Quoting Mika Kuoppala (2018-12-03 12:09:39)
> Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:
>
> > If all else fails and we are stuck eternally waiting for the undying
> > request, abandon all hope.
> >
> > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/selftests/intel_hangcheck.c | 12 +++++++++---
> > 1 file changed, 9 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
> > index defe671130ab..a48fbe2557ea 100644
> > --- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
> > +++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
> > @@ -308,6 +308,7 @@ static int igt_hang_sanitycheck(void *arg)
> > goto unlock;
> >
> > for_each_engine(engine, i915, id) {
> > + struct igt_wedge_me w;
> > long timeout;
> >
> > if (!intel_engine_can_store_dword(engine))
> > @@ -328,9 +329,14 @@ static int igt_hang_sanitycheck(void *arg)
> >
> > i915_request_add(rq);
> >
> > - timeout = i915_request_wait(rq,
> > - I915_WAIT_LOCKED,
> > - MAX_SCHEDULE_TIMEOUT);
> > + timeout = 0;
> > + igt_wedge_on_timeout(&w, i915, HZ / 10 /* 100ms timeout*/)
>
> 100ms? We are emitting a hanging batch here, so there is something
> I am missing here.
It's not a hanging batch, anymore due to the terminator applied a couple
of lines above.
-Chris
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