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| author | Arunpravin <Arunpravin.PaneerSelvam@amd.com> | 2022-02-22 23:18:40 +0530 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2022-02-23 10:44:02 +0100 |
| commit | cb8f00f27ae7a1e8d047f1e2c96acc257f09d51b (patch) | |
| tree | 29f4d53909c2e8f1c4a2b7c3b0ddc8fedb35d187 /drivers/gpu/drm/selftests | |
| parent | 3d515ba9ead046a0c06a461697a8d5211298aadc (diff) | |
| download | linux-cb8f00f27ae7a1e8d047f1e2c96acc257f09d51b.tar.gz linux-cb8f00f27ae7a1e8d047f1e2c96acc257f09d51b.tar.bz2 linux-cb8f00f27ae7a1e8d047f1e2c96acc257f09d51b.zip | |
drm/selftests: add drm buddy alloc limit testcase
add a test to check the maximum allocation limit
v2(Matthew Auld):
- added err = -EINVAL in block NULL check
- removed unnecessary test succeeded print
Signed-off-by: Arunpravin <Arunpravin.PaneerSelvam@amd.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220222174845.2175-2-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
Diffstat (limited to 'drivers/gpu/drm/selftests')
| -rw-r--r-- | drivers/gpu/drm/selftests/drm_buddy_selftests.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/selftests/test-drm_buddy.c | 59 |
2 files changed, 60 insertions, 0 deletions
diff --git a/drivers/gpu/drm/selftests/drm_buddy_selftests.h b/drivers/gpu/drm/selftests/drm_buddy_selftests.h index a4bcf3a6dfe3..ebe16162762f 100644 --- a/drivers/gpu/drm/selftests/drm_buddy_selftests.h +++ b/drivers/gpu/drm/selftests/drm_buddy_selftests.h @@ -7,3 +7,4 @@ * Tests are executed in order by igt/drm_buddy */ selftest(sanitycheck, igt_sanitycheck) /* keep first (selfcheck for igt) */ +selftest(buddy_alloc_limit, igt_buddy_alloc_limit) diff --git a/drivers/gpu/drm/selftests/test-drm_buddy.c b/drivers/gpu/drm/selftests/test-drm_buddy.c index 51e4d393d22c..0df41e1cb8a6 100644 --- a/drivers/gpu/drm/selftests/test-drm_buddy.c +++ b/drivers/gpu/drm/selftests/test-drm_buddy.c @@ -16,6 +16,65 @@ static unsigned int random_seed; +static int igt_buddy_alloc_limit(void *arg) +{ + u64 end, size = U64_MAX, start = 0; + struct drm_buddy_block *block; + unsigned long flags = 0; + LIST_HEAD(allocated); + struct drm_buddy mm; + int err; + + size = end = round_down(size, 4096); + err = drm_buddy_init(&mm, size, PAGE_SIZE); + if (err) + return err; + + if (mm.max_order != DRM_BUDDY_MAX_ORDER) { + pr_err("mm.max_order(%d) != %d\n", + mm.max_order, DRM_BUDDY_MAX_ORDER); + err = -EINVAL; + goto out_fini; + } + + err = drm_buddy_alloc_blocks(&mm, start, end, size, + PAGE_SIZE, &allocated, flags); + + if (unlikely(err)) + goto out_free; + + block = list_first_entry_or_null(&allocated, + struct drm_buddy_block, + link); + + if (!block) { + err = -EINVAL; + goto out_fini; + } + + if (drm_buddy_block_order(block) != mm.max_order) { + pr_err("block order(%d) != %d\n", + drm_buddy_block_order(block), mm.max_order); + err = -EINVAL; + goto out_free; + } + + if (drm_buddy_block_size(&mm, block) != + BIT_ULL(mm.max_order) * PAGE_SIZE) { + pr_err("block size(%llu) != %llu\n", + drm_buddy_block_size(&mm, block), + BIT_ULL(mm.max_order) * PAGE_SIZE); + err = -EINVAL; + goto out_free; + } + +out_free: + drm_buddy_free_list(&mm, &allocated); +out_fini: + drm_buddy_fini(&mm); + return err; +} + static int igt_sanitycheck(void *ignored) { pr_info("%s - ok!\n", __func__); |