diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_breadcrumbs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_breadcrumbs.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c index d89b2c963618..b074f3d6d127 100644 --- a/drivers/gpu/drm/i915/intel_breadcrumbs.c +++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c @@ -93,6 +93,15 @@ static void __intel_breadcrumbs_enable_irq(struct intel_breadcrumbs *b) if (!b->irq_enabled || test_bit(engine->id, &i915->gpu_error.missed_irq_rings)) mod_timer(&b->fake_irq, jiffies + 1); + + /* Ensure that even if the GPU hangs, we get woken up. + * + * However, note that if no one is waiting, we never notice + * a gpu hang. Eventually, we will have to wait for a resource + * held by the GPU and so trigger a hangcheck. In the most + * pathological case, this will be upon memory starvation! + */ + i915_queue_hangcheck(i915); } static void __intel_breadcrumbs_disable_irq(struct intel_breadcrumbs *b) |
