bpf_send_signal_task
BTF_ID_FLAGS(func, bpf_send_signal_task)
ret = bpf_send_signal_task(target_task, sig, PIDTYPE_PID, value);
ret = bpf_send_signal_task(target_task, sig, PIDTYPE_TGID, value);
int bpf_send_signal_task(struct task_struct *task, int sig, enum pid_type type, u64 value) __ksym;