dtrace_stability_t
dtrace_stability_t s;
dtrace_stability_name(dtrace_stability_t s)
extern const char *dtrace_stability_name(dtrace_stability_t);
dtj_stability_name(dtrace_stability_t stability)
dtrace_stability_t dtat_name; /* entity name stability */
dtrace_stability_t dtat_data; /* entity data stability */