[PATCH 0/3] Deferr load of radeon/amdgpu until amdkfd is loaded

[Alex Deucher]

On Sun, Feb 14, 2016 at 4:16 AM, Oded Gabbay <oded.gabbay at gmail.com> wrote:
> Following Daniel's request, I spent some time removing the hard requirement
> that radeon and amdgpu will always appear _after_ amdkfd in the drm Makefile.
>
> This was done by modifing radeon/amdgpu to defer their loading if they detect
> that amdkfd is not loaded yet, in case the drivers are built inside the
> kernel image.
>
> See the patch's individiual commit messages for more explanation.
>
> This patch-set was tested on a KAVERI machine, with multiple configurations:
>
> 1. radeon + amdgpu (CIK disabled) + amdkfd as kernel modules
> 2. radeon + amdgpu (CIK disabled) + amdkfd inside the kernel image
> 3. amdgpu (CIK enabled) + amdkfd inside the kernel image (radeon not compiled)
> 4. amdgpu (CIK enabled) inside the kernel image (radeon + amdkfd not compiled)
> 5. radeon + amdgpu (CIK disabled) as kernel modules (amdkfd not compiled)

For the series:
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>


>
> Thanks,
>
>     Oded
>
> Oded Gabbay (3):
>   drm/amdkfd: Track when module's init is complete
>   drm/radeon: Return -EPROBE_DEFER when amdkfd not loaded
>   drm/amdgpu: Return -EPROBE_DEFER when amdkfd not loaded
>
>  drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c      | 57 +++++++++----------------
>  drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h      |  2 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c         | 10 ++++-
>  drivers/gpu/drm/amd/amdkfd/kfd_module.c         | 15 +++++--
>  drivers/gpu/drm/amd/include/kgd_kfd_interface.h |  2 +-
>  drivers/gpu/drm/radeon/radeon_drv.c             | 10 ++++-
>  drivers/gpu/drm/radeon/radeon_kfd.c             | 25 ++++++-----
>  drivers/gpu/drm/radeon/radeon_kfd.h             |  2 +-
>  8 files changed, 64 insertions(+), 59 deletions(-)
>
> --
> 2.5.0
>