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hv: sched_bvt: add tick hanlder

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Count down number will be decreased at each tick, when it comes to zero,
it will trigger reschedule.

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 2020-02-10 16:36:44 +00:00 committed by wenlingz
parent 77c64ecb79
commit ad606102d2
1 changed files with 26 additions and 1 deletions
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27
hypervisor/common/sched_bvt.c
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@ -113,8 +113,33 @@ static int64_t get_svt(struct thread_object *obj)
return svt;
}
static void sched_tick_handler(__unused void *param)
static void sched_tick_handler(void *param)
{
struct sched_control *ctl = (struct sched_control *)param;
struct sched_bvt_control *bvt_ctl = (struct sched_bvt_control *)ctl->priv;
struct sched_bvt_data *data;
struct thread_object *current;
uint16_t pcpu_id = get_pcpu_id();
uint64_t rflags;
obtain_schedule_lock(pcpu_id, &rflags);
current = ctl->curr_obj;
if (current != NULL ) {
data = (struct sched_bvt_data *)current->data;
/* only non-idle thread need to consume run_countdown */
if (!is_idle_thread(current)) {
data->run_countdown -= 1U;
if (data->run_countdown == 0U) {
make_reschedule_request(pcpu_id, DEL_MODE_IPI);
}
} else {
if (!list_empty(&bvt_ctl->runqueue)) {
make_reschedule_request(pcpu_id, DEL_MODE_IPI);
}
}
}
release_schedule_lock(pcpu_id, rflags);
}
/*