linux-stable.git/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c, branch linux-5.10.y Linux kernel stable tree drm/amdkfd: Fix pqm_destroy_queue race with GPU reset 2025-05-02T05:40:50+00:00 Philip Yang Philip.Yang@amd.com 2025-02-20T21:02:13+00:00 8fd8bae4cb99352d2d8ae29a9eb0551fb77b2b43 [ Upstream commit 7919b4cad5545ed93778f11881ceee72e4dbed66 ] If GPU in reset, destroy_queue return -EIO, pqm_destroy_queue should delete the queue from process_queue_list and free the resource. Signed-off-by: Philip Yang <Philip.Yang@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 7919b4cad5545ed93778f11881ceee72e4dbed66 ]

If GPU in reset, destroy_queue return -EIO, pqm_destroy_queue should
delete the queue from process_queue_list and free the resource.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/amdkfd: fix sysfs kobj leak 2021-07-20T14:05:49+00:00 Philip Yang Philip.Yang@amd.com 2021-06-21T22:51:26+00:00 b3205768cd1a3a9869500ec27e129f8a71d2152a [ Upstream commit dcdb4d904b4bd3078fe8d4d24b1658560d6078ef ] 3 cases of kobj leak, which causes memory leak: kobj_type must have release() method to free memory from release callback. Don't need NULL default_attrs to init kobj. sysfs files created under kobj_status should be removed with kobj_status as parent kobject. Remove queue sysfs files when releasing queue from process MMU notifier release callback. Signed-off-by: Philip Yang <Philip.Yang@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit dcdb4d904b4bd3078fe8d4d24b1658560d6078ef ]

3 cases of kobj leak, which causes memory leak:

kobj_type must have release() method to free memory from release
callback. Don't need NULL default_attrs to init kobj.

sysfs files created under kobj_status should be removed with kobj_status
as parent kobject.

Remove queue sysfs files when releasing queue from process MMU notifier
release callback.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/amdkfd: New IOCTL to allocate queue GWS (v2) 2020-04-28T20:20:30+00:00 Oak Zeng Oak.Zeng@amd.com 2019-05-07T03:11:14+00:00 5bb4b78be9c67b02a7f138850e9e89825181f555 Add a new kfd ioctl to allocate queue GWS. Queue GWS is released on queue destroy. v2: re-introduce this API with the following fixes squashed in: - drm/amdkfd: fix null pointer dereference on dev - drm/amdkfd: Return proper error code for gws alloc API - drm/amdkfd: Remove GPU ID in GWS queue creation Signed-off-by: Oak Zeng <Oak.Zeng@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Add a new kfd ioctl to allocate queue GWS. Queue
GWS is released on queue destroy.

v2: re-introduce this API with the following fixes squashed in:
- drm/amdkfd: fix null pointer dereference on dev
- drm/amdkfd: Return proper error code for gws alloc API
- drm/amdkfd: Remove GPU ID in GWS queue creation

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: Delete unnecessary unmap queue package submissions 2020-02-26T19:20:33+00:00 Yong Zhao Yong.Zhao@amd.com 2020-02-05T21:53:37+00:00 c7637c95abebc811d2479a5b924859025def544a The previous way of using SDMA queue count to infer whether we should unmap SDMA engines has bugs. The reason it did not cause issues is because MEC firmware unmaps all queues (CP + SDMA) when a unmap package for compute engine is received. Becasue of that, only one unmap queue package is needed, instead of one unmap queue package for CP and each SDMA engine, which results in much simpler driver code. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
The previous way of using SDMA queue count to infer whether we should unmap
SDMA engines has bugs. The reason it did not cause issues is because MEC
firmware unmaps all queues (CP + SDMA) when a unmap package for compute
engine is received. Becasue of that, only one unmap queue package
is needed, instead of one unmap queue package for CP and each SDMA engine,
which results in much simpler driver code.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: Delete excessive printings 2020-02-26T19:20:26+00:00 Yong Zhao Yong.Zhao@amd.com 2020-02-05T23:22:48+00:00 1e21647402f953a0f1098b4ecfff751734c6c9ee Those printings are duplicated or useless. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Those printings are duplicated or useless.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: Fix a memory leak in queue creation error handling 2020-02-26T19:20:20+00:00 Yong Zhao Yong.Zhao@amd.com 2020-02-05T22:13:54+00:00 66f28b9a169855367d6e3ef71001969a8bffb19b When the queue creation failed, some resources were not freed. Fix it. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
When the queue creation failed, some resources were not freed. Fix it.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: Avoid ambiguity by indicating it's cp queue 2020-02-26T19:20:05+00:00 Yong Zhao Yong.Zhao@amd.com 2020-01-30T23:35:23+00:00 e6945304187deae0a28ebc65008ec11277f1c0f0 The queues represented in queue_bitmap are only CP queues. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
The queues represented in queue_bitmap are only CP queues.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: Rename queue_count to active_queue_count 2020-02-26T19:19:38+00:00 Yong Zhao Yong.Zhao@amd.com 2020-01-30T23:25:50+00:00 81b820b304a07fa4de9d46f095475555881af8fe The name is easier to understand the code. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
The name is easier to understand the code.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: Add queue information to sysfs 2020-02-06T20:04:38+00:00 Amber Lin Amber.Lin@amd.com 2020-01-30T05:08:05+00:00 6d220a7e7971ecabdf713554df44aca5640efb33 Provide compute queues information in sysfs under /sys/class/kfd/kfd/proc. The format is /sys/class/kfd/kfd/proc/<pid>/queues/<queue id>/XX where XX are size, type, and gpuid three files to represent queue size, queue type, and the GPU this queue uses. <queue id> folder and files underneath are generated when a queue is created. They are removed when the queue is destroyed. Signed-off-by: Amber Lin <Amber.Lin@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Provide compute queues information in sysfs under /sys/class/kfd/kfd/proc.
The format is /sys/class/kfd/kfd/proc/<pid>/queues/<queue id>/XX where
XX are size, type, and gpuid three files to represent queue size, queue
type, and the GPU this queue uses. <queue id> folder and files underneath
are generated when a queue is created. They are removed when the queue is
destroyed.

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdkfd: Avoid hanging hardware in stop_cpsch 2020-01-07T16:55:04+00:00 Felix Kuehling Felix.Kuehling@amd.com 2019-12-20T07:46:55+00:00 c2a77fde10ec2cac33a23c8ac53d181bc2fe0cee Don't use the HWS if it's known to be hanging. In a reset also don't try to destroy the HIQ because that may hang on SRIOV if the KIQ is unresponsive. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Tested-by: Emily Deng <Emily.Deng@amd.com> Reviewed-by: shaoyunl <shaoyun.liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Don't use the HWS if it's known to be hanging. In a reset also
don't try to destroy the HIQ because that may hang on SRIOV if the
KIQ is unresponsive.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: shaoyunl  <shaoyun.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>