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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>. | |
715f6251 | 6 | * UCRL-CODE-235197 |
7 | * | |
716154c5 BB |
8 | * This file is part of the SPL, Solaris Porting Layer. |
9 | * For details, see <http://github.com/behlendorf/spl/>. | |
10 | * | |
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. | |
715f6251 | 15 | * |
716154c5 | 16 | * The SPL is distributed in the hope that it will be useful, but WITHOUT |
715f6251 | 17 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
18 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
19 | * for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License along | |
716154c5 BB |
22 | * with the SPL. If not, see <http://www.gnu.org/licenses/>. |
23 | \*****************************************************************************/ | |
715f6251 | 24 | |
09b414e8 | 25 | #ifndef _SPL_KSTAT_H |
26 | #define _SPL_KSTAT_H | |
f1ca4da6 | 27 | |
f1b59d26 | 28 | #include <linux/module.h> |
ae4c36ad | 29 | #include <linux/proc_compat.h> |
f4b37741 | 30 | #include <sys/types.h> |
31 | #include <sys/time.h> | |
04a479f7 | 32 | #include <sys/kmem.h> |
f1ca4da6 | 33 | |
04a479f7 | 34 | #define KSTAT_STRLEN 31 |
f1ca4da6 | 35 | |
04a479f7 | 36 | /* For reference valid classes are: |
37 | * disk, tape, net, controller, vm, kvm, hat, streams, kstat, misc | |
38 | */ | |
f1ca4da6 | 39 | |
04a479f7 | 40 | #define KSTAT_TYPE_RAW 0 /* can be anything; ks_ndata >= 1 */ |
41 | #define KSTAT_TYPE_NAMED 1 /* name/value pair; ks_ndata >= 1 */ | |
42 | #define KSTAT_TYPE_INTR 2 /* interrupt stats; ks_ndata == 1 */ | |
43 | #define KSTAT_TYPE_IO 3 /* I/O stats; ks_ndata == 1 */ | |
44 | #define KSTAT_TYPE_TIMER 4 /* event timer; ks_ndata >= 1 */ | |
f1ca4da6 | 45 | #define KSTAT_NUM_TYPES 5 |
46 | ||
f1ca4da6 | 47 | #define KSTAT_DATA_CHAR 0 |
48 | #define KSTAT_DATA_INT32 1 | |
49 | #define KSTAT_DATA_UINT32 2 | |
50 | #define KSTAT_DATA_INT64 3 | |
51 | #define KSTAT_DATA_UINT64 4 | |
04a479f7 | 52 | #define KSTAT_DATA_LONG 5 |
53 | #define KSTAT_DATA_ULONG 6 | |
54 | #define KSTAT_DATA_STRING 7 | |
55 | #define KSTAT_NUM_DATAS 8 | |
56 | ||
57 | #define KSTAT_INTR_HARD 0 | |
58 | #define KSTAT_INTR_SOFT 1 | |
59 | #define KSTAT_INTR_WATCHDOG 2 | |
60 | #define KSTAT_INTR_SPURIOUS 3 | |
61 | #define KSTAT_INTR_MULTSVC 4 | |
62 | #define KSTAT_NUM_INTRS 5 | |
f1ca4da6 | 63 | |
04a479f7 | 64 | #define KSTAT_FLAG_VIRTUAL 0x01 |
65 | #define KSTAT_FLAG_VAR_SIZE 0x02 | |
66 | #define KSTAT_FLAG_WRITABLE 0x04 | |
67 | #define KSTAT_FLAG_PERSISTENT 0x08 | |
68 | #define KSTAT_FLAG_DORMANT 0x10 | |
69 | #define KSTAT_FLAG_UNSUPPORTED (KSTAT_FLAG_VAR_SIZE | KSTAT_FLAG_WRITABLE | \ | |
70 | KSTAT_FLAG_PERSISTENT | KSTAT_FLAG_DORMANT) | |
f1ca4da6 | 71 | |
f1ca4da6 | 72 | |
04a479f7 | 73 | #define KS_MAGIC 0x9d9d9d9d |
f1ca4da6 | 74 | |
04a479f7 | 75 | typedef int kid_t; /* unique kstat id */ |
f1ca4da6 | 76 | |
77 | typedef struct kstat_s { | |
04a479f7 | 78 | int ks_magic; /* magic value */ |
79 | kid_t ks_kid; /* unique kstat ID */ | |
80 | hrtime_t ks_crtime; /* creation time */ | |
81 | hrtime_t ks_snaptime; /* last access time */ | |
82 | char ks_module[KSTAT_STRLEN+1]; /* provider module name */ | |
83 | int ks_instance; /* provider module instance */ | |
84 | char ks_name[KSTAT_STRLEN+1]; /* kstat name */ | |
85 | char ks_class[KSTAT_STRLEN+1]; /* kstat class */ | |
86 | uchar_t ks_type; /* kstat data type */ | |
87 | uchar_t ks_flags; /* kstat flags */ | |
