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

[Daniel Vetter]

On Sun, Feb 14, 2016 at 11:16:52AM +0200, Oded Gabbay 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)

Care to throw one patch on top (maybe on top of the patch floating around)
to reorder amdkfd to be alphabetical? Just to make sure this doesn't get
broken again accidentally. Or maybe just pick up the other patch and adapt
it so it's all in one series.

Thanks, Daniel
> 
> 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
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch