[RFC v3 0/9] make performance is associated with vGPU type

[Ping Gao]

v3:	1. rename dummy vGPU to idle vGPU.
	2. introduce an enum for num_vgpu_sched.
	3. rename some structure and function.
	4. comments elaborating. 
	5. didnot add statitic interface as no per-vgpu interface exist.

v2:
        1. use hrtimer to replace delay_work to trigger scheduler.
        2. introduce dummy vGPU to help handle performance control.
        3. introduce vGPU LRU list to handle longest unsched vGPU.
        4. Test result(stability and precision) seems good.

v1:
	1. Currrently, scheduler is triggered by delay_work, it's only can be
	   accurate at 10ms level, so have to change the scheduler period to
	   10ms, it will have stability impact.
	2. Test two vGPU type 2 and type 5, the fps of tropic in two guest show 
  	   about 5:2, it's workable but the precision is not good.

	TODO: 1. Use htimer replace the delay_work to trigger scheduler.
	      2. Create dummy vGPU to help caculation.   

Ping Gao (9):
  drm/i915/gvt: use hrtimer replace delayed_work in scheduler
  drm/i915/gvt: create an idle vGPU
  drm/i915/gvt: insert the idle vGPU into scheduler
  drm/i915/gvt: add some statistic routine for scheduler
  drm/i915/gvt: factor out the scheduler
  drm/i915/gvt: introduce the vGPU LRU list
  drm/i915/gvt: add basic function for weight control
  drm/i915/gvt: control the scheduler by timeslice usage
  drm/i915/gvt: define weight according to vGPU type

 drivers/gpu/drm/i915/gvt/gvt.c          |  17 ++
 drivers/gpu/drm/i915/gvt/gvt.h          |  15 ++
 drivers/gpu/drm/i915/gvt/handlers.c     |   1 +
 drivers/gpu/drm/i915/gvt/kvmgt.c        |   4 +-
 drivers/gpu/drm/i915/gvt/sched_policy.c | 356 +++++++++++++++++++++++++++-----
 drivers/gpu/drm/i915/gvt/sched_policy.h |   2 +
 drivers/gpu/drm/i915/gvt/vgpu.c         |  59 ++++++
 7 files changed, 402 insertions(+), 52 deletions(-)

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2.7.4