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drm/i915/gvt: Audit and shadow workload during ELSP writing

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Let the workload audit and shadow ahead of vGPU scheduling, that
will eliminate GPU idle time and improve performance for multi-VM.

The performance of Heaven running simultaneously in 3VMs has
improved 20% after this patch.

v2:Remove condition current->vgpu==vgpu when shadow during ELSP
writing.

Signed-off-by: Ping Gao <ping.a.gao@intel.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Ping Gao
2017-06-29 12:22:43 +08:00
committed by Zhenyu Wang
parent 89ea20b930
commit d0302e7400
3 changed files with 19 additions and 0 deletions
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drivers/gpu/drm/i915/gvt/scheduler.h
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@@ -82,6 +82,7 @@ struct intel_vgpu_workload {
struct drm_i915_gem_request *req;
/* if this workload has been dispatched to i915? */
bool dispatched;
bool shadowed;
int status;
struct intel_vgpu_mm *shadow_mm;