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1 /*****************************************************************************\
2 * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
3 * Copyright (C) 2007 The Regents of the University of California.
4 * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
5 * Written by Brian Behlendorf <behlendorf1@llnl.gov>.
8 * This file is part of the SPL, Solaris Porting Layer.
9 * For details, see <http://github.com/behlendorf/spl/>.
11 * The SPL is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
16 * The SPL is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 * You should have received a copy of the GNU General Public License along
22 * with the SPL. If not, see <http://www.gnu.org/licenses/>.
23 \*****************************************************************************/
28 #include <linux/module.h>
29 #include <linux/proc_compat.h>
30 #include <sys/types.h>
33 #include <sys/mutex.h>
35 #define KSTAT_STRLEN 31
37 /* For reference valid classes are:
38 * disk, tape, net, controller, vm, kvm, hat, streams, kstat, misc
41 #define KSTAT_TYPE_RAW 0 /* can be anything; ks_ndata >= 1 */
42 #define KSTAT_TYPE_NAMED 1 /* name/value pair; ks_ndata >= 1 */
43 #define KSTAT_TYPE_INTR 2 /* interrupt stats; ks_ndata == 1 */
44 #define KSTAT_TYPE_IO 3 /* I/O stats; ks_ndata == 1 */
45 #define KSTAT_TYPE_TIMER 4 /* event timer; ks_ndata >= 1 */
46 #define KSTAT_NUM_TYPES 5
48 #define KSTAT_DATA_CHAR 0
49 #define KSTAT_DATA_INT32 1
50 #define KSTAT_DATA_UINT32 2
51 #define KSTAT_DATA_INT64 3
52 #define KSTAT_DATA_UINT64 4
53 #define KSTAT_DATA_LONG 5
54 #define KSTAT_DATA_ULONG 6
55 #define KSTAT_DATA_STRING 7
56 #define KSTAT_NUM_DATAS 8
58 #define KSTAT_INTR_HARD 0
59 #define KSTAT_INTR_SOFT 1
60 #define KSTAT_INTR_WATCHDOG 2
61 #define KSTAT_INTR_SPURIOUS 3
62 #define KSTAT_INTR_MULTSVC 4
63 #define KSTAT_NUM_INTRS 5
65 #define KSTAT_FLAG_VIRTUAL 0x01
66 #define KSTAT_FLAG_VAR_SIZE 0x02
67 #define KSTAT_FLAG_WRITABLE 0x04
68 #define KSTAT_FLAG_PERSISTENT 0x08
69 #define KSTAT_FLAG_DORMANT 0x10
70 #define KSTAT_FLAG_UNSUPPORTED (KSTAT_FLAG_VAR_SIZE | KSTAT_FLAG_WRITABLE | \
71 KSTAT_FLAG_PERSISTENT | KSTAT_FLAG_DORMANT)
74 #define KS_MAGIC 0x9d9d9d9d
82 typedef int kid_t
; /* unique kstat id */
83 typedef int kstat_update_t(struct kstat_s
*, int); /* dynamic update cb */
85 typedef struct kstat_s
{
86 int ks_magic
; /* magic value */
87 kid_t ks_kid
; /* unique kstat ID */
88 hrtime_t ks_crtime
; /* creation time */
89 hrtime_t ks_snaptime
; /* last access time */
90 char ks_module
[KSTAT_STRLEN
+1]; /* provider module name */
91 int ks_instance
; /* provider module instance */
92 char ks_name
[KSTAT_STRLEN
+1]; /* kstat name */
93 char ks_class
[KSTAT_STRLEN
+1]; /* kstat class */
94 uchar_t ks_type
; /* kstat data type */
95 uchar_t ks_flags
; /* kstat flags */
96 void *ks_data
; /* kstat type-specific data */
97 uint_t ks_ndata
; /* # of type-specific data records */
98 size_t ks_data_size
; /* size of kstat data section */
99 struct proc_dir_entry
*ks_proc
; /* proc linkage */
100 kstat_update_t
*ks_update
; /* dynamic updates */
101 void *ks_private
; /* private data */
102 kmutex_t ks_lock
; /* kstat data lock */
103 struct list_head ks_list
; /* kstat linkage */
106 typedef struct kstat_named_s
{
107 char name
[KSTAT_STRLEN
]; /* name of counter */
108 uchar_t data_type
; /* data type */
110 char c
[16]; /* 128-bit int */
111 int32_t i32
; /* 32-bit signed int */
112 uint32_t ui32
; /* 32-bit unsigned int */
113 int64_t i64
; /* 64-bit signed int */
114 uint64_t ui64
; /* 64-bit unsigned int */
115 long l
; /* native signed long */
116 ulong_t ul
; /* native unsigned long */
119 char *ptr
; /* NULL-term string */
120 char __pad
[8]; /* 64-bit padding */
122 uint32_t len
; /* # bytes for strlen + '\0' */
127 #define KSTAT_NAMED_STR_PTR(knptr) ((knptr)->value.string.addr.ptr)
128 #define KSTAT_NAMED_STR_BUFLEN(knptr) ((knptr)->value.string.len)
130 typedef struct kstat_intr
{
131 uint_t intrs
[KSTAT_NUM_INTRS
];
134 typedef struct kstat_io
{
135 u_longlong_t nread
; /* number of bytes read */
136 u_longlong_t nwritten
; /* number of bytes written */
137 uint_t reads
; /* number of read operations */
138 uint_t writes
; /* number of write operations */
139 hrtime_t wtime
; /* cumulative wait (pre-service) time */
140 hrtime_t wlentime
; /* cumulative wait length*time product*/
141 hrtime_t wlastupdate
; /* last time wait queue changed */
142 hrtime_t rtime
; /* cumulative run (service) time */
143 hrtime_t rlentime
; /* cumulative run length*time product */
144 hrtime_t rlastupdate
; /* last time run queue changed */
145 uint_t wcnt
; /* count of elements in wait state */
146 uint_t rcnt
; /* count of elements in run state */
149 typedef struct kstat_timer
{
150 char name
[KSTAT_STRLEN
+1]; /* event name */
151 u_longlong_t num_events
; /* number of events */
152 hrtime_t elapsed_time
; /* cumulative elapsed time */
153 hrtime_t min_time
; /* shortest event duration */
154 hrtime_t max_time
; /* longest event duration */
155 hrtime_t start_time
; /* previous event start time */
156 hrtime_t stop_time
; /* previous event stop time */
159 int spl_kstat_init(void);
160 void spl_kstat_fini(void);
162 extern kstat_t
*__kstat_create(const char *ks_module
, int ks_instance
,
163 const char *ks_name
, const char *ks_class
,
164 uchar_t ks_type
, uint_t ks_ndata
,
166 extern void __kstat_install(kstat_t
*ksp
);
167 extern void __kstat_delete(kstat_t
*ksp
);
169 #define kstat_create(m,i,n,c,t,s,f) __kstat_create(m,i,n,c,t,s,f)
170 #define kstat_install(k) __kstat_install(k)
171 #define kstat_delete(k) __kstat_delete(k)
173 #endif /* _SPL_KSTAT_H */