kernel/linux.git/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c, branch v7.0-rc7

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

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

drm/amdkfd: Adjust parameter of allocate_mqd

2026-01-29T17:26:58+00:00

Make allocate_mqd consistent with other callbacks. Prepare for next patch to use mqd_manager->mqd_size. Signed-off-by: Lang Yu Reviewed-by: David Belanger Reviewed-by: Hawking Zhang Reviewed-by: Mukul Joshi Signed-off-by: Alex Deucher

drm/amdkfd: update outdated comment

2026-01-05T22:00:00+00:00

The function acquire_packet_buffer() was renamed kq_acquire_packet_buffer() by commit a5a4d68c9326 ("drm/amdkfd: Eliminate unnecessary kernel queue function pointers"). Update the comment accordingly. Signed-off-by: Julia Lawall Signed-off-by: Felix Kuehling Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

amdkfd: remove test_kq

2025-12-08T18:56:42+00:00

This commit removes test_kq() function becuse it has been marked as unused since 2014 and no other functions calls it. Signed-off-by: Zhu Lingshan Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

amdkfd: process pointer of a HIQ should be NULL

2025-12-08T18:56:42+00:00

In kq_initialize, queue->process of a HIQ should be NULL as initialized, because it does not belong to any kfd_process. This commit decommisions the function kfd_get_process() because it can not locate a specific kfd_process among multiple contexts and not any code path calls it after this commit. Signed-off-by: Zhu Lingshan Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

amdkfd: remove DIQ support

2025-12-08T18:56:42+00:00

This commit remove DIQ support because it has been marked as DEPRECATED since 2022 Signed-off-by: Zhu Lingshan Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdkfd: Allow device error to be logged

2025-08-27T17:57:48+00:00

The addition of a WARN_ON() check in order to return early in the kq_initialize function retroactively causes the default case in the following switch statement to never be executed, preventing dev_err from logging device errors in the kernel. Both logs are now checked in the default case. Signed-off-by: Sunday Clement Reviewed-by: Harish Kasiviswanathan Signed-off-by: Alex Deucher

drm/amdkfd: Use the correct wptr size

2024-11-21T20:55:20+00:00

Write pointer could be 32-bit or 64-bit. Use the correct size during initialization. Signed-off-by: Lijo Lazar Acked-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

drm/amdkfd: make sure ring buffer is flushed before update wptr

2024-11-20T15:03:05+00:00

In a consecutive packet submission, for example unmap and query status, when CP is reading wptr caused by unmap packet doorbell ring, if in some case CP operates slower (e.g. doorbell_mode=1) and wptr has been updated to next packet (query status), but the query status packet content has not been flushed to memory yet, it will cause CP fetched stalled data. Adding mb to ensure ring buffer has been updated before updating wptr. Also adding a mb to ensure wptr updated before doorbell ring. Signed-off-by: Victor Zhao Reviewed-by: Christian König Signed-off-by: Alex Deucher