kernel/linux.git/drivers/gpu/drm/tests/drm_buddy_test.c, branch v6.3.2

drm: test: Fix 32-bit issue in drm_buddy_test

2023-03-29T15:14:15+00:00

The drm_buddy_test KUnit tests verify that returned blocks have sizes which are powers of two using is_power_of_2(). However, is_power_of_2() operations on a 'long', but the block size is a u64. So on systems where long is 32-bit, this can sometimes fail even on correctly sized blocks. This only reproduces randomly, as the parameters passed to the buddy allocator in this test are random. The seed 0xb2e06022 reproduced it fine here. For now, just hardcode an is_power_of_2() implementation using x & (x - 1). Signed-off-by: David Gow Acked-by: Christian König Reviewed-by: Maíra Canal Reviewed-by: Arunpravin Paneer Selvam Link: https://patchwork.freedesktop.org/patch/msgid/20230329065532.2122295-2-davidgow@google.com Signed-off-by: Christian König

drm/tests: Add back seed value information

2022-11-02T12:22:47+00:00

As reported by Michał, the drm_mm and drm_buddy unit tests lost the printk with seed value after they were refactored into KUnit. Add kunit_info with seed value information to assure reproducibility. Reported-by: Michał Winiarski Signed-off-by: Arthur Grillo Signed-off-by: Maíra Canal Link: https://patchwork.freedesktop.org/patch/msgid/20221028221755.340487-1-arthurgrillo@riseup.net

treewide: use get_random_u32() when possible

2022-10-11T23:42:58+00:00

The prandom_u32() function has been a deprecated inline wrapper around get_random_u32() for several releases now, and compiles down to the exact same code. Replace the deprecated wrapper with a direct call to the real function. The same also applies to get_random_int(), which is just a wrapper around get_random_u32(). This was done as a basic find and replace. Reviewed-by: Greg Kroah-Hartman Reviewed-by: Kees Cook Reviewed-by: Yury Norov Reviewed-by: Jan Kara # for ext4 Acked-by: Toke Høiland-Jørgensen # for sch_cake Acked-by: Chuck Lever # for nfsd Acked-by: Jakub Kicinski Acked-by: Mika Westerberg # for thunderbolt Acked-by: Darrick J. Wong # for xfs Acked-by: Helge Deller # for parisc Acked-by: Heiko Carstens # for s390 Signed-off-by: Jason A. Donenfeld

drm/tests: Change "igt_" prefix to "drm_test_"

2022-09-14T16:53:33+00:00

With the introduction of KUnit, IGT is no longer the only option to run the DRM unit tests, as the tests can be run through kunit-tool or on real hardware with CONFIG_KUNIT. Therefore, remove the "igt_" prefix from the tests and replace it with the "drm_test_" prefix, making the tests' names independent from the tool used. Signed-off-by: Maíra Canal Acked-by: David Gow Acked-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20220911191756.203118-2-mairacanal@riseup.net

drm: selftest: convert drm_buddy selftest to KUnit

2022-07-11T12:00:03+00:00

Considering the current adoption of the KUnit framework, convert the DRM buddy selftest to the KUnit API. Tested-by: David Gow Acked-by: Daniel Latypov Reviewed-by: Javier Martinez Canillas Signed-off-by: Maíra Canal Signed-off-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20220708203052.236290-9-maira.canal@usp.br