[PATCH 02/21] drm/i915/selftests: Live tests emit requests and so require rpm

Chris Wilson chris at chris-wilson.co.uk
Mon Sep 17 11:06:50 UTC 2018


As we emit requests or touch HW directly for some of the live tests, the
requirement is that we hold the rpm wakeref before doing so. We want a
mix of granularity since we will want to test runtime suspend, so try to
mark up only the critical sections where we need rpm for the live test.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/selftests/i915_gem_coherency.c | 2 ++
 drivers/gpu/drm/i915/selftests/i915_gem_context.c   | 4 ++++
 drivers/gpu/drm/i915/selftests/i915_request.c       | 8 ++++++++
 drivers/gpu/drm/i915/selftests/intel_guc.c          | 4 ++++
 drivers/gpu/drm/i915/selftests/intel_lrc.c          | 8 ++++++++
 drivers/gpu/drm/i915/selftests/intel_workarounds.c  | 5 +++++
 6 files changed, 31 insertions(+)

diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_coherency.c b/drivers/gpu/drm/i915/selftests/i915_gem_coherency.c
index 4e6a221063ac..f7392c1ffe75 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_coherency.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_coherency.c
@@ -298,6 +298,7 @@ static int igt_gem_coherency(void *arg)
 	values = offsets + ncachelines;
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
 	for (over = igt_coherency_mode; over->name; over++) {
 		if (!over->set)
 			continue;
@@ -375,6 +376,7 @@ static int igt_gem_coherency(void *arg)
 		}
 	}
 unlock:
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 	kfree(offsets);
 	return err;
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
index 1c92560d35da..79f9bcaf0c05 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
@@ -636,6 +636,8 @@ static int igt_switch_to_kernel_context(void *arg)
 	 */
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
+
 	ctx = kernel_context(i915);
 	if (IS_ERR(ctx)) {
 		mutex_unlock(&i915->drm.struct_mutex);
@@ -658,6 +660,8 @@ static int igt_switch_to_kernel_context(void *arg)
 	GEM_TRACE_DUMP_ON(err);
 	if (igt_flush_test(i915, I915_WAIT_LOCKED))
 		err = -EIO;
+
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 
 	kernel_context_close(ctx);
diff --git a/drivers/gpu/drm/i915/selftests/i915_request.c b/drivers/gpu/drm/i915/selftests/i915_request.c
index c4aac6141e04..07e557815308 100644
--- a/drivers/gpu/drm/i915/selftests/i915_request.c
+++ b/drivers/gpu/drm/i915/selftests/i915_request.c
@@ -342,6 +342,7 @@ static int live_nop_request(void *arg)
 	 */
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
 
 	for_each_engine(engine, i915, id) {
 		struct i915_request *request = NULL;
@@ -402,6 +403,7 @@ static int live_nop_request(void *arg)
 	}
 
 out_unlock:
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 	return err;
 }
@@ -487,6 +489,7 @@ static int live_empty_request(void *arg)
 	 */
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
 
 	batch = empty_batch(i915);
 	if (IS_ERR(batch)) {
@@ -550,6 +553,7 @@ static int live_empty_request(void *arg)
 	i915_vma_unpin(batch);
 	i915_vma_put(batch);
 out_unlock:
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 	return err;
 }
@@ -644,6 +648,7 @@ static int live_all_engines(void *arg)
 	 */
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
 
 	err = begin_live_test(&t, i915, __func__, "");
 	if (err)
@@ -726,6 +731,7 @@ static int live_all_engines(void *arg)
 	i915_vma_unpin(batch);
 	i915_vma_put(batch);
 out_unlock:
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 	return err;
 }
@@ -747,6 +753,7 @@ static int live_sequential_engines(void *arg)
 	 */
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
 
 	err = begin_live_test(&t, i915, __func__, "");
 	if (err)
@@ -853,6 +860,7 @@ static int live_sequential_engines(void *arg)
 		i915_request_put(request[id]);
 	}
 out_unlock:
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 	return err;
 }
diff --git a/drivers/gpu/drm/i915/selftests/intel_guc.c b/drivers/gpu/drm/i915/selftests/intel_guc.c
index 90ba88c972cf..0c0ab82b6228 100644
--- a/drivers/gpu/drm/i915/selftests/intel_guc.c
+++ b/drivers/gpu/drm/i915/selftests/intel_guc.c
@@ -142,6 +142,7 @@ static int igt_guc_clients(void *args)
 
