diff options
| author | Ping Gao | 2017-06-29 06:22:43 +0200 |
|---|---|---|
| committer | Zhenyu Wang | 2017-08-10 04:26:07 +0200 |
| commit | d0302e74003bf1f0fc41c06948b745204c4704ea (patch) | |
| tree | 937393c462eae58aaa09657d927682bf48926c6e /drivers/gpu/drm/i915/gvt/scheduler.c | |
| parent | drm/i915/gvt: Factor out scan and shadow from workload dispatch (diff) | |
| download | kernel-qcow2-linux-d0302e74003bf1f0fc41c06948b745204c4704ea.tar.gz kernel-qcow2-linux-d0302e74003bf1f0fc41c06948b745204c4704ea.tar.xz kernel-qcow2-linux-d0302e74003bf1f0fc41c06948b745204c4704ea.zip | |
drm/i915/gvt: Audit and shadow workload during ELSP writing
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>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/scheduler.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/scheduler.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c index 7929c0285d1d..bd59c6d09319 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.c +++ b/drivers/gpu/drm/i915/gvt/scheduler.c @@ -201,6 +201,9 @@ int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload) struct intel_vgpu *vgpu = workload->vgpu; int ret; + if (workload->shadowed) + return 0; + shadow_ctx->desc_template &= ~(0x3 << GEN8_CTX_ADDRESSING_MODE_SHIFT); shadow_ctx->desc_template |= workload->ctx_desc.addressing_mode << GEN8_CTX_ADDRESSING_MODE_SHIFT; @@ -228,6 +231,10 @@ int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload) } ret = populate_shadow_context(workload); + if (ret) + goto out; + + workload->shadowed = true; out: return ret; |