[PATCH v5 2/8] drm/i915/gvt: add some statistic routine for scheduler
Ping Gao
ping.a.gao at intel.com
Tue Mar 28 06:47:32 UTC 2017
Add some statistic routine to collect the time when vGPU is
scheduled in/out and the time of the last ctx submission.
Rename some schedule structure.
Signed-off-by: Ping Gao <ping.a.gao at intel.com>
---
drivers/gpu/drm/i915/gvt/gvt.h | 5 +++
drivers/gpu/drm/i915/gvt/handlers.c | 1 +
drivers/gpu/drm/i915/gvt/sched_policy.c | 67 +++++++++++++++++++++------------
3 files changed, 48 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 7455214..fe7f5ae8 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -138,6 +138,10 @@ struct intel_vgpu_display {
struct intel_vgpu_sbi sbi;
};
+struct vgpu_sched_ctl {
+ int weight;
+};
+
struct intel_vgpu {
struct intel_gvt *gvt;
int id;
@@ -160,6 +164,7 @@ struct intel_vgpu {
struct list_head workload_q_head[I915_NUM_ENGINES];
struct kmem_cache *workloads;
atomic_t running_workload_num;
+ ktime_t last_ctx_submit_time;
DECLARE_BITMAP(tlb_handle_pending, I915_NUM_ENGINES);
struct i915_gem_context *shadow_ctx;
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index 6da9ae1..c0689b6 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -1418,6 +1418,7 @@ static int elsp_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
execlist->elsp_dwords.data[execlist->elsp_dwords.index] = data;
if (execlist->elsp_dwords.index == 3) {
+ vgpu->last_ctx_submit_time = ktime_get();
ret = intel_vgpu_submit_execlist(vgpu, ring_id);
if(ret)
gvt_vgpu_err("fail submit workload on ring %d\n",
diff --git a/drivers/gpu/drm/i915/gvt/sched_policy.c b/drivers/gpu/drm/i915/gvt/sched_policy.c
index fb9ddce..3a1fe38 100644
--- a/drivers/gpu/drm/i915/gvt/sched_policy.c
+++ b/drivers/gpu/drm/i915/gvt/sched_policy.c
@@ -47,11 +47,33 @@ static bool vgpu_has_pending_workload(struct intel_vgpu *vgpu)
return false;
}
+struct vgpu_sched_data {
+ struct list_head list;
+ struct intel_vgpu *vgpu;
+
+ ktime_t sched_in_time;
+ ktime_t sched_out_time;
+ ktime_t sched_time;
+ ktime_t left_ts;
+ ktime_t allocated_ts;
+
+ struct vgpu_sched_ctl sched_ctl;
+};
+
+struct gvt_sched_data {
+ struct intel_gvt *gvt;
+ struct hrtimer timer;
+ unsigned long period;
+ struct list_head runq_head;
+};
+
static void try_to_schedule_next_vgpu(struct intel_gvt *gvt)
{
struct intel_gvt_workload_scheduler *scheduler = &gvt->scheduler;
enum intel_engine_id i;
struct intel_engine_cs *engine;
+ struct vgpu_sched_data *vgpu_data;
+ ktime_t cur_time;
/* no target to schedule */
if (!scheduler->next_vgpu)
@@ -77,6 +99,14 @@ static void try_to_schedule_next_vgpu(struct intel_gvt *gvt)
gvt_dbg_sched("switch to next vgpu %d\n",
scheduler->next_vgpu->id);
+ cur_time = ktime_get();
+ if (scheduler->current_vgpu) {
+ vgpu_data = scheduler->current_vgpu->sched_data;
+ vgpu_data->sched_out_time = cur_time;
+ }
+ vgpu_data = scheduler->next_vgpu->sched_data;
+ vgpu_data->sched_in_time = cur_time;
+
/* switch current vgpu */
scheduler->current_vgpu = scheduler->next_vgpu;
scheduler->next_vgpu = NULL;
@@ -88,24 +118,11 @@ static void try_to_schedule_next_vgpu(struct intel_gvt *gvt)
wake_up(&scheduler->waitq[i]);
}
