LBOLT_NO_ACCOUNT
clock_t now = LBOLT_NO_ACCOUNT; /* current tick */
ctp->ct_lbolt = LBOLT_NO_ACCOUNT;
LBOLT_NO_ACCOUNT, 1);
clock_tick_process(CPU, LBOLT_NO_ACCOUNT, clock_tick_pending);
panic_lbolt = LBOLT_NO_ACCOUNT;