drm/amdkfd: Allocate doorbells only when needed

Browse source

Only allocate doorbells when the first queue is created on a GPU or the
doorbells need to be mapped into CPU or GPU virtual address space. This
avoids allocating doorbells unnecessarily and can allow more processes
to use KFD on multi-GPU systems.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Kent Russell <kent.Russell@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Felix Kuehling 2022-08-03 14:45:45 -04:00 • committed by Alex Deucher

parent 8243df4778

commit 16f0013157

3 changed files with 22 additions and 5 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

13

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

View file

9

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

View file

5

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

View file