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@xxxxxxxxx>
Cc: Alex Dai <yu.dai@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
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
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