linux-stable.git/drivers/gpu/drm/selftests, branch v5.18.2

drm/selftest: plane_helper: Put test structures in static storage

2022-03-21T10:05:05+00:00

Clang warns on certain 32-bit architectures:

  drivers/gpu/drm/selftests/test-drm_plane_helper.c:76:5: warning: stack frame size (1064) exceeds limit (1024) in 'igt_check_plane_state' [-Wframe-larger-than]
  int igt_check_plane_state(void *ignored)
      ^
  1 warning generated.

The structures in igt_check_plane_state() total 1008 bytes, so any small
amount of inlining will cause the stack frame to exceed the 32-bit limit
of 1024, triggering the warning.

Move these structures to static storage, which dramatically reduces the
amount of stack space in igt_check_plane_state(). There is no testing
impact, as igt_check_plane_state() is only called once in the driver.

Fixes: 943e6a8beeac ("mock a drm_plane in igt_check_plane_state to make the test more robust")
Link: https://github.com/ClangBuiltLinux/linux/issues/1600
Reported-by: kernel test robot 
Suggested-by: Nick Desaulniers 
Signed-off-by: Nathan Chancellor 
Reviewed-by: Nick Desaulniers 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20220302235909.784935-1-nathan@kernel.org

drm/selftests: add drm buddy pathological testcase

2022-02-23T09:46:32+00:00

create a pot-sized mm, then allocate one of each possible
order within. This should leave the mm with exactly one
page left. Free the largest block, then whittle down again.
Eventually we will have a fully 50% fragmented mm.

v2(Matthew Auld):
  - removed unnecessary test succeeded print
  - replace list_del()/list_add_tail() with list_move_tail()

Signed-off-by: Arunpravin 
Reviewed-by: Matthew Auld 
Acked-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20220222174845.2175-7-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König

drm/selftests: add drm buddy smoke testcase

2022-02-23T09:46:06+00:00

- add a test to ascertain that the critical functionalities
  of the program is working fine
- add a timeout helper function

v2:
  - removed unnecessary test succeeded print
  - replace list_del()/list_add_tail() with list_move_tail()

Signed-off-by: Arunpravin 
Reviewed-by: Matthew Auld 
Acked-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20220222174845.2175-6-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König

drm/selftests: add drm buddy pessimistic testcase

2022-02-23T09:45:41+00:00

create a pot-sized mm, then allocate one of each possible
order within. This should leave the mm with exactly one
page left.

v2:
  - removed unnecessary test succeeded print
  - replace list_del()/list_add_tail() with list_move_tail()

Signed-off-by: Arunpravin 
Reviewed-by: Matthew Auld 
Acked-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20220222174845.2175-5-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König

drm/selftests: add drm buddy optimistic testcase

2022-02-23T09:45:11+00:00

create a mm with one block of each order available, and
try to allocate them all.

v2(Matthew Auld):
  - removed unnecessary test succeeded print
  - replace list_del()/list_add_tail() with list_move_tail()

Signed-off-by: Arunpravin 
Reviewed-by: Matthew Auld 
Acked-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20220222174845.2175-4-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König

drm/selftests: add drm buddy alloc range testcase

2022-02-23T09:44:43+00:00

- add a test to check the range allocation
- export get_buddy() function in drm_buddy.c
- export drm_prandom_u32_max_state() in lib/drm_random.c
- include helper functions
- include prime number header file

v2:
  - add drm_get_buddy() function description (Matthew Auld)
  - removed unnecessary test succeeded print

Signed-off-by: Arunpravin 
Reviewed-by: Matthew Auld 
Acked-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20220222174845.2175-3-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König

drm/selftests: add drm buddy alloc limit testcase

2022-02-23T09:44:02+00:00

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 
Reviewed-by: Matthew Auld 
Acked-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20220222174845.2175-2-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König

drm/selftests: Move i915 buddy selftests into drm

2022-02-23T09:43:25+00:00

- move i915 buddy selftests into drm selftests folder
- add Makefile and Kconfig support
- add sanitycheck testcase

Prerequisites
- These series of selftests patches are created on top of
  drm buddy series
- Enable kselftests for DRM as a module in .config

Signed-off-by: Arunpravin 
Acked-by: Christian König 
Acked-by: Matthew Auld 
Link: https://patchwork.freedesktop.org/patch/msgid/20220222174845.2175-1-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König

drm: remove allow_fb_modifiers

2022-01-31T20:45:24+00:00

The allow_fb_modifiers flag is unnecessary since it has been replaced
with fb_modifiers_not_supported flag.

v3:
 - change the order as follows:
   1. add fb_modifiers_not_supported flag
   2. add default modifiers
   3. remove allow_fb_modifiers flag

v5:
 - keep a sanity check in plane init func

Signed-off-by: Tomohito Esaki 
Reviewed-by: Andy Shevchenko 
Reviewed-by: Laurent Pinchart 
Signed-off-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20220128060836.11216-4-etom@igel.co.jp

drm/selftests/test-drm_dp_mst_helper: Fix memory leak in sideband_msg_req_encode_decode

2022-01-19T15:14:45+00:00

Avoid leaking the "out" variable if it is not possible to allocate
the "txmsg" variable.

Fixes: 09234b88ef55 ("drm/selftests/test-drm_dp_mst_helper: Move 'sideband_msg_req_encode_decode' onto the heap")
Addresses-Coverity-ID: 1475685 ("Resource leak")
Signed-off-by: José Expósito 
Signed-off-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20220108165812.46797-1-jose.exposito89@gmail.com