diff options
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_buddy.c')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_buddy.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_buddy.c b/drivers/gpu/drm/i915/selftests/i915_buddy.c index 632b912b0bc9..f0f5c4df8dbc 100644 --- a/drivers/gpu/drm/i915/selftests/i915_buddy.c +++ b/drivers/gpu/drm/i915/selftests/i915_buddy.c @@ -727,6 +727,53 @@ err_fini: return err; } +static int igt_buddy_alloc_limit(void *arg) +{ + struct i915_buddy_block *block; + struct i915_buddy_mm mm; + const u64 size = U64_MAX; + int err; + + err = i915_buddy_init(&mm, size, PAGE_SIZE); + if (err) + return err; + + if (mm.max_order != I915_BUDDY_MAX_ORDER) { + pr_err("mm.max_order(%d) != %d\n", + mm.max_order, I915_BUDDY_MAX_ORDER); + err = -EINVAL; + goto out_fini; + } + + block = i915_buddy_alloc(&mm, mm.max_order); + if (IS_ERR(block)) { + err = PTR_ERR(block); + goto out_fini; + } + + if (i915_buddy_block_order(block) != mm.max_order) { + pr_err("block order(%d) != %d\n", + i915_buddy_block_order(block), mm.max_order); + err = -EINVAL; + goto out_free; + } + + if (i915_buddy_block_size(&mm, block) != + BIT_ULL(mm.max_order) * PAGE_SIZE) { + pr_err("block size(%llu) != %llu\n", + i915_buddy_block_size(&mm, block), + BIT_ULL(mm.max_order) * PAGE_SIZE); + err = -EINVAL; + goto out_free; + } + +out_free: + i915_buddy_free(&mm, block); +out_fini: + i915_buddy_fini(&mm); + return err; +} + int i915_buddy_mock_selftests(void) { static const struct i915_subtest tests[] = { @@ -735,6 +782,7 @@ int i915_buddy_mock_selftests(void) SUBTEST(igt_buddy_alloc_pathological), SUBTEST(igt_buddy_alloc_smoke), SUBTEST(igt_buddy_alloc_range), + SUBTEST(igt_buddy_alloc_limit), }; return i915_subtests(tests, NULL); |