on the active > seqno waiting for it to advance but it did not, then we can expect that > it will not see its advance in the immediate future
Why we can expect this? -Mika > and should call into > the irq-seqno barrier. We can stop spinning at this point, and leave the > difficulty of handling the coherency to the caller. > > Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> > Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com> > --- > drivers/gpu/drm/i915/i915_gem_request.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/i915/i915_gem_request.c > b/drivers/gpu/drm/i915/i915_gem_request.c > index 7760d7481f85..9e42b2687cae 100644 > --- a/drivers/gpu/drm/i915/i915_gem_request.c > +++ b/drivers/gpu/drm/i915/i915_gem_request.c > @@ -993,6 +993,9 @@ bool __i915_spin_request(const struct > drm_i915_gem_request *req, > seqno)) > return true; > > + if (test_bit(ENGINE_IRQ_BREADCRUMB, &req->engine->irq_posted)) > + break; > + > if (signal_pending_state(state, current)) > break; > > -- > 2.11.0 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