88 | void *ks_data; /* kstat type-specific data */ | |
89 | uint_t ks_ndata; /* # of type-specific data records */ | |
90 | size_t ks_data_size; /* size of kstat data section */ | |
91 | struct proc_dir_entry *ks_proc; /* proc linkage */ | |
92 | spinlock_t ks_lock; /* kstat data lock */ | |
93 | struct list_head ks_list; /* kstat linkage */ | |
f1ca4da6 | 94 | } kstat_t; |
95 | ||
96 | typedef struct kstat_named_s { | |
04a479f7 | 97 | char name[KSTAT_STRLEN]; /* name of counter */ |
98 | uchar_t data_type; /* data type */ | |
f1ca4da6 | 99 | union { |
04a479f7 | 100 | char c[16]; /* 128-bit int */ |
101 | int32_t i32; /* 32-bit signed int */ | |
102 | uint32_t ui32; /* 32-bit unsigned int */ | |
103 | int64_t i64; /* 64-bit signed int */ | |
104 | uint64_t ui64; /* 64-bit unsigned int */ | |
105 | long l; /* native signed long */ | |
106 | ulong_t ul; /* native unsigned long */ | |
f1ca4da6 | 107 | struct { |
108 | union { | |
04a479f7 | 109 | char *ptr; /* NULL-term string */ |
110 | char __pad[8]; /* 64-bit padding */ | |
f1ca4da6 | 111 | } addr; |
04a479f7 | 112 | uint32_t len; /* # bytes for strlen + '\0' */ |
113 | } string; | |
114 | } value; | |
f1ca4da6 | 115 | } kstat_named_t; |
116 | ||
04a479f7 | 117 | #define KSTAT_NAMED_STR_PTR(knptr) ((knptr)->value.string.addr.ptr) |
118 | #define KSTAT_NAMED_STR_BUFLEN(knptr) ((knptr)->value.string.len) | |
119 | ||
120 | typedef struct kstat_intr { | |
121 | uint_t intrs[KSTAT_NUM_INTRS]; | |
122 | } kstat_intr_t; | |
123 | ||
124 | typedef struct kstat_io { | |
125 | u_longlong_t nread; /* number of bytes read */ | |
126 | u_longlong_t nwritten; /* number of bytes written */ | |
127 | uint_t reads; /* number of read operations */ | |
128 | uint_t writes; /* number of write operations */ | |
129 | hrtime_t wtime; /* cumulative wait (pre-service) time */ | |
130 | hrtime_t wlentime; /* cumulative wait length*time product*/ | |
131 | hrtime_t wlastupdate; /* last time wait queue changed */ | |
132 | hrtime_t rtime; /* cumulative run (service) time */ | |
133 | hrtime_t rlentime; /* cumulative run length*time product */ | |
134 | hrtime_t rlastupdate; /* last time run queue changed */ | |
135 | uint_t wcnt; /* count of elements in wait state */ | |
136 | uint_t rcnt; /* count of elements in run state */ | |
137 | } kstat_io_t; | |
138 | ||
139 | typedef struct kstat_timer { | |
140 | char name[KSTAT_STRLEN+1]; /* event name */ | |
141 | u_longlong_t num_events; /* number of events */ | |
142 | hrtime_t elapsed_time; /* cumulative elapsed time */ | |
143 | hrtime_t min_time; /* shortest event duration */ | |
144 | hrtime_t max_time; /* longest event duration */ | |
145 | hrtime_t start_time; /* previous event start time */ | |
146 | hrtime_t stop_time; /* previous event stop time */ | |
147 | } kstat_timer_t; | |
148 | ||
149 | int kstat_init(void); | |
150 | void kstat_fini(void); | |
151 | ||
04a479f7 | 152 | extern kstat_t *__kstat_create(const char *ks_module, int ks_instance, |
153 | const char *ks_name, const char *ks_class, | |
154 | uchar_t ks_type, uint_t ks_ndata, | |
155 | uchar_t ks_flags); | |
156 | extern void __kstat_install(kstat_t *ksp); | |
157 | extern void __kstat_delete(kstat_t *ksp); | |
158 | ||
159 | #define kstat_create(m,i,n,c,t,s,f) __kstat_create(m,i,n,c,t,s,f) | |
160 | #define kstat_install(k) __kstat_install(k) | |
161 | #define kstat_delete(k) __kstat_delete(k) | |
162 | ||
09b414e8 | 163 | #endif /* _SPL_KSTAT_H */ |