diff options
Diffstat (limited to 'sys/dev/raidframe/rf_hist.h')
| -rw-r--r-- | sys/dev/raidframe/rf_hist.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_hist.h b/sys/dev/raidframe/rf_hist.h new file mode 100644 index 0000000..b8b12c3 --- /dev/null +++ b/sys/dev/raidframe/rf_hist.h @@ -0,0 +1,57 @@ +/* $FreeBSD$ */ +/* $NetBSD: rf_hist.h,v 1.3 1999/02/05 00:06:12 oster Exp $ */ +/* + * rf_hist.h + * + * Histgram operations for RAIDframe stats + */ +/* + * Copyright (c) 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Jim Zelenka + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#ifndef _RF__RF_HIST_H_ +#define _RF__RF_HIST_H_ + +#include <dev/raidframe/rf_types.h> + +#define RF_HIST_RESOLUTION 5 +#define RF_HIST_MIN_VAL 0 +#define RF_HIST_MAX_VAL 1000 +#define RF_HIST_RANGE (RF_HIST_MAX_VAL - RF_HIST_MIN_VAL) +#define RF_HIST_NUM_BUCKETS (RF_HIST_RANGE / RF_HIST_RESOLUTION + 1) + +typedef RF_uint32 RF_Hist_t; + +#define RF_HIST_ADD(_hist_,_val_) { \ + RF_Hist_t val; \ + val = ((RF_Hist_t)(_val_)) / 1000; \ + if (val >= RF_HIST_MAX_VAL) \ + _hist_[RF_HIST_NUM_BUCKETS-1]++; \ + else \ + _hist_[(val - RF_HIST_MIN_VAL) / RF_HIST_RESOLUTION]++; \ +} + +#endif /* !_RF__RF_HIST_H_ */ |
