Very simple tests to just ask eviction to find some free space in a full
GTT and one with some available space.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_evict.c | 4 +
drivers/gpu/drm/i915/selftests/i915_gem_evict.c | 237 +++++++++++++++++++++
.../gpu/drm/i915/selftests/i915_mock_selftests.h | 1 +
3 files changed, 242 insertions(+)
create mode 100644 drivers/gpu/drm/i915/selftests/i915_gem_evict.c
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index f92f63e8749a..c01a9dd6298c 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -383,3 +383,7 @@ int i915_gem_evict_vm(struct i915_address_space *vm, bool do_idle)
return 0;
}
+
+#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
+#include "selftests/i915_gem_evict.c"
+#endif
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
new file mode 100644
index 000000000000..c31e6a6c98cd
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -0,0 +1,237 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include "i915_selftest.h"
+
+#include "mock_gem_device.h"
+
+static int populate_ggtt(struct drm_i915_private *i915)
+{
+ struct drm_i915_gem_object *obj;
+ u64 size;
+
+ for (size = 0; size < i915->ggtt.base.total; size += PAGE_SIZE) {
+ struct i915_vma *vma;
+
+ obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
+ if (IS_ERR(obj))
+ return PTR_ERR(obj);
+
+ vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0);
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
+ }
+
+ if (!list_empty(&i915->mm.unbound_list)) {
+ size = 0;
+ list_for_each_entry(obj, &i915->mm.unbound_list, global_link)
+ size++;
+
+ pr_err("Found %lld objects unbound!\n", size);
+ return -EINVAL;
+ }
+
+ if (list_empty(&i915->ggtt.base.inactive_list)) {
+ pr_err("No objects on the GGTT inactive list!\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void unpin_ggtt(struct drm_i915_private *i915)
+{
+ struct i915_vma *vma;
+
+ list_for_each_entry(vma, &i915->ggtt.base.inactive_list, vm_link)
+ i915_vma_unpin(vma);
+}
+
+static void cleanup_objects(struct drm_i915_private *i915)
+{
+ struct drm_i915_gem_object *obj, *on;
+
+ list_for_each_entry_safe(obj, on, &i915->mm.unbound_list, global_link)
+ i915_gem_object_put(obj);
+
+ list_for_each_entry_safe(obj, on, &i915->mm.bound_list, global_link)
+ i915_gem_object_put(obj);
+
+ mutex_unlock(&i915->drm.struct_mutex);
+
+ rcu_barrier();
+ while (flush_work(&i915->mm.free_work))
+ rcu_barrier();
+
+ mutex_lock(&i915->drm.struct_mutex);
+}
+
+static int igt_evict_something(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct i915_ggtt *ggtt = &i915->ggtt;
+ int err;
+
+ err = populate_ggtt(i915);
+ if (err)
+ goto cleanup;
+
+ err = i915_gem_evict_something(&ggtt->base,
+ PAGE_SIZE, 0, 0,
+ 0, U64_MAX,
+ 0);
+ if (err != -ENOSPC) {
+ pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n",
+ err);
+ goto cleanup;
+ }
+
+ unpin_ggtt(i915);
+
+ err = i915_gem_evict_something(&ggtt->base,
+ PAGE_SIZE, 0, 0,
+ 0, U64_MAX,
+ 0);
+ if (err) {
+ pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n",
+ err);
+ goto cleanup;
+ }
+
+cleanup:
+ cleanup_objects(i915);
+ return err;
+}
+
+static int igt_overcommit(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct drm_i915_gem_object *obj;
+ struct i915_vma *vma;
+ int err;
+
+ err = populate_ggtt(i915);
+ if (err)
+ goto cleanup;
+
+ obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
+ if (IS_ERR(obj)) {
+ err = PTR_ERR(obj);
+ goto cleanup;
+ }
+
+ vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0);
+ if (IS_ERR(vma) && PTR_ERR(vma) != -ENOSPC) {
+ pr_err("Failed to evict+insert, i915_gem_object_ggtt_pin returned err=%d\n", (int)PTR_ERR(vma));
+ err = PTR_ERR(vma);
+ goto cleanup;
+ }
+
+cleanup:
+ cleanup_objects(i915);
+ return err;
+}
+
+static int igt_evict_for_vma(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct i915_ggtt *ggtt = &i915->ggtt;
+ struct i915_vma target = {
+ .node = {
+ .start = 0,
+ .size = 4096,
+ },
+ .vm = &ggtt->base,
+ };
+ int err;
+
+ err = populate_ggtt(i915);
+ if (err)
+ goto cleanup;
+
+ err = i915_gem_evict_for_vma(&target, 0);
+ if (err != -ENOSPC) {
+ pr_err("i915_gem_evict_for_vma on a full GGTT returned err=%d\n",
+ err);
+ goto cleanup;
+ }
+
+ unpin_ggtt(i915);
+
+ err = i915_gem_evict_for_vma(&target, 0);
+ if (err) {
+ pr_err("i915_gem_evict_for_vma returned err=%d\n",
+ err);
+ goto cleanup;
+ }
+
+cleanup:
+ cleanup_objects(i915);
+ return err;
+}
+
+static int igt_evict_vm(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct i915_ggtt *ggtt = &i915->ggtt;
+ int err;
+
+ err = populate_ggtt(i915);
+ if (err)
+ goto cleanup;
+
+ err = i915_gem_evict_vm(&ggtt->base, false);
+ if (err) {
+ pr_err("i915_gem_evict_vm on a full GGTT returned err=%d]\n",
+ err);
+ goto cleanup;
+ }
+
+cleanup:
+ cleanup_objects(i915);
+ return err;
+}
+
+int i915_gem_evict_selftest(void)
+{
+ static const struct i915_subtest tests[] = {
+ SUBTEST(igt_evict_something),
+ SUBTEST(igt_evict_for_vma),
+ SUBTEST(igt_evict_vm),
+ SUBTEST(igt_overcommit),
+ };
+ struct drm_i915_private *i915;
+ int err;
+
+ i915 = mock_gem_device();
+ if (!i915)
+ return -ENOMEM;
+
+ mutex_lock(&i915->drm.struct_mutex);
+ err = i915_subtests(tests, i915);
+ mutex_unlock(&i915->drm.struct_mutex);
+
+ drm_dev_unref(&i915->drm);
+ return err;
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
index 417bcfa3cdba..f71f42a70a86 100644
--- a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
+++ b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
@@ -15,3 +15,4 @@ selftest(breadcrumbs, intel_breadcrumbs_selftest)
selftest(requests, i915_gem_request_selftest)
selftest(objects, i915_gem_object_selftests)
selftest(dmabuf, i915_gem_dmabuf_selftest)
+selftest(evict, i915_gem_evict_selftest)
--
2.11.0
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