linux-next.git/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v12.c, branch masterLinux kernel latest sourcehttp://mirrors.hust.edu.cn/git/linux-next.git/atom?h=master2026-08-25T22:17:29+00:00drm/kfd: Add CU occupancy support to GFX122026-08-25T22:17:29+00:00David Belangerdavid.belanger@amd.com2026-08-14T17:25:56+00:00urn:sha1:fb1e65a80dd9167e8dfdfdfef178d1d012d8bb58
Port changes from GFX9 to GFX12 mostly as-is.
Minor changes to register access code.
Assisted-by: Claude:Sonnet-4-6
Signed-off-by: David Belanger <david.belanger@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Sreekant Somasekharan <Sreekant.Somasekharan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu/gfx12: WARN() rather than BUG() for invalid SDMA engine2026-07-08T18:25:08+00:00Alex Deucheralexander.deucher@amd.com2026-06-15T22:56:14+00:00urn:sha1:28cc342e2455c2c8f573bb0f0d8427a8199c1515
There's no need to crash the kernel for these cases.
Reviewed-by: Kent Russell <kent.russell@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument2026-02-22T01:09:51+00:00Linus Torvaldstorvalds@linux-foundation.org2026-02-22T00:37:42+00:00urn:sha1:bf4afc53b77aeaa48b5409da5c8da6bb4eff7f43
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
treewide: Replace kmalloc with kmalloc_obj for non-scalar types2026-02-21T09:02:28+00:00Kees Cookkees@kernel.org2026-02-21T07:49:23+00:00urn:sha1:69050f8d6d075dc01af7a5f2f550a8067510366f
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:
Single allocations: kmalloc(sizeof(TYPE), ...)
are replaced with: kmalloc_obj(TYPE, ...)
Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with: kmalloc_objs(TYPE, COUNT, ...)
Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...)
(where TYPE may also be *VAR)
The resulting allocations no longer return "void *", instead returning
"TYPE *".
Signed-off-by: Kees Cook <kees@kernel.org>
drm/amdgpu: Use kmalloc_array() instead of kmalloc()2025-09-23T14:35:54+00:00Rahul Kumarrk0006818@gmail.com2025-09-18T07:12:00+00:00urn:sha1:86a54e45fd91953e2b0e1aa15932112f135e4821
Documentation/process/deprecated.rst recommends against the use of
kmalloc with dynamic size calculations due to the risk of overflow and
smaller allocation being made than the caller was expecting.
Replace kmalloc() with kmalloc_array() in amdgpu_amdkfd_gfx_v10.c,
amdgpu_amdkfd_gfx_v10_3.c, amdgpu_amdkfd_gfx_v11.c and
amdgpu_amdkfd_gfx_v12.c to make the intended allocation size clearer
and avoid potential overflow issues.
Suggested-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Rahul Kumar <rk0006818@gmail.com>
Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: implement per queue sdma reset for gfx 9.4+2025-03-05T15:47:26+00:00Jonathan Kimjonathan.kim@amd.com2025-01-15T20:29:34+00:00urn:sha1:bac38ca8c4755452fcd7e9f2603dea944bcfe76e
To reset hung SDMA queues on GFX 9.4+ for the GFX9 family, a soft reset
must be issued through SMU. Since soft resets will reset an entire SDMA
engine, use a common KGD call to do the reset as the KGD will handle
avoiding a reset of in flight GFX and paging queues on that engine.
In addition, create a common call for all reset types to simplify
the handling of module parameter settings that block gpu resets.
Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Harish Kasiviswanathan <harish.kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: fix support for trap on wave start and end for gfx122024-05-02T20:18:13+00:00Jonathan KimJonathan.Kim@amd.com2023-10-25T13:04:49+00:00urn:sha1:984b265ff604aa608aefc571a2db173b38fe88ce
Similar to GFX11, GFX12 supports trapping on wave start and end.
Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: always enable ttmp setup for gfx122024-05-02T20:18:13+00:00Jonathan Kimjonathan.kim@amd.com2023-10-25T13:04:48+00:00urn:sha1:fda3f378c4c4607b942f2e3c1a18c1156174b440
Similar to GFX11, always enable the setup of trap temporaries on GFX12.
Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: Added gfx_v12_kfd2kgd interface for GFX12.2024-05-02T20:18:12+00:00David Belangerdavid.belanger@amd.com2023-05-29T17:23:08+00:00urn:sha1:90e4fc8369e9ae10f5cf5bbd2e5f26e9359a50b7
Initial implementation, based on GFX11.
v2: Removed functions not needed by cp scheduler.
v3: Fixed typos.
v4: squash in warning fix (Alex)
Signed-off-by: David Belanger <david.belanger@amd.com>
Acked-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>