sys/dev/raidframe/rf_hist.h

   1 /*      $NetBSD: rf_hist.h,v 1.3 1999/02/05 00:06:12 oster Exp $        */
   2 /*
   3  * rf_hist.h
   4  *
   5  * Histgram operations for RAIDframe stats
   6  */
   7 /*
   8  * Copyright (c) 1995 Carnegie-Mellon University.
   9  * All rights reserved.
  10  *
  11  * Author: Jim Zelenka
  12  *
  13  * Permission to use, copy, modify and distribute this software and
  14  * its documentation is hereby granted, provided that both the copyright
  15  * notice and this permission notice appear in all copies of the
  16  * software, derivative works or modified versions, and any portions
  17  * thereof, and that both notices appear in supporting documentation.
  18  *
  19  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  20  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  21  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  22  *
  23  * Carnegie Mellon requests users of this software to return to
  24  *
  25  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  26  *  School of Computer Science
  27  *  Carnegie Mellon University
  28  *  Pittsburgh PA 15213-3890
  29  *
  30  * any improvements or extensions that they make and grant Carnegie the
  31  * rights to redistribute these changes.
  32  */
  33
  34 #ifndef _RF__RF_HIST_H_
  35 #define _RF__RF_HIST_H_
  36
  37 #include <dev/raidframe/raidframevar.h>
  38
  39 #define RF_HIST_RESOLUTION   5
  40 #define RF_HIST_MIN_VAL      0
  41 #define RF_HIST_MAX_VAL      1000
  42 #define RF_HIST_RANGE        (RF_HIST_MAX_VAL - RF_HIST_MIN_VAL)
  43 #define RF_HIST_NUM_BUCKETS  (RF_HIST_RANGE / RF_HIST_RESOLUTION + 1)
  44
  45 typedef RF_uint32 RF_Hist_t;
  46
  47 #define RF_HIST_ADD(_hist_,_val_) { \
  48         RF_Hist_t val; \
  49         val = ((RF_Hist_t)(_val_)) / 1000; \
  50         if (val >= RF_HIST_MAX_VAL) \
  51                 _hist_[RF_HIST_NUM_BUCKETS-1]++; \
  52         else \
  53                 _hist_[(val - RF_HIST_MIN_VAL) / RF_HIST_RESOLUTION]++; \
  54 }
  55
  56 #endif                          /* !_RF__RF_HIST_H_ */