drm/i915: include hangcheck action and score in error_state
Score and action reveals what all the rings were doing
and why hang was declared. Add idle state so that
we can distinguish between waiting and idle ring.
v2: - add idle as a hangcheck action
- consensed hangcheck status to single line (Chris)
- mark active explicitly when we are making progress (Chris)
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 9e48cf2..5350ef5 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1975,6 +1975,8 @@
if (ring->hangcheck.seqno == seqno) {
if (ring_idle(ring, seqno)) {
+ ring->hangcheck.action = HANGCHECK_IDLE;
+
if (waitqueue_active(&ring->irq_queue)) {
/* Issue a wake-up to catch stuck h/w. */
DRM_ERROR("Hangcheck timer elapsed... %s idle\n",
@@ -2003,6 +2005,7 @@
acthd);
switch (ring->hangcheck.action) {
+ case HANGCHECK_IDLE:
case HANGCHECK_WAIT:
break;
case HANGCHECK_ACTIVE:
@@ -2018,6 +2021,8 @@
}
}
} else {
+ ring->hangcheck.action = HANGCHECK_ACTIVE;
+
/* Gradually reduce the count so that we catch DoS
* attempts across multiple batches.
*/