linux-toradex.git/drivers/gpu/drm/selftests, branch v6.0-rc4

drm/display/selftests: drop extra word 'for' in comments for MST selftests

2022-06-28T22:53:20+00:00

there is an unexpected word 'for' in the comments that need to be dropped

file - ./drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c
line - 3

* Test cases for for the DRM DP MST helpers

changed to:

* Test cases for the DRM DP MST helpers

Signed-off-by: Jiang Jian 
Reviewed-by: Lyude Paul 
Signed-off-by: Lyude Paul 
Link: https://patchwork.freedesktop.org/patch/msgid/20220623100632.27056-1-jiangjian@cdjrlc.com

drm: Drop drm_framebuffer.h from drm_crtc.h

2022-06-20T20:53:55+00:00

drm_crtc.h has no need for drm_frambuffer.h, so don't include it.
Avoids useless rebuilds of the entire universe when
touching drm_framebuffer.h.

Quite a few placs do currently depend on drm_framebuffer.h without
actually including it directly. All of those need to be fixed
up.

v2: Fix up msm some more
v2: Deal with ingenic and shmobile as well

Signed-off-by: Ville Syrjälä 
Link: https://patchwork.freedesktop.org/patch/msgid/20220614095449.29311-1-ville.syrjala@linux.intel.com
Acked-by: Sam Ravnborg 
Acked-by: Jani Nikula

drm: Rename dp/ to display/

2022-04-25T09:17:45+00:00

Rename dp/ to display/ to account for additional display-related
helpers, such as HDMI. Update all related include statements. No
functional changes.

Various drivers, such as i915 and amdgpu, use similar naming scheme
by putting code for video-output standards into a local display/
directory. The new directory's name is aligned with this convention.

v2:
	* update commit message (Javier)

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Lyude Paul 
Reviewed-by: Javier Martinez Canillas 
Reviewed-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20220421073108.19226-3-tzimmermann@suse.de

Merge drm/drm-next into drm-misc-next

2022-04-05T09:06:58+00:00

Let's start the 5.19 development cycle.

Signed-off-by: Maxime Ripard

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: missing error code in igt_buddy_alloc_smoke()

2022-03-07T16:07:54+00:00

Set the error code to -ENOMEM if drm_random_order() fails.

Fixes: e6ff5ef81170 ("drm/selftests: add drm buddy smoke testcase")
Signed-off-by: Dan Carpenter 
Reviewed-by: Arunpravin 
Signed-off-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20220307125458.GA16710@kili

drm/selftests: fix a shift-out-of-bounds bug

2022-03-04T12:07:43+00:00

pass the correct size value computed using the max_order.



[ 68.124177][ T1] UBSAN: shift-out-of-bounds in include/linux/log2.h:67:13
[ 68.125333][ T1] shift exponent 4294967295 is too large for 32-bit type 'long
unsigned int'
[ 68.126563][ T1] CPU: 0 PID: 1 Comm: swapper Not tainted
5.17.0-rc2-00311-g39ec47bbfd5d #2
[ 68.127758][ T1] Call Trace:
[ 68.128187][ T1] dump_stack_lvl (lib/dump_stack.c:108)
[ 68.128793][ T1] dump_stack (lib/dump_stack.c:114)
[ 68.129331][ T1] ubsan_epilogue (lib/ubsan.c:152)
[ 68.129958][ T1] __ubsan_handle_shift_out_of_bounds.cold (arch/x86/include/asm/smap.h:85)

[ 68.130791][ T1] ? drm_block_alloc+0x28/0x80
[ 68.131582][ T1] ? rcu_read_lock_sched_held (kernel/rcu/update.c:125)
[ 68.132215][ T1] ? kmem_cache_alloc (include/trace/events/kmem.h:54 mm/slab.c:3501)
[ 68.132878][ T1] ? mark_free+0x2e/0x80
[ 68.133524][ T1] drm_buddy_init.cold (include/linux/log2.h:67
drivers/gpu/drm/drm_buddy.c:131)
[ 68.134145][ T1] ? test_drm_cmdline_init (drivers/gpu/drm/selftests/test-drm_buddy.c:87)

[ 68.134770][ T1] igt_buddy_alloc_limit (drivers/gpu/drm/selftests/test-drm_buddy.c:30)
[ 68.135472][ T1] ? vprintk_default (kernel/printk/printk.c:2257)
[ 68.136057][ T1] ? test_drm_cmdline_init (drivers/gpu/drm/selftests/test-drm_buddy.c:87)

[ 68.136812][ T1] test_drm_buddy_init (drivers/gpu/drm/selftests/drm_selftest.c:77
drivers/gpu/drm/selftests/test-drm_buddy.c:95)
[ 68.137475][ T1] do_one_initcall (init/main.c:1300)
[ 68.138111][ T1] ? parse_args (kernel/params.c:609 kernel/params.c:146
kernel/params.c:188)
[ 68.138717][ T1] do_basic_setup (init/main.c:1372 init/main.c:1389 init/main.c:1408)
[ 68.139366][ T1] kernel_init_freeable (init/main.c:1617)
[ 68.140040][ T1] ? rest_init (init/main.c:1494)
[ 68.140634][ T1] kernel_init (init/main.c:1504)
[ 68.141155][ T1] ret_from_fork (arch/x86/entry/entry_32.S:772)
[ 68.141607][ T1]
================================================================================
[ 68.146730][ T1] ------------[ cut here ]------------
[ 68.147460][ T1] kernel BUG at drivers/gpu/drm/drm_buddy.c:140!
[ 68.148280][ T1] invalid opcode: 0000 [#1]
[ 68.148895][ T1] CPU: 0 PID: 1 Comm: swapper Not tainted
5.17.0-rc2-00311-g39ec47bbfd5d #2
[ 68.149896][ T1] EIP: drm_buddy_init (drivers/gpu/drm/drm_buddy.c:140 (discriminator 1))

For more details: https://lists.01.org/hyperkitty/list/lkp@lists.01.org/thread/FDIF3HCILZNN5UQAZMOR7E3MQSMHHKWU/

Signed-off-by: Arunpravin 
Reported-by: kernel test robot 
Acked-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20220303201602.2365-1-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König

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