With execlists, we have context objects everywhere, not just RCS. So
store them for post-mortem debugging. This also has a secondary effect
of removing one more unsafe list iteration with using preserved state
from the hanging request. And now we can cross-reference the request's
context state with that loaded by the GPU.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gpu_error.c | 28 ++++------------------------
1 file changed, 4 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 89a82b10c032..983488da742a 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1037,28 +1037,6 @@ static void error_record_engine_registers(struct drm_i915_error_state *error,
}
}
-static void i915_gem_record_active_context(struct intel_engine_cs *engine,
- struct drm_i915_error_state *error,
- struct drm_i915_error_engine *ee)
-{
- struct drm_i915_private *dev_priv = engine->i915;
- struct drm_i915_gem_object *obj;
-
- /* Currently render ring is the only HW context user */
- if (engine->id != RCS || !error->ccid)
- return;
-
- list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
- if (!i915_gem_obj_ggtt_bound(obj))
- continue;
-
- if ((error->ccid & PAGE_MASK) == i915_gem_obj_ggtt_offset(obj)) {
- ee->ctx = i915_error_ggtt_object_create(dev_priv, obj);
- break;
- }
- }
-}
-
static void i915_gem_record_rings(struct drm_i915_private *dev_priv,
struct drm_i915_error_state *error)
{
@@ -1108,6 +1086,10 @@ static void i915_gem_record_rings(struct drm_i915_private *dev_priv,
i915_error_ggtt_object_create(dev_priv,
engine->scratch.obj);
+ ee->ctx =
+ i915_error_ggtt_object_create(dev_priv,
+ request->ctx->engine[i].state);
+
if (request->pid) {
struct task_struct *task;
@@ -1138,8 +1120,6 @@ static void i915_gem_record_rings(struct drm_i915_private *dev_priv,
ee->wa_ctx = i915_error_ggtt_object_create(dev_priv,
engine->wa_ctx.obj);
- i915_gem_record_active_context(engine, error, ee);
-
count = 0;
list_for_each_entry(request, &engine->request_list, link)
count++;
--
2.8.1
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