drm/amdkfd: Queue interrupt work to different CPU

Browse source

For CPX mode, each KFD node has interrupt worker to process ih_fifo to
send events to user space. Currently all interrupt workers of same adev
queue to same CPU, all workers execution are actually serialized and
this cause KFD ih_fifo overflow when CPU usage is high.

Use per-GPU unbounded highpri queue with number of workers equals to
number of partitions, let queue_work select the next CPU round robin
among the local CPUs of same NUMA.

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>

...

This commit is contained in:

Philip Yang 2024-11-26 11:33:15 -05:00 • committed by Alex Deucher

parent 1b00143231

commit 34db5a3261

3 changed files with 20 additions and 33 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

25

drivers/gpu/drm/amd/amdkfd/kfd_device.c

View file

25

drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c

View file

3

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

View file