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hv: sched: add kick_thread to support notification

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kick means to notify one thread_object. If the target thread object is
running, send a IPI to notify it; if the target thread object is
runnable, make reschedule on it.

Also add kick_vcpu API in vcpu layer to notify vcpu.

Tracked-On: #3813
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Signed-off-by: Yu Wang <yu1.wang@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:
Shuo A Liu
2019-06-18 17:49:56 +08:00
committed by wenlingz
parent 810305be98
commit 5f8e7a6cb7
5 changed files with 36 additions and 14 deletions
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18
hypervisor/common/schedule.c
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@@ -222,6 +222,24 @@ void wake_thread(struct thread_object *obj)
release_schedule_lock(pcpu_id, rflag);
}
void kick_thread(const struct thread_object *obj)
{
uint16_t pcpu_id = obj->pcpu_id;
uint64_t rflag;
obtain_schedule_lock(pcpu_id, &rflag);
if (is_running(obj)) {
if (get_pcpu_id() != pcpu_id) {
send_single_ipi(pcpu_id, VECTOR_NOTIFY_VCPU);
}
} else if (is_runnable(obj)) {
make_reschedule_request(pcpu_id, DEL_MODE_IPI);
} else {
/* do nothing */
}
release_schedule_lock(pcpu_id, rflag);
}
void run_thread(struct thread_object *obj)
{
uint64_t rflag;