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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 | 8 | * This file is part of the SPL, Solaris Porting Layer. |
3d6af2dd | 9 | * For details, see <http://zfsonlinux.org/>. |
716154c5 BB |
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> |
71c9f0b0 | 33 | #include <sys/mutex.h> |
f1ca4da6 | 34 | |
04a479f7 | 35 | #define KSTAT_STRLEN 31 |
f1ca4da6 | 36 | |
04a479f7 | 37 | /* For reference valid classes are: |
38 | * disk, tape, net, controller, vm, kvm, hat, streams, kstat, misc | |
39 | */ | |
f1ca4da6 | 40 | |
04a479f7 | 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 */ | |
dba79fcb BB |
46 | #define KSTAT_TYPE_TXG 5 /* txg sync; ks_ndata >= 1 */ |
47 | #define KSTAT_NUM_TYPES 6 | |
f1ca4da6 | 48 | |
f1ca4da6 | 49 | #define KSTAT_DATA_CHAR 0 |
50 | #define KSTAT_DATA_INT32 1 | |
51 | #define KSTAT_DATA_UINT32 2 | |
52 | #define KSTAT_DATA_INT64 3 | |
53 | #define KSTAT_DATA_UINT64 4 | |
04a479f7 | 54 | #define KSTAT_DATA_LONG 5 |
55 | #define KSTAT_DATA_ULONG 6 | |
56 | #define KSTAT_DATA_STRING 7 | |
57 | #define KSTAT_NUM_DATAS 8 | |
58 | ||
59 | #define KSTAT_INTR_HARD 0 | |
60 | #define KSTAT_INTR_SOFT 1 | |
61 | #define KSTAT_INTR_WATCHDOG 2 | |
62 | #define KSTAT_INTR_SPURIOUS 3 | |
63 | #define KSTAT_INTR_MULTSVC 4 | |
64 | #define KSTAT_NUM_INTRS 5 | |
f1ca4da6 | 65 | |
04a479f7 | 66 | #define KSTAT_FLAG_VIRTUAL 0x01 |
67 | #define KSTAT_FLAG_VAR_SIZE 0x02 | |
68 | #define KSTAT_FLAG_WRITABLE 0x04 | |
69 | #define KSTAT_FLAG_PERSISTENT 0x08 | |
70 | #define KSTAT_FLAG_DORMANT 0x10 | |
71 | #define KSTAT_FLAG_UNSUPPORTED (KSTAT_FLAG_VAR_SIZE | KSTAT_FLAG_WRITABLE | \ | |
72 | KSTAT_FLAG_PERSISTENT | KSTAT_FLAG_DORMANT) | |
f1ca4da6 | 73 | |
f1ca4da6 | 74 | |
04a479f7 | 75 | #define KS_MAGIC 0x9d9d9d9d |
f1ca4da6 | 76 | |
9a8b7a74 BB |
77 | /* Dynamic updates */ |
78 | #define KSTAT_READ 0 | |
79 | #define KSTAT_WRITE 1 | |
80 | ||
81 | struct kstat_s; | |
82 | ||
83 | typedef int kid_t; /* unique kstat id */ | |
84 | typedef int kstat_update_t(struct kstat_s *, int); /* dynamic update cb */ | |
f1ca4da6 | 85 | |
86 | typedef struct kstat_s { | |
04a479f7 | 87 | int ks_magic; /* magic value */ |
88 | kid_t ks_kid; /* unique kstat ID */ | |
89 | hrtime_t ks_crtime; /* creation time */ | |
90 | hrtime_t ks_snaptime; /* last access time */ | |
91 | char ks_module[KSTAT_STRLEN+1]; /* provider module name */ | |
92 | int ks_instance; /* provider module instance */ | |
93 | char ks_name[KSTAT_STRLEN+1]; /* kstat name */ | |
94 | char ks_class[KSTAT_STRLEN+1]; /* kstat class */ | |
95 | uchar_t ks_type; /* kstat data type */ | |
96 | uchar_t ks_flags; /* kstat flags */ | |
97 | void *ks_data; /* kstat type-specific data */ | |
98 | uint_t ks_ndata; /* # of type-specific data records */ | |
99 | size_t ks_data_size; /* size of kstat data section */ | |
100 | struct proc_dir_entry *ks_proc; /* proc linkage */ | |
9a8b7a74 BB |
101 | kstat_update_t *ks_update; /* dynamic updates */ |
102 | void *ks_private; /* private data */ | |
71c9f0b0 | 103 | kmutex_t ks_lock; /* kstat data lock */ |
04a479f7 | 104 | struct list_head ks_list; /* kstat linkage */ |
f1ca4da6 | 105 | } kstat_t; |
106 | ||
107 | typedef struct kstat_named_s { | |
04a479f7 | 108 | char name[KSTAT_STRLEN]; /* name of counter */ |
109 | uchar_t data_type; /* data type */ | |
f1ca4da6 | 110 | union { |
04a479f7 | 111 | char c[16]; /* 128-bit int */ |
112 | int32_t i32; /* 32-bit signed int */ | |
113 | uint32_t ui32; /* 32-bit unsigned int */ | |
114 | int64_t i64; /* 64-bit signed int */ | |
