Re: [PATCH] drm/i915/guc: don't hardcode BCS0 in guc_hang selftest

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LGTM Acked-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>

On 11/2/2022 10:43 PM, Daniele Ceraolo Spurio wrote:
On MTL there are no BCS engines on the media GT, so we can't always use
BCS0 in the test. There is no actual reason to use a BCS engine over an
engine of a different class, so switch to using any available engine.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: John Harrison <John.C.Harrison@xxxxxxxxx>
---
  drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c | 8 +++++---
  1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c b/drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c
index 01f8cd3c3134..d91b58f70403 100644
--- a/drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c
@@ -35,11 +35,14 @@ static int intel_hang_guc(void *arg)
  	struct i915_request *rq;
  	intel_wakeref_t wakeref;
  	struct i915_gpu_error *global = &gt->i915->gpu_error;
-	struct intel_engine_cs *engine;
+	struct intel_engine_cs *engine = intel_selftest_find_any_engine(gt);
  	unsigned int reset_count;
  	u32 guc_status;
  	u32 old_beat;
+ if (!engine)
+		return 0;
+
  	ctx = kernel_context(gt->i915, NULL);
  	if (IS_ERR(ctx)) {
  		drm_err(&gt->i915->drm, "Failed get kernel context: %ld\n", PTR_ERR(ctx));
@@ -48,14 +51,13 @@ static int intel_hang_guc(void *arg)
wakeref = intel_runtime_pm_get(gt->uncore->rpm); - ce = intel_context_create(gt->engine[BCS0]);
+	ce = intel_context_create(engine);
  	if (IS_ERR(ce)) {
  		ret = PTR_ERR(ce);
  		drm_err(&gt->i915->drm, "Failed to create spinner request: %d\n", ret);
  		goto err;
  	}
- engine = ce->engine;
  	reset_count = i915_reset_count(global);
old_beat = engine->props.heartbeat_interval_ms;



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