Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/ttm/tests: Add tests for ttm_tt_populate
Add tests for functions that add and release pages to TTs. Test the
swapin operation. Export ttm_tt_unpopulate, ttm_tt_swapin and
ttm_tt_swapout symbols for testing purposes.
Signed-off-by: Karolina Stolarek <karolina.stolarek@intel.com>
Reviewed-by: Somalapuram, Amaranath <asomalap@amd.com>
Tested-by: Somalapuram, Amaranath <asomalap@amd.com>
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ee42d83a472ba6bca22b4bce58f332f800891186.1718192625.git.karolina.stolarek@intel.com
authored by
Karolina Stolarek
and committed by
Arunpravin Paneer Selvam
d6a82a15
5fe39433
+122
+119
drivers/gpu/drm/ttm/tests/ttm_tt_test.c
+119
drivers/gpu/drm/ttm/tests/ttm_tt_test.c
···
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ttm_tt_destroy(devs->ttm_dev, bo->ttm);
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}
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static void ttm_tt_populate_null_ttm(struct kunit *test)
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{
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const struct ttm_test_devices *devs = test->priv;
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struct ttm_operation_ctx ctx = { };
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int err;
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err = ttm_tt_populate(devs->ttm_dev, NULL, &ctx);
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KUNIT_ASSERT_EQ(test, err, -EINVAL);
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}
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static void ttm_tt_populate_populated_ttm(struct kunit *test)
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{
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const struct ttm_test_devices *devs = test->priv;
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struct ttm_operation_ctx ctx = { };
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struct ttm_buffer_object *bo;
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struct ttm_tt *tt;
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struct page *populated_page;
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int err;
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bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
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tt = kunit_kzalloc(test, sizeof(*tt), GFP_KERNEL);
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KUNIT_ASSERT_NOT_NULL(test, tt);
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err = ttm_tt_init(tt, bo, 0, ttm_cached, 0);
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KUNIT_ASSERT_EQ(test, err, 0);
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err = ttm_tt_populate(devs->ttm_dev, tt, &ctx);
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KUNIT_ASSERT_EQ(test, err, 0);
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populated_page = *tt->pages;
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err = ttm_tt_populate(devs->ttm_dev, tt, &ctx);
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KUNIT_ASSERT_PTR_EQ(test, populated_page, *tt->pages);
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}
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static void ttm_tt_unpopulate_basic(struct kunit *test)
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{
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const struct ttm_test_devices *devs = test->priv;
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struct ttm_operation_ctx ctx = { };
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struct ttm_buffer_object *bo;
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struct ttm_tt *tt;
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int err;
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bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
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tt = kunit_kzalloc(test, sizeof(*tt), GFP_KERNEL);
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KUNIT_ASSERT_NOT_NULL(test, tt);
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err = ttm_tt_init(tt, bo, 0, ttm_cached, 0);
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KUNIT_ASSERT_EQ(test, err, 0);
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err = ttm_tt_populate(devs->ttm_dev, tt, &ctx);
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KUNIT_ASSERT_EQ(test, err, 0);
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KUNIT_ASSERT_TRUE(test, ttm_tt_is_populated(tt));
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ttm_tt_unpopulate(devs->ttm_dev, tt);
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KUNIT_ASSERT_FALSE(test, ttm_tt_is_populated(tt));
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}
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static void ttm_tt_unpopulate_empty_ttm(struct kunit *test)
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{
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const struct ttm_test_devices *devs = test->priv;
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struct ttm_buffer_object *bo;
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struct ttm_tt *tt;
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int err;
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bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
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tt = kunit_kzalloc(test, sizeof(*tt), GFP_KERNEL);
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KUNIT_ASSERT_NOT_NULL(test, tt);
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err = ttm_tt_init(tt, bo, 0, ttm_cached, 0);
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KUNIT_ASSERT_EQ(test, err, 0);
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ttm_tt_unpopulate(devs->ttm_dev, tt);
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/* Expect graceful handling of unpopulated TTs */
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}
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static void ttm_tt_swapin_basic(struct kunit *test)
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{
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const struct ttm_test_devices *devs = test->priv;
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int expected_num_pages = BO_SIZE >> PAGE_SHIFT;
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struct ttm_operation_ctx ctx = { };
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struct ttm_buffer_object *bo;
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struct ttm_tt *tt;
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int err, num_pages;
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bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
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tt = kunit_kzalloc(test, sizeof(*tt), GFP_KERNEL);
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KUNIT_ASSERT_NOT_NULL(test, tt);
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err = ttm_tt_init(tt, bo, 0, ttm_cached, 0);
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KUNIT_ASSERT_EQ(test, err, 0);
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err = ttm_tt_populate(devs->ttm_dev, tt, &ctx);
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KUNIT_ASSERT_EQ(test, err, 0);
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KUNIT_ASSERT_TRUE(test, ttm_tt_is_populated(tt));
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num_pages = ttm_tt_swapout(devs->ttm_dev, tt, GFP_KERNEL);
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KUNIT_ASSERT_EQ(test, num_pages, expected_num_pages);
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KUNIT_ASSERT_NOT_NULL(test, tt->swap_storage);
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KUNIT_ASSERT_TRUE(test, tt->page_flags & TTM_TT_FLAG_SWAPPED);
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/* Swapout depopulates TT, allocate pages and then swap them in */
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err = ttm_pool_alloc(&devs->ttm_dev->pool, tt, &ctx);
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KUNIT_ASSERT_EQ(test, err, 0);
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err = ttm_tt_swapin(tt);
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KUNIT_ASSERT_EQ(test, err, 0);
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KUNIT_ASSERT_NULL(test, tt->swap_storage);
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KUNIT_ASSERT_FALSE(test, tt->page_flags & TTM_TT_FLAG_SWAPPED);
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}
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static struct kunit_case ttm_tt_test_cases[] = {
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KUNIT_CASE_PARAM(ttm_tt_init_basic, ttm_tt_init_basic_gen_params),
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KUNIT_CASE(ttm_tt_init_misaligned),
···
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KUNIT_CASE(ttm_tt_create_ttm_exists),
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KUNIT_CASE(ttm_tt_create_failed),
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KUNIT_CASE(ttm_tt_destroy_basic),
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KUNIT_CASE(ttm_tt_populate_null_ttm),
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KUNIT_CASE(ttm_tt_populate_populated_ttm),
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KUNIT_CASE(ttm_tt_unpopulate_basic),
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KUNIT_CASE(ttm_tt_unpopulate_empty_ttm),
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KUNIT_CASE(ttm_tt_swapin_basic),
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{}
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};
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+3
drivers/gpu/drm/ttm/ttm_tt.c
+3
drivers/gpu/drm/ttm/ttm_tt.c
···
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out_err:
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return ret;
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}
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EXPORT_SYMBOL_FOR_TESTS_ONLY(ttm_tt_swapin);
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/**
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* ttm_tt_swapout - swap out tt object
···
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return ret;
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}
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EXPORT_SYMBOL_FOR_TESTS_ONLY(ttm_tt_swapout);
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int ttm_tt_populate(struct ttm_device *bdev,
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struct ttm_tt *ttm, struct ttm_operation_ctx *ctx)
···
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ttm->page_flags &= ~TTM_TT_FLAG_PRIV_POPULATED;
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}
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EXPORT_SYMBOL_FOR_TESTS_ONLY(ttm_tt_unpopulate);
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#ifdef CONFIG_DEBUG_FS
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