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055ffd98cf
Cleanup the --enable-debug-* configure options, this has been pending for quite some time and I am glad I finally got to it. To summerize: 1) All SPL_AC_DEBUG_* macros were updated to be a more autoconf friendly. This mainly involved shift to the GNU approved usage of AC_ARG_ENABLE and ensuring AS_IF is used rather than directly using an if [ test ] construct. 2) --enable-debug-kmem=yes by default. This simply enabled keeping a running tally of total memory allocated and freed and reporting a memory leak if there was one at module unload. Additionally, it ensure /proc/spl/kmem/slab will exist by default which is handy. The overhead is low for this and it should not impact performance. 3) --enable-debug-kmem-tracking=no by default. This option was added to provide a configure option to enable to detailed memory allocation tracking. This support was always there but you had to know where to turn it on. By default this support is disabled because it is known to badly hurt performence, however it is invaluable when chasing a memory leak. 4) --enable-debug-kstat removed. After further reflection I can't see why you would ever really want to turn this support off. It is now always on which had the nice side effect of simplifying the proc handling code in spl-proc.c. We can now always assume the top level directory will be there. 5) --enable-debug-callb removed. This never really did anything, it was put in provisionally because it might have been needed. It turns out it was not so I am just removing it to prevent confusion.
167 lines
7.1 KiB
C
167 lines
7.1 KiB
C
/*
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* This file is part of the SPL: Solaris Porting Layer.
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*
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* Copyright (c) 2008 Lawrence Livermore National Security, LLC.
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* Produced at Lawrence Livermore National Laboratory
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* Written by:
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* Brian Behlendorf <behlendorf1@llnl.gov>,
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* Herb Wartens <wartens2@llnl.gov>,
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* Jim Garlick <garlick@llnl.gov>
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* UCRL-CODE-235197
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _SPL_KSTAT_H
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#define _SPL_KSTAT_H
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#include <linux/module.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/kmem.h>
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#include <sys/proc.h>
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#define KSTAT_STRLEN 31
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/* For reference valid classes are:
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* disk, tape, net, controller, vm, kvm, hat, streams, kstat, misc
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*/
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#define KSTAT_TYPE_RAW 0 /* can be anything; ks_ndata >= 1 */
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#define KSTAT_TYPE_NAMED 1 /* name/value pair; ks_ndata >= 1 */
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#define KSTAT_TYPE_INTR 2 /* interrupt stats; ks_ndata == 1 */
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#define KSTAT_TYPE_IO 3 /* I/O stats; ks_ndata == 1 */
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#define KSTAT_TYPE_TIMER 4 /* event timer; ks_ndata >= 1 */
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#define KSTAT_NUM_TYPES 5
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#define KSTAT_DATA_CHAR 0
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#define KSTAT_DATA_INT32 1
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#define KSTAT_DATA_UINT32 2
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#define KSTAT_DATA_INT64 3
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#define KSTAT_DATA_UINT64 4
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#define KSTAT_DATA_LONG 5
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#define KSTAT_DATA_ULONG 6
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#define KSTAT_DATA_STRING 7
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#define KSTAT_NUM_DATAS 8
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#define KSTAT_INTR_HARD 0
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#define KSTAT_INTR_SOFT 1
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#define KSTAT_INTR_WATCHDOG 2
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#define KSTAT_INTR_SPURIOUS 3
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#define KSTAT_INTR_MULTSVC 4
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#define KSTAT_NUM_INTRS 5
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#define KSTAT_FLAG_VIRTUAL 0x01
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#define KSTAT_FLAG_VAR_SIZE 0x02
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#define KSTAT_FLAG_WRITABLE 0x04
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#define KSTAT_FLAG_PERSISTENT 0x08
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#define KSTAT_FLAG_DORMANT 0x10
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#define KSTAT_FLAG_UNSUPPORTED (KSTAT_FLAG_VAR_SIZE | KSTAT_FLAG_WRITABLE | \
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KSTAT_FLAG_PERSISTENT | KSTAT_FLAG_DORMANT)
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#define KS_MAGIC 0x9d9d9d9d
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typedef int kid_t; /* unique kstat id */
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typedef struct kstat_s {
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int ks_magic; /* magic value */
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kid_t ks_kid; /* unique kstat ID */
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hrtime_t ks_crtime; /* creation time */
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hrtime_t ks_snaptime; /* last access time */
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char ks_module[KSTAT_STRLEN+1]; /* provider module name */
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int ks_instance; /* provider module instance */
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char ks_name[KSTAT_STRLEN+1]; /* kstat name */
