[PATCH 0/3 - small lock v3] split 3 small locks from big gvt lock

[pei.zhang at intel.com]

From: Pei Zhang <pei.zhang at intel.com>

This serial patches will split out 3 small locks from the original big gvt lock, which are:
1. per-vGPU lock, it will protect the per-vGPU data and logic, especially the vGPU trap emulation path.
2. schedule lock, it will protect the context schedule logic. Protect the gvt scheudler structure and vGPU's schedule data.
3. gtt lock, it's used to protect the gvt global gtt oos lists.
While the 3 new locks are used, the origianl gvt lock will be rarely used. One usage example is to protect the available vGPU list.

V3: update to latest code base
V2: fix 2 places lock scope error

Pei Zhang (3):
  drm/i915/gvt: use gtt lock to protect gtt list
  drm/i915/gvt: use per vgpu lock
  drm/i915/gvt: use scheduler lock

 drivers/gpu/drm/i915/gvt/display.c      | 11 +++----
 drivers/gpu/drm/i915/gvt/gtt.c          | 56 ++++++++++++++++++++++++++++-----
 drivers/gpu/drm/i915/gvt/gvt.c          |  7 ++---
 drivers/gpu/drm/i915/gvt/gvt.h          | 18 +++++++++++
 drivers/gpu/drm/i915/gvt/handlers.c     |  2 ++
 drivers/gpu/drm/i915/gvt/mmio.c         | 12 +++----
 drivers/gpu/drm/i915/gvt/sched_policy.c | 41 ++++++++++++++++++++----
 drivers/gpu/drm/i915/gvt/scheduler.c    | 21 ++++++++-----
 drivers/gpu/drm/i915/gvt/vgpu.c         | 56 +++++++++++++++------------------
 9 files changed, 154 insertions(+), 70 deletions(-)

-- 
2.7.4