Re: [PATCH v5 4/6] drm/i915: add rcs topology to error state

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On 16/01/18 13:57, Chris Wilson wrote:
Quoting Lionel Landwerlin (2018-01-16 13:40:08)
This might be useful information for developers looking at an error
state.

v2: Place topology towards the end of the error state (Chris)

v3: Reuse common printing code (Michal)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
  drivers/gpu/drm/i915/i915_gpu_error.c | 9 +++++++++
  1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 944059322daa..aaa34a2bebe1 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -605,6 +605,14 @@ static void err_print_uc(struct drm_i915_error_state_buf *m,
         print_error_obj(m, NULL, "GuC log buffer", error_uc->guc_log);
  }
+static void err_print_rcs_topology(struct drm_i915_error_state_buf *m,
+                                  const struct sseu_dev_info *sseu)
+{
+       struct drm_printer p = i915_error_printer(m);
+
+       intel_device_info_dump_topology(sseu, &p);
+}
+
  int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
                             const struct i915_gpu_state *error)
  {
@@ -787,6 +795,7 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
                 intel_display_print_error_state(m, error->display);
err_print_capabilities(m, &error->device_info);
+       err_print_rcs_topology(m, &INTEL_INFO(dev_priv)->sseu);
Did we not acquire a copy of sseu via error->device_info above? Looks
like this would be a one-liner to print-caps.
-Chris

Sold.

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