sys_thr_suspend
{ .sy_narg = AS(thr_suspend_args), .sy_call = (sy_call_t *)sys_thr_suspend, .sy_auevent = AUE_NULL, .sy_flags = SYF_CAPENABLED, .sy_thrcnt = SY_THR_STATIC }, /* 442 = thr_suspend */
int sys_thr_suspend(struct thread *, struct thr_suspend_args *);