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drm/i915/gvt: cancel scheduler timer when no vGPU exists

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Stop gvt scheduler timer if no vGPU exists, otherwise it keeps
gvt service thread busy to handle request schedule event but no
actual schedule activity required.

Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Zhenyu Wang 2018-01-15 16:36:12 +08:00 committed by Rodrigo Vivi
parent 14b4434bff
commit 61a669473f
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/i915/gvt/sched_policy.c
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@ -308,8 +308,15 @@ static int tbs_sched_init_vgpu(struct intel_vgpu *vgpu)
static void tbs_sched_clean_vgpu(struct intel_vgpu *vgpu)
{
struct intel_gvt *gvt = vgpu->gvt;
struct gvt_sched_data *sched_data = gvt->scheduler.sched_data;
kfree(vgpu->sched_data);
vgpu->sched_data = NULL;
/* this vgpu id has been removed */
if (idr_is_empty(&gvt->vgpu_idr))
hrtimer_cancel(&sched_data->timer);
}
static void tbs_sched_start_schedule(struct intel_vgpu *vgpu)