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authorMaxime Ripard <maxime@cerno.tech>2021-05-11 13:35:52 +0200
committerMaxime Ripard <maxime@cerno.tech>2021-05-11 13:35:52 +0200
commitc55b44c9386f3ee1b08752638559f19deaf6040d (patch)
treec843a21f45180387fcd9eb2625cc9d1f166a3156 /drivers/gpu/drm/i915/selftests/i915_buddy.c
parentMAINTAINERS: Update my e-mail (diff)
parentLinux 5.13-rc1 (diff)
downloadlinux-c55b44c9386f3ee1b08752638559f19deaf6040d.tar.xz
linux-c55b44c9386f3ee1b08752638559f19deaf6040d.zip
Merge drm/drm-fixes into drm-misc-fixes
Start this new release drm-misc-fixes branch Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_buddy.c')
-rw-r--r--drivers/gpu/drm/i915/selftests/i915_buddy.c48
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);