Re: [Intel-gfx] linux-next: Tree for Jul 25 [ call-trace: drm |drm-intel related? ]

[Sedat Dilek]

On Thu, Jul 25, 2013 at 7:26 PM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:
> On Thu, Jul 25, 2013 at 07:15:03PM +0200, Sedat Dilek wrote:
>> On Thu, Jul 25, 2013 at 7:01 PM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:
>> > Basically boils down to either an object allocation failure or mmaping
>> > failure. I think dmesg with drm.debug=7 is the next step.
>>
>> Attached! Thanks for taking care.
>
> Hmm, looks like i915_gem_map_gtt fails, but no reason given, so can you
> please apply this for more debug:
>
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index 0563661..34e09bf 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -1630,24 +1630,29 @@ i915_gem_mmap_gtt(struct drm_file *file,
>
>         obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
>         if (&obj->base == NULL) {
> +               DRM_DRIVER_DEBUG("Unknown object handle %d\n", handle);
>                 ret = -ENOENT;
>                 goto unlock;
>         }
>
>         if (obj->base.size > dev_priv->gtt.mappable_end) {
> +               DRM_DRIVER_DEBUG("Object (%d) larger than mappable aperture (%d) > %d\n",
> +                               (int)obj->base.size, (int)dev_priv->gtt.mappable_end);
>                 ret = -E2BIG;
>                 goto out;
>         }
>
>         if (obj->madv != I915_MADV_WILLNEED) {
> -               DRM_ERROR("Attempting to mmap a purgeable buffer\n");
> +               DRM_DRIVER_DEBUG("Attempting to mmap a purgeable buffer\n");
>                 ret = -EINVAL;
>                 goto out;
>         }
>
>         ret = i915_gem_object_create_mmap_offset(obj);
> -       if (ret)
> +       if (ret) {
> +               DRM_DRIVER_DEBUG("Failed to allocate mmap offset (ret=%d)\n", ret);
>                 goto out;
> +       }
>
>         *offset = (u64)obj->base.map_list.hash.key << PAGE_SHIFT;
>
> --

This does not apply... After refreshing and some cleanups... does not build:

$ LANG=C LC_ALL=C make M=drivers/gpu/drm/i915
  LD      drivers/gpu/drm/i915/built-in.o
  CC [M]  drivers/gpu/drm/i915/i915_drv.o
  CC [M]  drivers/gpu/drm/i915/i915_dma.o
  CC [M]  drivers/gpu/drm/i915/i915_irq.o
  CC [M]  drivers/gpu/drm/i915/i915_debugfs.o
  CC [M]  drivers/gpu/drm/i915/i915_gpu_error.o
  CC [M]  drivers/gpu/drm/i915/i915_suspend.o
  CC [M]  drivers/gpu/drm/i915/i915_gem.o
drivers/gpu/drm/i915/i915_gem.c: In function 'i915_gem_mmap_gtt':
drivers/gpu/drm/i915/i915_gem.c:1538:3: error: implicit declaration of
function 'DRM_DRIVER_DEBUG' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[1]: *** [drivers/gpu/drm/i915/i915_gem.o] Error 1
make: *** [_module_drivers/gpu/drm/i915] Error 2

- Sedat -

> Chris Wilson, Intel Open Source Technology Centre
> --
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Attachment: 1-v2.patch
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