 	GEM_BUG_ON(!HAS_GUC(dev_priv));
 	mutex_lock(&dev_priv->drm.struct_mutex);
+	intel_runtime_pm_get(dev_priv);
 
 	guc = &dev_priv->guc;
 	if (!guc) {
@@ -269,6 +270,7 @@ static int igt_guc_clients(void *args)
 	guc_clients_create(guc);
 	guc_clients_doorbell_init(guc);
 unlock:
+	intel_runtime_pm_put(dev_priv);
 	mutex_unlock(&dev_priv->drm.struct_mutex);
 	return err;
 }
@@ -287,6 +289,7 @@ static int igt_guc_doorbells(void *arg)
 
 	GEM_BUG_ON(!HAS_GUC(dev_priv));
 	mutex_lock(&dev_priv->drm.struct_mutex);
+	intel_runtime_pm_get(dev_priv);
 
 	guc = &dev_priv->guc;
 	if (!guc) {
@@ -379,6 +382,7 @@ static int igt_guc_doorbells(void *arg)
 			guc_client_free(clients[i]);
 		}
 unlock:
+	intel_runtime_pm_put(dev_priv);
 	mutex_unlock(&dev_priv->drm.struct_mutex);
 	return err;
 }
diff --git a/drivers/gpu/drm/i915/selftests/intel_lrc.c b/drivers/gpu/drm/i915/selftests/intel_lrc.c
index 582566faef09..1aea7a8f2224 100644
--- a/drivers/gpu/drm/i915/selftests/intel_lrc.c
+++ b/drivers/gpu/drm/i915/selftests/intel_lrc.c
@@ -221,6 +221,7 @@ static int live_sanitycheck(void *arg)
 		return 0;
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
 
 	if (spinner_init(&spin, i915))
 		goto err_unlock;
@@ -261,6 +262,7 @@ static int live_sanitycheck(void *arg)
 	spinner_fini(&spin);
 err_unlock:
 	igt_flush_test(i915, I915_WAIT_LOCKED);
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 	return err;
 }
@@ -278,6 +280,7 @@ static int live_preempt(void *arg)
 		return 0;
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
 
 	if (spinner_init(&spin_hi, i915))
 		goto err_unlock;
@@ -350,6 +353,7 @@ static int live_preempt(void *arg)
 	spinner_fini(&spin_hi);
 err_unlock:
 	igt_flush_test(i915, I915_WAIT_LOCKED);
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 	return err;
 }
@@ -368,6 +372,7 @@ static int live_late_preempt(void *arg)
 		return 0;
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
 
 	if (spinner_init(&spin_hi, i915))
 		goto err_unlock;
@@ -440,6 +445,7 @@ static int live_late_preempt(void *arg)
 	spinner_fini(&spin_hi);
 err_unlock:
 	igt_flush_test(i915, I915_WAIT_LOCKED);
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 	return err;
 
@@ -467,6 +473,7 @@ static int live_preempt_hang(void *arg)
 		return 0;
 
 	mutex_lock(&i915->drm.struct_mutex);
+	intel_runtime_pm_get(i915);
 
 	if (spinner_init(&spin_hi, i915))
 		goto err_unlock;
@@ -561,6 +568,7 @@ static int live_preempt_hang(void *arg)
 	spinner_fini(&spin_hi);
 err_unlock:
 	igt_flush_test(i915, I915_WAIT_LOCKED);
+	intel_runtime_pm_put(i915);
 	mutex_unlock(&i915->drm.struct_mutex);
 	return err;
 }
diff --git a/drivers/gpu/drm/i915/selftests/intel_workarounds.c b/drivers/gpu/drm/i915/selftests/intel_workarounds.c
index 0d39b3bf0c0d..d1a0923d2f38 100644
--- a/drivers/gpu/drm/i915/selftests/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/selftests/intel_workarounds.c
@@ -44,7 +44,9 @@ read_nonprivs(struct i915_gem_context *ctx, struct intel_engine_cs *engine)
 	if (err)
 		goto err_obj;
 
+	intel_runtime_pm_get(engine->i915);
 	rq = i915_request_alloc(engine, ctx);
+	intel_runtime_pm_put(engine->i915);
 	if (IS_ERR(rq)) {
 		err = PTR_ERR(rq);
 		goto err_pin;
@@ -175,7 +177,10 @@ static int switch_to_scratch_context(struct intel_engine_cs *engine)
 	if (IS_ERR(ctx))
 		return PTR_ERR(ctx);
 
+	intel_runtime_pm_get(engine->i915);
 	rq = i915_request_alloc(engine, ctx);
+	intel_runtime_pm_put(engine->i915);
+
 	kernel_context_close(ctx);
 	if (IS_ERR(rq))
 		return PTR_ERR(rq);
-- 
2.19.0



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