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hv: sched_bvt: add init and deinit function 

Add init function for bvt scheduler, creating a runqueue and a period
timer, the timer interval is default as 1ms. The interval is the minimum
charging unit.

Tracked-On: #4410

Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Conghui Chen 2020-02-06 16:02:10 +00:00 committed by wenlingz
parent a7563cb9bd
commit e05eb42c1e
1 changed files with 42 additions and 7 deletions
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49
hypervisor/common/sched_bvt.c
View File

@ -30,17 +30,52 @@ struct sched_bvt_data {
uint64_t start_tsc;
};
static int sched_bvt_init(__unused struct sched_control *ctl)
{
return 0;
}
static void sched_bvt_deinit(__unused struct sched_control *ctl)
static void sched_tick_handler(__unused void *param)
{
}
static void sched_bvt_init_data(__unused struct thread_object *obj)
/*
*@pre: ctl->pcpu_id == get_pcpu_id()
*/
static int sched_bvt_init(struct sched_control *ctl)
{
struct sched_bvt_control *bvt_ctl = &per_cpu(sched_bvt_ctl, ctl->pcpu_id);
uint64_t tick_period = BVT_MCU_MS * CYCLES_PER_MS;
int ret = 0;
ASSERT(ctl->pcpu_id == get_pcpu_id(), "Init scheduler on wrong CPU!");
ctl->priv = bvt_ctl;
INIT_LIST_HEAD(&bvt_ctl->runqueue);
/* The tick_timer is periodically */
initialize_timer(&bvt_ctl->tick_timer, sched_tick_handler, ctl,
rdtsc() + tick_period, TICK_MODE_PERIODIC, tick_period);
if (add_timer(&bvt_ctl->tick_timer) < 0) {
pr_err("Failed to add schedule tick timer!");
ret = -1;
}
return ret;
}
static void sched_bvt_deinit(struct sched_control *ctl)
{
struct sched_bvt_control *bvt_ctl = (struct sched_bvt_control *)ctl->priv;
del_timer(&bvt_ctl->tick_timer);
}
static void sched_bvt_init_data(struct thread_object *obj)
{
struct sched_bvt_data *data;
data = (struct sched_bvt_data *)obj->data;
INIT_LIST_HEAD(&data->list);
data->mcu = BVT_MCU_MS * CYCLES_PER_MS;
/* TODO: virtual time advance ratio should be proportional to weight. */
data->vt_ratio = 1U;
data->run_countdown = BVT_CSA_MCU;
}
static struct thread_object *sched_bvt_pick_next(__unused struct sched_control *ctl)