| /* |
| * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. |
| * Copyright (C) 2007 The Regents of the University of California. |
| * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). |
| * Written by Brian Behlendorf <behlendorf1@llnl.gov>. |
| * UCRL-CODE-235197 |
| * |
| * This file is part of the SPL, Solaris Porting Layer. |
| * For details, see <http://zfsonlinux.org/>. |
| * |
| * The SPL is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| * The SPL is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with the SPL. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #ifndef _SPL_KSTAT_H |
| #define _SPL_KSTAT_H |
| |
| #include <linux/module.h> |
| #include <sys/types.h> |
| #include <sys/time.h> |
| #include <sys/kmem.h> |
| #include <sys/mutex.h> |
| #include <sys/proc.h> |
| |
| #define KSTAT_STRLEN 255 |
| #define KSTAT_RAW_MAX (128*1024) |
| |
| /* |
| * For reference valid classes are: |
| * disk, tape, net, controller, vm, kvm, hat, streams, kstat, misc |
| */ |
| |
| #define KSTAT_TYPE_RAW 0 /* can be anything; ks_ndata >= 1 */ |
| #define KSTAT_TYPE_NAMED 1 /* name/value pair; ks_ndata >= 1 */ |
| #define KSTAT_TYPE_INTR 2 /* interrupt stats; ks_ndata == 1 */ |
| #define KSTAT_TYPE_IO 3 /* I/O stats; ks_ndata == 1 */ |
| #define KSTAT_TYPE_TIMER 4 /* event timer; ks_ndata >= 1 */ |
| #define KSTAT_NUM_TYPES 5 |
| |
| #define KSTAT_DATA_CHAR 0 |
| #define KSTAT_DATA_INT32 1 |
| #define KSTAT_DATA_UINT32 2 |
| #define KSTAT_DATA_INT64 3 |
| #define KSTAT_DATA_UINT64 4 |
| #define KSTAT_DATA_LONG 5 |
| #define KSTAT_DATA_ULONG 6 |
| #define KSTAT_DATA_STRING 7 |
| #define KSTAT_NUM_DATAS 8 |
| |
| #define KSTAT_INTR_HARD 0 |
| #define KSTAT_INTR_SOFT 1 |
| #define KSTAT_INTR_WATCHDOG 2 |
| #define KSTAT_INTR_SPURIOUS 3 |
| #define KSTAT_INTR_MULTSVC 4 |
| #define KSTAT_NUM_INTRS 5 |
| |
| #define KSTAT_FLAG_VIRTUAL 0x01 |
| #define KSTAT_FLAG_VAR_SIZE 0x02 |
| #define KSTAT_FLAG_WRITABLE 0x04 |
| #define KSTAT_FLAG_PERSISTENT 0x08 |
| #define KSTAT_FLAG_DORMANT 0x10 |
| #define KSTAT_FLAG_INVALID 0x20 |
| #define KSTAT_FLAG_LONGSTRINGS 0x40 |
| #define KSTAT_FLAG_NO_HEADERS 0x80 |
| |
| #define KS_MAGIC 0x9d9d9d9d |
| |
| /* Dynamic updates */ |
| #define KSTAT_READ 0 |
| #define KSTAT_WRITE 1 |
| |
| struct kstat_s; |
| typedef struct kstat_s kstat_t; |
| |
| typedef int kid_t; /* unique kstat id */ |
| typedef int kstat_update_t(struct kstat_s *, int); /* dynamic update cb */ |
| |
| typedef struct kstat_module { |
| char ksm_name[KSTAT_STRLEN+1]; /* module name */ |
| struct list_head ksm_module_list; /* module linkage */ |
| struct list_head ksm_kstat_list; /* list of kstat entries */ |
| struct proc_dir_entry *ksm_proc; /* proc entry */ |
| } kstat_module_t; |
| |
| typedef struct kstat_raw_ops { |
| int (*headers)(char *buf, size_t size); |
| int (*data)(char *buf, size_t size, void *data); |
| void *(*addr)(kstat_t *ksp, loff_t index); |
| } kstat_raw_ops_t; |
| |
| typedef struct kstat_proc_entry { |
| char kpe_name[KSTAT_STRLEN+1]; /* kstat name */ |
| char kpe_module[KSTAT_STRLEN+1]; /* provider module name */ |
| kstat_module_t *kpe_owner; /* kstat module linkage */ |
| struct list_head kpe_list; /* kstat linkage */ |
| struct proc_dir_entry *kpe_proc; /* procfs entry */ |
| } kstat_proc_entry_t; |
| |
| struct kstat_s { |
| int ks_magic; /* magic value */ |
| kid_t ks_kid; /* unique kstat ID */ |
| hrtime_t ks_crtime; /* creation time */ |
| hrtime_t ks_snaptime; /* last access time */ |
| int ks_instance; /* provider module instance */ |
| char ks_class[KSTAT_STRLEN+1]; /* kstat class */ |
| uchar_t ks_type; /* kstat data type */ |
| uchar_t ks_flags; /* kstat flags */ |
| void *ks_data; /* kstat type-specific data */ |
| uint_t ks_ndata; /* # of data records */ |
| size_t ks_data_size; /* size of kstat data section */ |
| kstat_update_t *ks_update; /* dynamic updates */ |
