[Intel-gfx] [PATCH v4 0/3] Reorganise calls to vmap() GEM objects

[Dave Gordon]

Alex Dai and Chris Wilson have both recently posted patches to
rationalise the use of vmap() for mapping GEM objects into kernel
virtual space. However, they addressed different areas, with Alex's
patch being derived from the copy_batch() code, whereas Chris' patch
refactored the dma-buf and ringbuffer code.

So this patchset unifies the two, copying Chris' interfaces which
unite pin-and-vmap for convenient lifecycle management, but using
Alex's code underneath to permit partial mappings. And finally
there's a little optimisation I've added for "small" objects e.g.
ringbuffers and contexts, which are expected to be the objects most
commonly handled by this code.

Signed-off-by: Dave Gordon <david.s.gordon at intel.com>
Cc: Alex Dai <yu.dai at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>

Alex Dai (1):
  drm/i915: add i915_gem_object_vmap_range() to map GEM object to
    virtual space

Dave Gordon (2):
  drm/i915: refactor duplicate object vmap functions (reworked)
  drm/i915: optimise i915_gem_object_vmap_range() for small objects

 drivers/gpu/drm/i915/i915_cmd_parser.c  | 28 +---------
 drivers/gpu/drm/i915/i915_drv.h         | 15 ++++--
 drivers/gpu/drm/i915/i915_gem.c         | 94 +++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/i915_gem_dmabuf.c  | 53 +++----------------
 drivers/gpu/drm/i915/intel_ringbuffer.c | 52 ++++++------------
 5 files changed, 128 insertions(+), 114 deletions(-)

-- 
1.9.1