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09b414e8 | 1 | #ifndef _SPL_KSTAT_H |
2 | #define _SPL_KSTAT_H | |
f1ca4da6 | 3 | |
4 | #ifdef __cplusplus | |
5 | extern "C" { | |
6 | #endif | |
7 | ||
04a479f7 | 8 | #define DEBUG_KSTAT |
9 | ||
f1b59d26 | 10 | #include <linux/module.h> |
f4b37741 | 11 | #include <sys/types.h> |
12 | #include <sys/time.h> | |
04a479f7 | 13 | #include <sys/kmem.h> |
14 | #include <sys/proc.h> | |
f1ca4da6 | 15 | |
04a479f7 | 16 | #define KSTAT_STRLEN 31 |
f1ca4da6 | 17 | |
04a479f7 | 18 | /* For reference valid classes are: |
19 | * disk, tape, net, controller, vm, kvm, hat, streams, kstat, misc | |
20 | */ | |
f1ca4da6 | 21 | |
04a479f7 | 22 | #define KSTAT_TYPE_RAW 0 /* can be anything; ks_ndata >= 1 */ |
23 | #define KSTAT_TYPE_NAMED 1 /* name/value pair; ks_ndata >= 1 */ | |
24 | #define KSTAT_TYPE_INTR 2 /* interrupt stats; ks_ndata == 1 */ | |
25 | #define KSTAT_TYPE_IO 3 /* I/O stats; ks_ndata == 1 */ | |
26 | #define KSTAT_TYPE_TIMER 4 /* event timer; ks_ndata >= 1 */ | |
f1ca4da6 | 27 | #define KSTAT_NUM_TYPES 5 |
28 | ||
f1ca4da6 | 29 | #define KSTAT_DATA_CHAR 0 |
30 | #define KSTAT_DATA_INT32 1 | |
31 | #define KSTAT_DATA_UINT32 2 | |
32 | #define KSTAT_DATA_INT64 3 | |
33 | #define KSTAT_DATA_UINT64 4 | |
04a479f7 | 34 | #define KSTAT_DATA_LONG 5 |
35 | #define KSTAT_DATA_ULONG 6 | |
36 | #define KSTAT_DATA_STRING 7 | |
37 | #define KSTAT_NUM_DATAS 8 | |
38 | ||
39 | #define KSTAT_INTR_HARD 0 | |
40 | #define KSTAT_INTR_SOFT 1 | |
41 | #define KSTAT_INTR_WATCHDOG 2 | |
42 | #define KSTAT_INTR_SPURIOUS 3 | |
43 | #define KSTAT_INTR_MULTSVC 4 | |
44 | #define KSTAT_NUM_INTRS 5 | |
f1ca4da6 | 45 | |
04a479f7 | 46 | #define KSTAT_FLAG_VIRTUAL 0x01 |
47 | #define KSTAT_FLAG_VAR_SIZE 0x02 | |
48 | #define KSTAT_FLAG_WRITABLE 0x04 | |
49 | #define KSTAT_FLAG_PERSISTENT 0x08 | |
50 | #define KSTAT_FLAG_DORMANT 0x10 | |
51 | #define KSTAT_FLAG_UNSUPPORTED (KSTAT_FLAG_VAR_SIZE | KSTAT_FLAG_WRITABLE | \ | |
52 | KSTAT_FLAG_PERSISTENT | KSTAT_FLAG_DORMANT) | |
f1ca4da6 | 53 | |
f1ca4da6 | 54 | |
04a479f7 | 55 | #define KS_MAGIC 0x9d9d9d9d |
f1ca4da6 | 56 | |
04a479f7 | 57 | typedef int kid_t; /* unique kstat id */ |
f1ca4da6 | 58 | |
59 | typedef struct kstat_s { | |
04a479f7 | 60 | int ks_magic; /* magic value */ |
61 | kid_t ks_kid; /* unique kstat ID */ | |
62 | hrtime_t ks_crtime; /* creation time */ | |
63 | hrtime_t ks_snaptime; /* last access time */ | |
64 | char ks_module[KSTAT_STRLEN+1]; /* provider module name */ | |
65 | int ks_instance; /* provider module instance */ | |
66 | char ks_name[KSTAT_STRLEN+1]; /* kstat name */ | |
67 | char ks_class[KSTAT_STRLEN+1]; /* kstat class */ | |
68 | uchar_t ks_type; /* kstat data type */ | |
69 | uchar_t ks_flags; /* kstat flags */ | |
70 | void *ks_data; /* kstat type-specific data */ | |
71 | uint_t ks_ndata; /* # of type-specific data records */ | |
72 | size_t ks_data_size; /* size of kstat data section */ | |
73 | struct proc_dir_entry *ks_proc; /* proc linkage */ | |
74 | spinlock_t ks_lock; /* kstat data lock */ | |
75 | struct list_head ks_list; /* kstat linkage */ | |
f1ca4da6 | 76 | } kstat_t; |
77 | ||
78 | typedef struct kstat_named_s { | |
04a479f7 | 79 | char name[KSTAT_STRLEN]; /* name of counter */ |
