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 <ch...@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.a...@intel.com>
---
drivers/gpu/drm/i915/i915_gem_evict.c | 4 +
drivers/gpu/drm/i915/selftests/i915_gem_evict.c | 258 +++++++++++++++++++++
.../gpu/drm/i915/selftests/i915_mock_selftests.h | 1 +
3 files changed, 263 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 c181b1bb3d2c..609a8fcb48ca 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -387,3 +387,7 @@ 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..5bf5a1ccfd5b
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -0,0 +1,258 @@
+/*
+ * 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_GTT_PAGE_SIZE <= i915->ggtt.base.total;
+ size += I915_GTT_PAGE_SIZE) {
+ struct i915_vma *vma;
+
+ obj = i915_gem_object_create_internal(i915, I915_GTT_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);
+
+ i915_gem_drain_freed_objects(i915);
+
+ 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;
+
+ /* Fill the GGTT with pinned objects and try to evict one. */
+
+ err = populate_ggtt(i915);
+ if (err)
+ goto cleanup;
+
+ /* Everything is pinned, nothing should happen */
+ err = i915_gem_evict_something(&ggtt->base,
+ I915_GTT_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);
+
+ /* Everything is unpinned, we should be able to evict something */
+ err = i915_gem_evict_something(&ggtt->base,
+ I915_GTT_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;
+
+ /* Fill the GGTT with pinned objects and then try to pin one more.
+ * We expect it to fail.
+ */
+
+ err = populate_ggtt(i915);
+ if (err)
+ goto cleanup;
+
+ obj = i915_gem_object_create_internal(i915, I915_GTT_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 drm_mm_node target = {
+ .start = 0,
+ .size = 4096,
+ };
+ int err;
+
+ /* Fill the GGTT with pinned objects and try to evict a range. */
+
+ err = populate_ggtt(i915);
+ if (err)
+ goto cleanup;
+
+ /* Everything is pinned, nothing should happen */
+ err = i915_gem_evict_for_node(&ggtt->base, &target, 0);
+ if (err != -ENOSPC) {
+ pr_err("i915_gem_evict_for_node on a full GGTT returned
err=%d\n",
+ err);
+ goto cleanup;
+ }
+
+ unpin_ggtt(i915);
+
+ /* Everything is unpinned, we should be able to evict the node */
+ err = i915_gem_evict_for_node(&ggtt->base, &target, 0);
+ if (err) {
+ pr_err("i915_gem_evict_for_node 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;
+
+ /* Fill the GGTT with pinned objects and try to evict everything. */
+
+ err = populate_ggtt(i915);
+ if (err)
+ goto cleanup;
+
+ /* Everything is pinned, nothing should happen */
+ 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;
+ }
+
+ unpin_ggtt(i915);
+
+ 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_mock_selftests(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 b450eab7e6e1..cfbd3f5486ae 100644
--- a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
+++ b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
@@ -16,3 +16,4 @@ selftest(requests, i915_gem_request_mock_selftests)
selftest(objects, i915_gem_object_mock_selftests)
selftest(dmabuf, i915_gem_dmabuf_mock_selftests)
selftest(vma, i915_vma_mock_selftests)
+selftest(evict, i915_gem_evict_mock_selftests)
--
2.11.0
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