109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
|
/* $NetBSD: iostat.h,v 1.10 2009/04/04 07:30:09 ad Exp $ */
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 1996, 1997, 2004, 2009 The NetBSD Foundation, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
||
|
|
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
||
|
|
* NASA Ames Research Center.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _SYS_IOSTAT_H_
|
||
|
|
#define _SYS_IOSTAT_H_
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Disk device structures.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/time.h>
|
||
|
|
#include <sys/queue.h>
|
||
|
|
|
||
|
|
#define IOSTATNAMELEN 16
|
||
|
|
|
||
|
|
/* types of drives we can have */
|
||
|
|
#define IOSTAT_DISK 0
|
||
|
|
#define IOSTAT_TAPE 1
|
||
|
|
#define IOSTAT_NFS 2
|
||
|
|
|
||
|
|
/* The following structure is 64-bit alignment safe */
|
||
|
|
struct io_sysctl {
|
||
|
|
char name[IOSTATNAMELEN];
|
||
|
|
int32_t busy;
|
||
|
|
int32_t type;
|
||
|
|
u_int64_t xfer;
|
||
|
|
u_int64_t seek;
|
||
|
|
u_int64_t bytes;
|
||
|
|
u_int32_t attachtime_sec;
|
||
|
|
u_int32_t attachtime_usec;
|
||
|
|
u_int32_t timestamp_sec;
|
||
|
|
u_int32_t timestamp_usec;
|
||
|
|
u_int32_t time_sec;
|
||
|
|
u_int32_t time_usec;
|
||
|
|
/* New separate read/write stats */
|
||
|
|
u_int64_t rxfer;
|
||
|
|
u_int64_t rbytes;
|
||
|
|
u_int64_t wxfer;
|
||
|
|
u_int64_t wbytes;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Structure for keeping the in-kernel drive stats - these are linked
|
||
|
|
* together in drivelist.
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct io_stats {
|
||
|
|
char io_name[IOSTATNAMELEN]; /* device name */
|
||
|
|
void *io_parent; /* pointer to what we are attached to */
|
||
|
|
int io_type; /* type of device the state belong to */
|
||
|
|
int io_busy; /* busy counter */
|
||
|
|
u_int64_t io_rxfer; /* total number of read transfers */
|
||
|
|
u_int64_t io_wxfer; /* total number of write transfers */
|
||
|
|
u_int64_t io_seek; /* total independent seek operations */
|
||
|
|
u_int64_t io_rbytes; /* total bytes read */
|
||
|
|
u_int64_t io_wbytes; /* total bytes written */
|
||
|
|
struct timeval io_attachtime; /* time disk was attached */
|
||
|
|
struct timeval io_timestamp; /* timestamp of last unbusy */
|
||
|
|
struct timeval io_time; /* total time spent busy */
|
||
|
|
TAILQ_ENTRY(io_stats) io_link;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* drivelist_head is defined here so that user-land has access to it.
|
||
|
|
*/
|
||
|
|
TAILQ_HEAD(iostatlist_head, io_stats); /* the iostatlist is a TAILQ */
|
||
|
|
|
||
|
|
#ifdef _KERNEL
|
||
|
|
void iostat_init(void);
|
||
|
|
void iostat_busy(struct io_stats *);
|
||
|
|
void iostat_unbusy(struct io_stats *, long, int);
|
||
|
|
bool iostat_isbusy(struct io_stats *);
|
||
|
|
struct io_stats *iostat_find(const char *);
|
||
|
|
struct io_stats *iostat_alloc(int32_t, void *, const char *);
|
||
|
|
void iostat_free(struct io_stats *);
|
||
|
|
void iostat_seek(struct io_stats *);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _SYS_IOSTAT_H_ */
|