From: Zhenyu Wang <zhenyuw@linux.intel.com>
Date: Thu, 22 Feb 2018 15:16:13 +0800
Subject: drm/i915/gvt: Fix vGPU sched timeslice calculation warning
Git-commit: 9803984581de2b09290338687a3d21a7cd16685b
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Fix below warning by using proper ktime helper to calculate timeslice.
CHECK drivers/gpu/drm/i915//gvt/sched_policy.c
drivers/gpu/drm/i915//gvt/sched_policy.c:108 gvt_balance_timeslice() debug: sval_binop_signed: invalid divide LLONG_MIN/-1
drivers/gpu/drm/i915//gvt/sched_policy.c:108 gvt_balance_timeslice() debug: sval_binop_signed: invalid divide LLONG_MIN/-1
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/i915/gvt/sched_policy.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/i915/gvt/sched_policy.c
+++ b/drivers/gpu/drm/i915/gvt/sched_policy.c
@@ -103,9 +103,8 @@ static void gvt_balance_timeslice(struct
list_for_each(pos, &sched_data->lru_runq_head) {
vgpu_data = container_of(pos, struct vgpu_sched_data, lru_list);
- fair_timeslice = ms_to_ktime(GVT_TS_BALANCE_PERIOD_MS) *
- vgpu_data->sched_ctl.weight /
- total_weight;
+ fair_timeslice = ktime_divns(ms_to_ktime(GVT_TS_BALANCE_PERIOD_MS),
+ total_weight) * vgpu_data->sched_ctl.weight;
vgpu_data->allocated_ts = fair_timeslice;
vgpu_data->left_ts = vgpu_data->allocated_ts;