115 | uint64_t ui64; /* 64-bit unsigned int */ | |
116 | long l; /* native signed long */ | |
117 | ulong_t ul; /* native unsigned long */ | |
f1ca4da6 | 118 | struct { |
119 | union { | |
04a479f7 | 120 | char *ptr; /* NULL-term string */ |
121 | char __pad[8]; /* 64-bit padding */ | |
f1ca4da6 | 122 | } addr; |
04a479f7 | 123 | uint32_t len; /* # bytes for strlen + '\0' */ |
124 | } string; | |
125 | } value; | |
f1ca4da6 | 126 | } kstat_named_t; |
127 | ||
04a479f7 | 128 | #define KSTAT_NAMED_STR_PTR(knptr) ((knptr)->value.string.addr.ptr) |
129 | #define KSTAT_NAMED_STR_BUFLEN(knptr) ((knptr)->value.string.len) | |
130 | ||
131 | typedef struct kstat_intr { | |
132 | uint_t intrs[KSTAT_NUM_INTRS]; | |
133 | } kstat_intr_t; | |
134 | ||
135 | typedef struct kstat_io { | |
136 | u_longlong_t nread; /* number of bytes read */ | |
137 | u_longlong_t nwritten; /* number of bytes written */ | |
138 | uint_t reads; /* number of read operations */ | |
139 | uint_t writes; /* number of write operations */ | |
140 | hrtime_t wtime; /* cumulative wait (pre-service) time */ | |
141 | hrtime_t wlentime; /* cumulative wait length*time product*/ | |
142 | hrtime_t wlastupdate; /* last time wait queue changed */ | |
143 | hrtime_t rtime; /* cumulative run (service) time */ | |
144 | hrtime_t rlentime; /* cumulative run length*time product */ | |
145 | hrtime_t rlastupdate; /* last time run queue changed */ | |
146 | uint_t wcnt; /* count of elements in wait state */ | |
147 | uint_t rcnt; /* count of elements in run state */ | |
148 | } kstat_io_t; | |
149 | ||
150 | typedef struct kstat_timer { | |
151 | char name[KSTAT_STRLEN+1]; /* event name */ | |
152 | u_longlong_t num_events; /* number of events */ | |
153 | hrtime_t elapsed_time; /* cumulative elapsed time */ | |
154 | hrtime_t min_time; /* shortest event duration */ | |
155 | hrtime_t max_time; /* longest event duration */ | |
156 | hrtime_t start_time; /* previous event start time */ | |
157 | hrtime_t stop_time; /* previous event stop time */ | |
158 | } kstat_timer_t; | |
159 | ||
dba79fcb BB |
160 | typedef enum kstat_txg_state { |
161 | TXG_STATE_OPEN = 1, | |
162 | TXG_STATE_QUIESCING = 2, | |
163 | TXG_STATE_SYNCING = 3, | |
164 | TXG_STATE_COMMITTED = 4, | |
165 | } kstat_txg_state_t; | |
166 | ||
167 | typedef struct kstat_txg { | |
168 | u_longlong_t txg; /* txg id */ | |
169 | kstat_txg_state_t state; /* txg state */ | |
170 | hrtime_t birth; /* birth time stamp */ | |
171 | u_longlong_t nread; /* number of bytes read */ | |
172 | u_longlong_t nwritten; /* number of bytes written */ | |
173 | uint_t reads; /* number of read operations */ | |
174 | uint_t writes; /* number of write operations */ | |
175 | hrtime_t open_time; /* open time */ | |
176 | hrtime_t quiesce_time;/* quiesce time */ | |
177 | hrtime_t sync_time; /* sync time */ | |
178 | } kstat_txg_t; | |
179 | ||
1114ae6a BB |
180 | int spl_kstat_init(void); |
181 | void spl_kstat_fini(void); | |
04a479f7 | 182 | |
04a479f7 | 183 | extern kstat_t *__kstat_create(const char *ks_module, int ks_instance, |
184 | const char *ks_name, const char *ks_class, | |
185 | uchar_t ks_type, uint_t ks_ndata, | |
186 | uchar_t ks_flags); | |
187 | extern void __kstat_install(kstat_t *ksp); | |
188 | extern void __kstat_delete(kstat_t *ksp); | |
189 | ||
190 | #define kstat_create(m,i,n,c,t,s,f) __kstat_create(m,i,n,c,t,s,f) | |
191 | #define kstat_install(k) __kstat_install(k) | |
192 | #define kstat_delete(k) __kstat_delete(k) | |
193 | ||
09b414e8 | 194 | #endif /* _SPL_KSTAT_H */ |