From b35f34d1da4e77637869c8041a355da810f69fb6 Mon Sep 17 00:00:00 2001 From: Ping Gao Date: Thu, 30 Mar 2017 00:36:40 +0800 Subject: [PATCH] drm/i915/gvt: control the scheduler by timeslice usage The timeslice usage will determine vGPU whether has chance to schedule or not at every vGPU switch checkpoint. Signed-off-by: Ping Gao Reviewed-by: Kevin Tian Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/sched_policy.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gvt/sched_policy.c b/drivers/gpu/drm/i915/gvt/sched_policy.c index dd5b38c3e4ed..f84959170674 100644 --- a/drivers/gpu/drm/i915/gvt/sched_policy.c +++ b/drivers/gpu/drm/i915/gvt/sched_policy.c @@ -187,8 +187,11 @@ static struct intel_vgpu *find_busy_vgpu(struct gvt_sched_data *sched_data) if (!vgpu_has_pending_workload(vgpu_data->vgpu)) continue; - vgpu = vgpu_data->vgpu; - break; + /* Return the vGPU only if it has time slice left */ + if (vgpu_data->left_ts > 0) { + vgpu = vgpu_data->vgpu; + break; + } } return vgpu; @@ -223,6 +226,8 @@ static void tbs_sched_func(struct gvt_sched_data *sched_data) &sched_data->lru_runq_head); gvt_dbg_sched("pick next vgpu %d\n", vgpu->id); + } else { + scheduler->next_vgpu = gvt->idle_vgpu; } out: if (scheduler->next_vgpu) { -- 2.20.1