80 | uchar_t data_type; /* data type */ | |
f1ca4da6 | 81 | union { |
04a479f7 | 82 | char c[16]; /* 128-bit int */ |
83 | int32_t i32; /* 32-bit signed int */ | |
84 | uint32_t ui32; /* 32-bit unsigned int */ | |
85 | int64_t i64; /* 64-bit signed int */ | |
86 | uint64_t ui64; /* 64-bit unsigned int */ | |
87 | long l; /* native signed long */ | |
88 | ulong_t ul; /* native unsigned long */ | |
f1ca4da6 | 89 | struct { |
90 | union { | |
04a479f7 | 91 | char *ptr; /* NULL-term string */ |
92 | char __pad[8]; /* 64-bit padding */ | |
f1ca4da6 | 93 | } addr; |
04a479f7 | 94 | uint32_t len; /* # bytes for strlen + '\0' */ |
95 | } string; | |
96 | } value; | |
f1ca4da6 | 97 | } kstat_named_t; |
98 | ||
04a479f7 | 99 | #define KSTAT_NAMED_STR_PTR(knptr) ((knptr)->value.string.addr.ptr) |
100 | #define KSTAT_NAMED_STR_BUFLEN(knptr) ((knptr)->value.string.len) | |
101 | ||
102 | typedef struct kstat_intr { | |
103 | uint_t intrs[KSTAT_NUM_INTRS]; | |
104 | } kstat_intr_t; | |
105 | ||
106 | typedef struct kstat_io { | |
107 | u_longlong_t nread; /* number of bytes read */ | |
108 | u_longlong_t nwritten; /* number of bytes written */ | |
109 | uint_t reads; /* number of read operations */ | |
110 | uint_t writes; /* number of write operations */ | |
111 | hrtime_t wtime; /* cumulative wait (pre-service) time */ | |
112 | hrtime_t wlentime; /* cumulative wait length*time product*/ | |
113 | hrtime_t wlastupdate; /* last time wait queue changed */ | |
114 | hrtime_t rtime; /* cumulative run (service) time */ | |
115 | hrtime_t rlentime; /* cumulative run length*time product */ | |
116 | hrtime_t rlastupdate; /* last time run queue changed */ | |
117 | uint_t wcnt; /* count of elements in wait state */ | |
118 | uint_t rcnt; /* count of elements in run state */ | |
119 | } kstat_io_t; | |
120 | ||
121 | typedef struct kstat_timer { | |
122 | char name[KSTAT_STRLEN+1]; /* event name */ | |
123 | u_longlong_t num_events; /* number of events */ | |
124 | hrtime_t elapsed_time; /* cumulative elapsed time */ | |
125 | hrtime_t min_time; /* shortest event duration */ | |
126 | hrtime_t max_time; /* longest event duration */ | |
127 | hrtime_t start_time; /* previous event start time */ | |
128 | hrtime_t stop_time; /* previous event stop time */ | |
129 | } kstat_timer_t; | |
130 | ||
131 | int kstat_init(void); | |
132 | void kstat_fini(void); | |
133 | ||
134 | #ifdef DEBUG_KSTAT | |
135 | extern kstat_t *__kstat_create(const char *ks_module, int ks_instance, | |
136 | const char *ks_name, const char *ks_class, | |
137 | uchar_t ks_type, uint_t ks_ndata, | |
138 | uchar_t ks_flags); | |
139 | extern void __kstat_install(kstat_t *ksp); | |
140 | extern void __kstat_delete(kstat_t *ksp); | |
141 | ||
142 | #define kstat_create(m,i,n,c,t,s,f) __kstat_create(m,i,n,c,t,s,f) | |
143 | #define kstat_install(k) __kstat_install(k) | |
144 | #define kstat_delete(k) __kstat_delete(k) | |
145 | ||
146 | #else | |
147 | ||
148 | #define kstat_create(m,i,n,c,t,s,f) (NULL) | |
149 | #define kstat_install(k) ((void)0) | |
150 | #define kstat_delete(k) ((void)0) | |
151 | ||
152 | #endif /* DEBUG_KSTAT */ | |
f1ca4da6 | 153 | |
154 | #ifdef __cplusplus | |
155 | } | |
156 | #endif | |
157 | ||
09b414e8 | 158 | #endif /* _SPL_KSTAT_H */ |
f1ca4da6 | 159 |