| void *ks_private; /* private data */ |
| kmutex_t ks_private_lock; /* kstat private data lock */ |
| kmutex_t *ks_lock; /* kstat data lock */ |
| kstat_raw_ops_t ks_raw_ops; /* ops table for raw type */ |
| char *ks_raw_buf; /* buf used for raw ops */ |
| size_t ks_raw_bufsize; /* size of raw ops buffer */ |
| kstat_proc_entry_t ks_proc; /* data for procfs entry */ |
| }; |
| |
| typedef struct kstat_named_s { |
| char name[KSTAT_STRLEN]; /* name of counter */ |
| uchar_t data_type; /* data type */ |
| union { |
| char c[16]; /* 128-bit int */ |
| int32_t i32; /* 32-bit signed int */ |
| uint32_t ui32; /* 32-bit unsigned int */ |
| int64_t i64; /* 64-bit signed int */ |
| uint64_t ui64; /* 64-bit unsigned int */ |
| long l; /* native signed long */ |
| ulong_t ul; /* native unsigned long */ |
| struct { |
| union { |
| char *ptr; /* NULL-term string */ |
| char __pad[8]; /* 64-bit padding */ |
| } addr; |
| uint32_t len; /* # bytes for strlen + '\0' */ |
| } string; |
| } value; |
| } kstat_named_t; |
| |
| #define KSTAT_NAMED_STR_PTR(knptr) ((knptr)->value.string.addr.ptr) |
| #define KSTAT_NAMED_STR_BUFLEN(knptr) ((knptr)->value.string.len) |
| |
| #ifdef HAVE_PROC_OPS_STRUCT |
| typedef struct proc_ops kstat_proc_op_t; |
| #else |
| typedef struct file_operations kstat_proc_op_t; |
| #endif |
| |
| typedef struct kstat_intr { |
| uint_t intrs[KSTAT_NUM_INTRS]; |
| } kstat_intr_t; |
| |
| typedef struct kstat_io { |
| u_longlong_t nread; /* number of bytes read */ |
| u_longlong_t nwritten; /* number of bytes written */ |
| uint_t reads; /* number of read operations */ |
| uint_t writes; /* number of write operations */ |
| hrtime_t wtime; /* cumulative wait (pre-service) time */ |
| hrtime_t wlentime; /* cumulative wait len*time product */ |
| hrtime_t wlastupdate; /* last time wait queue changed */ |
| hrtime_t rtime; /* cumulative run (service) time */ |
| hrtime_t rlentime; /* cumulative run length*time product */ |
| hrtime_t rlastupdate; /* last time run queue changed */ |
| uint_t wcnt; /* count of elements in wait state */ |
| uint_t rcnt; /* count of elements in run state */ |
| } kstat_io_t; |
| |
| typedef struct kstat_timer { |
| char name[KSTAT_STRLEN+1]; /* event name */ |
| u_longlong_t num_events; /* number of events */ |
| hrtime_t elapsed_time; /* cumulative elapsed time */ |
| hrtime_t min_time; /* shortest event duration */ |
| hrtime_t max_time; /* longest event duration */ |
| hrtime_t start_time; /* previous event start time */ |
| hrtime_t stop_time; /* previous event stop time */ |
| } kstat_timer_t; |
| |
| int spl_kstat_init(void); |
| void spl_kstat_fini(void); |
| |
| extern void __kstat_set_raw_ops(kstat_t *ksp, |
| int (*headers)(char *buf, size_t size), |
| int (*data)(char *buf, size_t size, void *data), |
| void* (*addr)(kstat_t *ksp, loff_t index)); |
| |
| extern kstat_t *__kstat_create(const char *ks_module, int ks_instance, |
| const char *ks_name, const char *ks_class, uchar_t ks_type, |
| uint_t ks_ndata, uchar_t ks_flags); |
| |
| extern void kstat_proc_entry_init(kstat_proc_entry_t *kpep, |
| const char *module, const char *name); |
| extern void kstat_proc_entry_delete(kstat_proc_entry_t *kpep); |
| extern void kstat_proc_entry_install(kstat_proc_entry_t *kpep, mode_t mode, |
| const kstat_proc_op_t *file_ops, void *data); |
| |
| extern void __kstat_install(kstat_t *ksp); |
| extern void __kstat_delete(kstat_t *ksp); |
| extern void kstat_waitq_enter(kstat_io_t *); |
| extern void kstat_waitq_exit(kstat_io_t *); |
| extern void kstat_runq_enter(kstat_io_t *); |
| extern void kstat_runq_exit(kstat_io_t *); |
| |
| #define kstat_set_raw_ops(k, h, d, a) \ |
| __kstat_set_raw_ops(k, h, d, a) |
| #define kstat_create(m, i, n, c, t, s, f) \ |
| __kstat_create(m, i, n, c, t, s, f) |
| |
| #define kstat_install(k) __kstat_install(k) |
| #define kstat_delete(k) __kstat_delete(k) |
| |
| #endif /* _SPL_KSTAT_H */ |