4471 DTrace count() with histogram
4472 DTrace full width distribution histograms
4473 DTrace frequency trails

*** 351,360 ****
--- 351,366 ----
   */
  
  #define DTRACE_A_PERCPU         0x0001
  #define DTRACE_A_KEEPDELTA      0x0002
  #define DTRACE_A_ANONYMOUS      0x0004
+ #define DTRACE_A_TOTAL          0x0008
+ #define DTRACE_A_MINMAXBIN      0x0010
+ #define DTRACE_A_HASNEGATIVES   0x0020
+ #define DTRACE_A_HASPOSITIVES   0x0040
+ 
+ #define DTRACE_AGGZOOM_MAX              0.95    /* height of max bar */
  
  #define DTRACE_AGGWALK_ERROR            -1      /* error while processing */
  #define DTRACE_AGGWALK_NEXT             0       /* proceed to next element */
  #define DTRACE_AGGWALK_ABORT            1       /* abort aggregation walk */
  #define DTRACE_AGGWALK_CLEAR            2       /* clear this element */
*** 371,380 ****
--- 377,390 ----
          uint64_t dtada_normal;                  /* the normal -- 1 for denorm */
          size_t dtada_size;                      /* total size of the data */
          caddr_t dtada_delta;                    /* delta data, if available */
          caddr_t *dtada_percpu;                  /* per CPU data, if avail */
          caddr_t *dtada_percpu_delta;            /* per CPU delta, if avail */
+         int64_t dtada_total;                    /* per agg total, if avail */
+         uint16_t dtada_minbin;                  /* minimum bin, if avail */
+         uint16_t dtada_maxbin;                  /* maximum bin, if avail */
+         uint32_t dtada_flags;                   /* flags */
  };
  
  typedef int dtrace_aggregate_f(const dtrace_aggdata_t *, void *);
  typedef int dtrace_aggregate_walk_f(dtrace_hdl_t *,
      dtrace_aggregate_f *, void *);