1 | /* $NetBSD: rf_hist.h,v 1.4 2001/10/04 15:58:53 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_ */ |
57 | |