-struct tbs_vgpu_data {
- struct list_head list;
- struct intel_vgpu *vgpu;
- /* put some per-vgpu sched stats here */
-};
-
-struct tbs_sched_data {
- struct intel_gvt *gvt;
- struct hrtimer timer;
- unsigned long period;
- struct list_head runq_head;
-};
-
#define GVT_DEFAULT_TIME_SLICE 1000000
-static void tbs_sched_func(struct tbs_sched_data *sched_data)
+static void tbs_sched_func(struct gvt_sched_data *sched_data)
{
- struct tbs_vgpu_data *vgpu_data;
+ struct vgpu_sched_data *vgpu_data;
struct intel_gvt *gvt = sched_data->gvt;
struct intel_gvt_workload_scheduler *scheduler = &gvt->scheduler;
@@ -129,7 +146,7 @@ static void tbs_sched_func(struct tbs_sched_data *sched_data)
if (pos == &sched_data->runq_head)
continue;
- vgpu_data = container_of(pos, struct tbs_vgpu_data, list);
+ vgpu_data = container_of(pos, struct vgpu_sched_data, list);
if (!vgpu_has_pending_workload(vgpu_data->vgpu))
continue;
@@ -151,7 +168,7 @@ static void tbs_sched_func(struct tbs_sched_data *sched_data)
void intel_gvt_schedule(struct intel_gvt *gvt)
{
- struct tbs_sched_data *sched_data = gvt->scheduler.sched_data;
+ struct gvt_sched_data *sched_data = gvt->scheduler.sched_data;
mutex_lock(&gvt->lock);
tbs_sched_func(sched_data);
@@ -160,9 +177,9 @@ void intel_gvt_schedule(struct intel_gvt *gvt)
static enum hrtimer_restart tbs_timer_fn(struct hrtimer *timer_data)
{
- struct tbs_sched_data *data;
+ struct gvt_sched_data *data;
- data = container_of(timer_data, struct tbs_sched_data, timer);
+ data = container_of(timer_data, struct gvt_sched_data, timer);
intel_gvt_request_service(data->gvt, INTEL_GVT_REQUEST_SCHED);
@@ -176,7 +193,7 @@ static int tbs_sched_init(struct intel_gvt *gvt)
struct intel_gvt_workload_scheduler *scheduler =
&gvt->scheduler;
- struct tbs_sched_data *data;
+ struct gvt_sched_data *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
@@ -197,7 +214,7 @@ static void tbs_sched_clean(struct intel_gvt *gvt)
{
struct intel_gvt_workload_scheduler *scheduler =
&gvt->scheduler;
- struct tbs_sched_data *data = scheduler->sched_data;
+ struct gvt_sched_data *data = scheduler->sched_data;
hrtimer_cancel(&data->timer);
@@ -207,7 +224,7 @@ static void tbs_sched_clean(struct intel_gvt *gvt)
static int tbs_sched_init_vgpu(struct intel_vgpu *vgpu)
{
- struct tbs_vgpu_data *data;
+ struct vgpu_sched_data *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
@@ -229,8 +246,8 @@ static void tbs_sched_clean_vgpu(struct intel_vgpu *vgpu)
static void tbs_sched_start_schedule(struct intel_vgpu *vgpu)
{
- struct tbs_sched_data *sched_data = vgpu->gvt->scheduler.sched_data;
- struct tbs_vgpu_data *vgpu_data = vgpu->sched_data;
+ struct gvt_sched_data *sched_data = vgpu->gvt->scheduler.sched_data;
+ struct vgpu_sched_data *vgpu_data = vgpu->sched_data;
if (!list_empty(&vgpu_data->list))
return;
@@ -244,7 +261,7 @@ static void tbs_sched_start_schedule(struct intel_vgpu *vgpu)
static void tbs_sched_stop_schedule(struct intel_vgpu *vgpu)
{
- struct tbs_vgpu_data *vgpu_data = vgpu->sched_data;
+ struct vgpu_sched_data *vgpu_data = vgpu->sched_data;
list_del_init(&vgpu_data->list);
}
--
2.7.4
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