[PATCH 11/11] drm/amdgpu: stop removing BOs from the LRU during CS

[Marek Olšák]

This series fixes the OOM errors. However, if I torture the kernel driver
more, I can get it to deadlock and end up with unkillable processes. I can
also get an OOM error. I just ran the test 5 times:

AMD_DEBUG=testgdsmm glxgears & AMD_DEBUG=testgdsmm glxgears &
AMD_DEBUG=testgdsmm glxgears & AMD_DEBUG=testgdsmm glxgears &
AMD_DEBUG=testgdsmm glxgears

Marek

On Tue, May 14, 2019 at 8:31 AM Christian König <
ckoenig.leichtzumerken at gmail.com> wrote:

> This avoids OOM situations when we have lots of threads
> submitting at the same time.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> index fff558cf385b..f9240a94217b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> @@ -648,7 +648,7 @@ static int amdgpu_cs_parser_bos(struct
> amdgpu_cs_parser *p,
>         }
>
>         r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
> -                                  &duplicates, true);
> +                                  &duplicates, false);
>         if (unlikely(r != 0)) {
>                 if (r != -ERESTARTSYS)
>                         DRM_ERROR("ttm_eu_reserve_buffers failed.\n");
> --
> 2.17.1
>
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