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char ks_class[KSTAT_STRLEN+1]; /* kstat class */
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uchar_t ks_type; /* kstat data type */
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uchar_t ks_flags; /* kstat flags */
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void *ks_data; /* kstat type-specific data */
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uint_t ks_ndata; /* # of type-specific data records */
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size_t ks_data_size; /* size of kstat data section */
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struct proc_dir_entry *ks_proc; /* proc linkage */
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spinlock_t ks_lock; /* kstat data lock */
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struct list_head ks_list; /* kstat linkage */
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} kstat_t;
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typedef struct kstat_named_s {
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char name[KSTAT_STRLEN]; /* name of counter */
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uchar_t data_type; /* data type */
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union {
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char c[16]; /* 128-bit int */
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int32_t i32; /* 32-bit signed int */
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uint32_t ui32; /* 32-bit unsigned int */
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int64_t i64; /* 64-bit signed int */
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uint64_t ui64; /* 64-bit unsigned int */
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long l; /* native signed long */
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ulong_t ul; /* native unsigned long */
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struct {
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union {
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char *ptr; /* NULL-term string */
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char __pad[8]; /* 64-bit padding */
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} addr;
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uint32_t len; /* # bytes for strlen + '\0' */
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} string;
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} value;
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} kstat_named_t;
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#define KSTAT_NAMED_STR_PTR(knptr) ((knptr)->value.string.addr.ptr)
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#define KSTAT_NAMED_STR_BUFLEN(knptr) ((knptr)->value.string.len)
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typedef struct kstat_intr {
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uint_t intrs[KSTAT_NUM_INTRS];
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} kstat_intr_t;
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typedef struct kstat_io {
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u_longlong_t nread; /* number of bytes read */
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u_longlong_t nwritten; /* number of bytes written */
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uint_t reads; /* number of read operations */
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uint_t writes; /* number of write operations */
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hrtime_t wtime; /* cumulative wait (pre-service) time */
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hrtime_t wlentime; /* cumulative wait length*time product*/
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hrtime_t wlastupdate; /* last time wait queue changed */
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hrtime_t rtime; /* cumulative run (service) time */
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hrtime_t rlentime; /* cumulative run length*time product */
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hrtime_t rlastupdate; /* last time run queue changed */
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uint_t wcnt; /* count of elements in wait state */
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uint_t rcnt; /* count of elements in run state */
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} kstat_io_t;
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typedef struct kstat_timer {
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char name[KSTAT_STRLEN+1]; /* event name */
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u_longlong_t num_events; /* number of events */
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hrtime_t elapsed_time; /* cumulative elapsed time */
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hrtime_t min_time; /* shortest event duration */
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hrtime_t max_time; /* longest event duration */
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hrtime_t start_time; /* previous event start time */
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hrtime_t stop_time; /* previous event stop time */
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} kstat_timer_t;
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int kstat_init(void);
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void kstat_fini(void);
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extern kstat_t *__kstat_create(const char *ks_module, int ks_instance,
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const char *ks_name, const char *ks_class,
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uchar_t ks_type, uint_t ks_ndata,
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uchar_t ks_flags);
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extern void __kstat_install(kstat_t *ksp);
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extern void __kstat_delete(kstat_t *ksp);
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#define kstat_create(m,i,n,c,t,s,f) __kstat_create(m,i,n,c,t,s,f)
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#define kstat_install(k) __kstat_install(k)
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#define kstat_delete(k) __kstat_delete(k)
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#endif /* _SPL_KSTAT_H */
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