lockstat_probe
lockstat_probe = dtrace_probe;
void (*lockstat_probe)(dtrace_id_t, uintptr_t, uintptr_t,
extern void (*lockstat_probe)(dtrace_id_t, uintptr_t, uintptr_t,
(*lockstat_probe)(id, (uintptr_t)(lp), (arg0), \
(*lockstat_probe)(id, (uintptr_t)(lp), t_spin, \