e39756439c
It was not discussed and should probably not happen. Requested by: msmith and others
225 lines
7.1 KiB
C
225 lines
7.1 KiB
C
/*
|
|
* Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _DEVICESTAT_H
|
|
#define _DEVICESTAT_H
|
|
|
|
#include <sys/queue.h>
|
|
#include <sys/time.h>
|
|
|
|
#define DEVSTAT_NAME_LEN 16
|
|
|
|
/*
|
|
* ATTENTION: The devstat version below should be incremented any time a
|
|
* change is made in struct devstat, or any time a change is made in the
|
|
* enumerated types that struct devstat uses. (Only if those changes
|
|
* would require a recompile -- i.e. re-arranging the order of an
|
|
* enumerated type or something like that.) This version number is used by
|
|
* userland utilities to determine whether or not they are in sync with the
|
|
* kernel.
|
|
*/
|
|
#define DEVSTAT_VERSION 4
|
|
|
|
/*
|
|
* These flags specify which statistics features are supported or not
|
|
* supported by a particular device. The default is all statistics are
|
|
* supported.
|
|
*/
|
|
typedef enum {
|
|
DEVSTAT_ALL_SUPPORTED = 0x00,
|
|
DEVSTAT_NO_BLOCKSIZE = 0x01,
|
|
DEVSTAT_NO_ORDERED_TAGS = 0x02,
|
|
DEVSTAT_BS_UNAVAILABLE = 0x04
|
|
} devstat_support_flags;
|
|
|
|
typedef enum {
|
|
DEVSTAT_NO_DATA = 0x00,
|
|
DEVSTAT_READ = 0x01,
|
|
DEVSTAT_WRITE = 0x02,
|
|
DEVSTAT_FREE = 0x03
|
|
} devstat_trans_flags;
|
|
|
|
typedef enum {
|
|
DEVSTAT_TAG_SIMPLE = 0x00,
|
|
DEVSTAT_TAG_HEAD = 0x01,
|
|
DEVSTAT_TAG_ORDERED = 0x02,
|
|
DEVSTAT_TAG_NONE = 0x03
|
|
} devstat_tag_type;
|
|
|
|
typedef enum {
|
|
DEVSTAT_PRIORITY_MIN = 0x000,
|
|
DEVSTAT_PRIORITY_OTHER = 0x020,
|
|
DEVSTAT_PRIORITY_PASS = 0x030,
|
|
DEVSTAT_PRIORITY_FD = 0x040,
|
|
DEVSTAT_PRIORITY_WFD = 0x050,
|
|
DEVSTAT_PRIORITY_TAPE = 0x060,
|
|
DEVSTAT_PRIORITY_CD = 0x090,
|
|
DEVSTAT_PRIORITY_DISK = 0x110,
|
|
DEVSTAT_PRIORITY_ARRAY = 0x120,
|
|
DEVSTAT_PRIORITY_MAX = 0xfff
|
|
} devstat_priority;
|
|
|
|
/*
|
|
* These types are intended to aid statistics gathering/display programs.
|
|
* The first 13 types (up to the 'target' flag) are identical numerically
|
|
* to the SCSI device type numbers. The next 3 types designate the device
|
|
* interface. Currently the choices are IDE, SCSI, and 'other'. The last
|
|
* flag specifies whether or not the given device is a passthrough device
|
|
* or not. If it is a passthrough device, the lower 4 bits specify which
|
|
* type of physical device lies under the passthrough device, and the next
|
|
* 4 bits specify the interface.
