[PATCH] drm/i915/gvt: Fix gvt scheduler interval time

[Zhenyu Wang <zhenyuw@linux.intel.com>]

Fix to correctly assign 1ms for gvt scheduler interval time,
as previous code using HZ is pretty broken. And use no delay
for start gvt scheduler function.

Fixes: 4b63960ebd3f ("drm/i915/gvt: vGPU schedule policy framework")
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: stable@vger.kernel.org # v4.10+
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
---
 drivers/gpu/drm/i915/gvt/sched_policy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/sched_policy.c b/drivers/gpu/drm/i915/gvt/sched_policy.c
index 06c9584ac5f0..34b9acdf3479 100644
--- a/drivers/gpu/drm/i915/gvt/sched_policy.c
+++ b/drivers/gpu/drm/i915/gvt/sched_policy.c
@@ -101,7 +101,7 @@ struct tbs_sched_data {
 	struct list_head runq_head;
 };
 
-#define GVT_DEFAULT_TIME_SLICE (1 * HZ / 1000)
+#define GVT_DEFAULT_TIME_SLICE (msecs_to_jiffies(1))
 
 static void tbs_sched_func(struct work_struct *work)
 {
@@ -223,7 +223,7 @@ static void tbs_sched_start_schedule(struct intel_vgpu *vgpu)
 		return;
 
 	list_add_tail(&vgpu_data->list, &sched_data->runq_head);
-	schedule_delayed_work(&sched_data->work, sched_data->period);
+	schedule_delayed_work(&sched_data->work, 0);
 }
 
 static void tbs_sched_stop_schedule(struct intel_vgpu *vgpu)
-- 
2.11.0