KUNIT_ASSERT_FALSE_MSG(test, drm_mm_reserve_node(&mm, &nodes[1]),
"failed to reserve node[0] {start=%lld, size=%lld)\n",
nodes[0].start, nodes[0].size);
+
+ drm_mm_print(&mm, &p);
+ KUNIT_SUCCEED(test);
}
- static struct drm_mm_node *set_node(struct drm_mm_node *node,
- u64 start, u64 size)
- {
- node->start = start;
- node->size = size;
- return node;
- }
-
- static bool expect_reserve_fail(struct kunit *test, struct drm_mm *mm, struct drm_mm_node *node)
- {
- int err;
-
- err = drm_mm_reserve_node(mm, node);
- if (likely(err == -ENOSPC))
- return true;
-
- if (!err) {
- KUNIT_FAIL(test, "impossible reserve succeeded, node %llu + %llu\n",
- node->start, node->size);
- drm_mm_remove_node(node);
- } else {
- KUNIT_FAIL(test,
- "impossible reserve failed with wrong error %d [expected %d], node %llu + %llu\n",
- err, -ENOSPC, node->start, node->size);
- }
- return false;
- }
-
- static bool noinline_for_stack check_reserve_boundaries(struct kunit *test, struct drm_mm *mm,
- unsigned int count,
- u64 size)
- {
- const struct boundary {
- u64 start, size;
- const char *name;
- } boundaries[] = {
- #define B(st, sz) { (st), (sz), "{ " #st ", " #sz "}" }
- B(0, 0),
- B(-size, 0),
- B(size, 0),
- B(size * count, 0),
- B(-size, size),
- B(-size, -size),
- B(-size, 2 * size),
- B(0, -size),
- B(size, -size),
- B(count * size, size),
- B(count * size, -size),
- B(count * size, count * size),
- B(count * size, -count * size),
- B(count * size, -(count + 1) * size),
- B((count + 1) * size, size),
- B((count + 1) * size, -size),
- B((count + 1) * size, -2 * size),
- #undef B
- };
- struct drm_mm_node tmp = {};
- int n;
-
- for (n = 0; n < ARRAY_SIZE(boundaries); n++) {
- if (!expect_reserve_fail(test, mm, set_node(&tmp, boundaries[n].start,
- boundaries[n].size))) {
- KUNIT_FAIL(test, "boundary[%d:%s] failed, count=%u, size=%lld\n",
- n, boundaries[n].name, count, size);
- return false;
- }
- }
-
- return true;
- }
-
- static int __drm_test_mm_reserve(struct kunit *test, unsigned int count, u64 size)
- {
- DRM_RND_STATE(prng, random_seed);
- struct drm_mm mm;
- struct drm_mm_node tmp, *nodes, *node, *next;
- unsigned int *order, n, m, o = 0;
- int ret, err;
-
- /* For exercising drm_mm_reserve_node(), we want to check that
- * reservations outside of the drm_mm range are rejected, and to
- * overlapping and otherwise already occupied ranges. Afterwards,
- * the tree and nodes should be intact.
- */
-
- DRM_MM_BUG_ON(!count);
- DRM_MM_BUG_ON(!size);
-
- ret = -ENOMEM;
- order = drm_random_order(count, &prng);
- if (!order)
- goto err;
-
- nodes = vzalloc(array_size(count, sizeof(*nodes)));
- KUNIT_ASSERT_TRUE(test, nodes);
-
- ret = -EINVAL;
- drm_mm_init(&mm, 0, count * size);
-
- if (!check_reserve_boundaries(test, &mm, count, size))
- goto out;
-
- for (n = 0; n < count; n++) {
- nodes[n].start = order[n] * size;
- nodes[n].size = size;
-
- err = drm_mm_reserve_node(&mm, &nodes[n]);
- if (err) {
- KUNIT_FAIL(test, "reserve failed, step %d, start %llu\n",
- n, nodes[n].start);
- ret = err;
- goto out;
- }
-
- if (!drm_mm_node_allocated(&nodes[n])) {
- KUNIT_FAIL(test, "reserved node not allocated! step %d, start %llu\n",
- n, nodes[n].start);
- goto out;
- }
-
- if (!expect_reserve_fail(test, &mm, &nodes[n]))
- goto out;
- }
-
- /* After random insertion the nodes should be in order */
- if (!assert_continuous(test, &mm, size))
- goto out;
-
- /* Repeated use should then fail */
- drm_random_reorder(order, count, &prng);
- for (n = 0; n < count; n++) {
- if (!expect_reserve_fail(test, &mm, set_node(&tmp, order[n] * size, 1)))
- goto out;
-
- /* Remove and reinsert should work */
- drm_mm_remove_node(&nodes[order[n]]);
- err = drm_mm_reserve_node(&mm, &nodes[order[n]]);
- if (err) {
- KUNIT_FAIL(test, "reserve failed, step %d, start %llu\n",
- n, nodes[n].start);
- ret = err;
- goto out;
- }
- }
-
- if (!assert_continuous(test, &mm, size))
- goto out;
-
- /* Overlapping use should then fail */
- for (n = 0; n < count; n++) {
- if (!expect_reserve_fail(test, &mm, set_node(&tmp, 0, size * count)))
- goto out;
- }
- for (n = 0; n < count; n++) {
- if (!expect_reserve_fail(test, &mm, set_node(&tmp, size * n, size * (count - n))))
- goto out;
- }
-
- /* Remove several, reinsert, check full */
- for_each_prime_number(n, min(max_prime, count)) {
- for (m = 0; m < n; m++) {
- node = &nodes[order[(o + m) % count]];
- drm_mm_remove_node(node);
- }
-
- for (m = 0; m < n; m++) {
- node = &nodes[order[(o + m) % count]];
- err = drm_mm_reserve_node(&mm, node);
- if (err) {
- KUNIT_FAIL(test, "reserve failed, step %d/%d, start %llu\n",
- m, n, node->start);
- ret = err;
- goto out;
- }
- }
-
- o += n;
-
- if (!assert_continuous(test, &mm, size))
- goto out;
- }
-
- ret = 0;
- out:
- drm_mm_for_each_node_safe(node, next, &mm)
- drm_mm_remove_node(node);
- drm_mm_takedown(&mm);
- vfree(nodes);
- kfree(order);
- err:
- return ret;
- }
-
- static void drm_test_mm_reserve(struct kunit *test)
- {
- const unsigned int count = min_t(unsigned int, BIT(10), max_iterations);
- int n;
-
- for_each_prime_number_from(n, 1, 54) {
- u64 size = BIT_ULL(n);
-
- KUNIT_ASSERT_FALSE(test, __drm_test_mm_reserve(test, count, size - 1));
- KUNIT_ASSERT_FALSE(test, __drm_test_mm_reserve(test, count, size));
- KUNIT_ASSERT_FALSE(test, __drm_test_mm_reserve(test, count, size + 1));
-
- cond_resched();
- }
- }
-
static bool expect_insert(struct kunit *test, struct drm_mm *mm,
struct drm_mm_node *node, u64 size, u64 alignment, unsigned long color,
const struct insert_mode *mode)
projects / thirdparty / linux.git / commitdiff
