[Intel-gfx] [PATCH 12/15] drm/i915: Wait upon userptr get-user-pages within execbuffer

[Michał Winiarski]

On Thu, Feb 23, 2017 at 04:18:27PM +0000, Chris Wilson wrote:
> This simply hides the EAGAIN caused by userptr when userspace causes
> resource contention. However, it is quite beneficial with highly
> contended userptr users as we avoid repeating the setup costs and
> kernel-user context switches.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Reviewed-by: Michał Winiarski <michal.winiarski at intel.com>

-Michał

> ---
>  drivers/gpu/drm/i915/i915_drv.c            |  1 +
>  drivers/gpu/drm/i915/i915_drv.h            | 10 +++++++++-
>  drivers/gpu/drm/i915/i915_gem.c            |  4 +++-
>  drivers/gpu/drm/i915/i915_gem_execbuffer.c |  3 +++
>  drivers/gpu/drm/i915/i915_gem_userptr.c    | 18 +++++++++++++++---
>  5 files changed, 31 insertions(+), 5 deletions(-)