For example,
/sys/kernel/debug/dri/0/i915_hangcheck_info:
Hangcheck active
render ring
seqno = 263844 [current 263960]
action = 2
score = 0
ACTHD = 12809590 [current 1280b5a8]
max ACTHD = 0
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuopp...@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index f91e7f7c92af..a944831d88ab 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1165,6 +1165,37 @@ out:
return ret;
}
+static int i915_hangcheck_info(struct seq_file *m, void *unused)
+{
+ struct drm_info_node *node = m->private;
+ struct drm_i915_private *dev_priv = to_i915(node->minor->dev);
+ struct intel_engine_cs *ring;
+ int ret, i;
+
+ if (!i915.enable_hangcheck) {
+ seq_printf(m, "Hangcheck disabled\n");
+ return 0;
+ }
+
+ seq_printf(m, "Hangcheck %s\n",
+ timer_pending(&dev_priv->gpu_error.hangcheck_timer) ?
"active" : "inactive");
+
+ for_each_ring(ring, dev_priv, i) {
+ seq_printf(m, "%s\n", ring->name);
+ seq_printf(m, "\tseqno = %d [current %d]\n",
+ ring->hangcheck.seqno, ring->get_seqno(ring, false));
+ seq_printf(m, "\taction = %d\n", ring->hangcheck.action);
+ seq_printf(m, "\tscore = %d\n", ring->hangcheck.score);
+ seq_printf(m, "\tACTHD = %llx [current %llx]\n",
+ (long long)ring->hangcheck.acthd,
+ (long long)intel_ring_get_active_head(ring));
+ seq_printf(m, "\tmax ACTHD = %llx\n",
+ (long long)ring->hangcheck.max_acthd);
+ }
+
+ return 0;
+}
+
static int ironlake_drpc_info(struct seq_file *m)
{
struct drm_info_node *node = m->private;
@@ -4276,6 +4307,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
{"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
{"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},
{"i915_frequency_info", i915_frequency_info, 0},
+ {"i915_hangcheck_info", i915_hangcheck_info, 0},
{"i915_drpc_info", i915_drpc_info, 0},
{"i915_emon_status", i915_emon_status, 0},
{"i915_ring_freq_table", i915_ring_freq_table, 0},
--
2.1.3
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