|
|
*/
|
|
typedef enum {
|
|
DEVSTAT_TYPE_DIRECT = 0x000,
|
|
DEVSTAT_TYPE_SEQUENTIAL = 0x001,
|
|
DEVSTAT_TYPE_PRINTER = 0x002,
|
|
DEVSTAT_TYPE_PROCESSOR = 0x003,
|
|
DEVSTAT_TYPE_WORM = 0x004,
|
|
DEVSTAT_TYPE_CDROM = 0x005,
|
|
DEVSTAT_TYPE_SCANNER = 0x006,
|
|
DEVSTAT_TYPE_OPTICAL = 0x007,
|
|
DEVSTAT_TYPE_CHANGER = 0x008,
|
|
DEVSTAT_TYPE_COMM = 0x009,
|
|
DEVSTAT_TYPE_ASC0 = 0x00a,
|
|
DEVSTAT_TYPE_ASC1 = 0x00b,
|
|
DEVSTAT_TYPE_STORARRAY = 0x00c,
|
|
DEVSTAT_TYPE_ENCLOSURE = 0x00d,
|
|
DEVSTAT_TYPE_FLOPPY = 0x00e,
|
|
DEVSTAT_TYPE_MASK = 0x00f,
|
|
DEVSTAT_TYPE_IF_SCSI = 0x010,
|
|
DEVSTAT_TYPE_IF_IDE = 0x020,
|
|
DEVSTAT_TYPE_IF_OTHER = 0x030,
|
|
DEVSTAT_TYPE_IF_MASK = 0x0f0,
|
|
DEVSTAT_TYPE_PASS = 0x100
|
|
} devstat_type_flags;
|
|
|
|
struct devstat {
|
|
STAILQ_ENTRY(devstat) dev_links;
|
|
u_int32_t device_number; /*
|
|
* Devstat device
|
|
* number.
|
|
*/
|
|
char device_name[DEVSTAT_NAME_LEN];
|
|
int unit_number;
|
|
u_int64_t bytes_read; /*
|
|
* Total bytes read
|
|
* from a device.
|
|
*/
|
|
u_int64_t bytes_written; /*
|
|
* Total bytes written
|
|
* to a device.
|
|
*/
|
|
u_int64_t bytes_freed; /*
|
|
* Total bytes freed
|
|
* from a device.
|
|
*/
|
|
u_int64_t num_reads; /*
|
|
* Total number of
|
|
* read requests to
|
|
* the device.
|
|
*/
|
|
u_int64_t num_writes; /*
|
|
* Total number of
|
|
* write requests to
|
|
* the device.
|
|
*/
|
|
u_int64_t num_frees; /*
|
|
* Total number of
|
|
* free requests to
|
|
* the device.
|
|
*/
|
|
u_int64_t num_other; /*
|
|
* Total number of
|
|
* transactions that
|
|
* don't read or write
|
|
* data.
|
|
*/
|
|
int32_t busy_count; /*
|
|
* Total number of
|
|
* transactions
|
|
* outstanding for
|
|
* the device.
|
|
*/
|
|
u_int32_t block_size; /* Block size, bytes */
|
|
u_int64_t tag_types[3]; /*
|
|
* The number of
|
|
* simple, ordered,
|
|
* and head of queue
|
|
* tags sent.
|
|
*/
|
|
struct timeval dev_creation_time; /*
|
|
* Time the device was
|
|
* created.
|
|
*/
|
|
struct timeval busy_time; /*
|
|
* Total amount of
|
|
* time drive has spent
|
|
* processing requests.
|
|
*/
|
|
struct timeval start_time; /*
|
|
* The time when
|
|
* busy_count was
|
|
* last == 0. Or, the
|
|
* start of the latest
|
|
* busy period.
|
|
*/
|
|
struct timeval last_comp_time; /*
|
|
* Last time a
|
|
* transaction was
|
|
* completed.
|
|
*/
|
|
|
|
devstat_support_flags flags; /*
|
|
* Which statistics
|
|
* are supported by a
|
|
* given device.
|
|
*/
|
|
devstat_type_flags device_type; /* Device type */
|
|
devstat_priority priority; /* Controls list pos. */
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
struct bio;
|
|
|
|
void devstat_add_entry(struct devstat *ds, const char *dev_name,
|
|
int unit_number, u_int32_t block_size,
|
|
devstat_support_flags flags,
|
|
devstat_type_flags device_type,
|
|
devstat_priority priority);
|
|
void devstat_remove_entry(struct devstat *ds);
|
|
void devstat_start_transaction(struct devstat *ds);
|
|
void devstat_end_transaction(struct devstat *ds, u_int32_t bytes,
|
|
devstat_tag_type tag_type,
|
|
devstat_trans_flags flags);
|
|
void devstat_end_transaction_bio(struct devstat *ds, struct bio *bp);
|
|
#endif
|
|
|
|
#endif /* _DEVICESTAT_H */
|