10b9d77bf1
Few new things available from now on: - Data deduplication. - Triple parity RAIDZ (RAIDZ3). - zfs diff. - zpool split. - Snapshot holds. - zpool import -F. Allows to rewind corrupted pool to earlier transaction group. - Possibility to import pool in read-only mode. MFC after: 1 month
280 lines
6.2 KiB
C
280 lines
6.2 KiB
C
/*-
|
|
* Copyright (c) 2006-2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/kmem.h>
|
|
#include <sys/debug.h>
|
|
#include <sys/mutex.h>
|
|
|
|
#include <vm/vm_page.h>
|
|
#include <vm/vm_object.h>
|
|
#include <vm/vm_kern.h>
|
|
#include <vm/vm_map.h>
|
|
|
|
#ifdef KMEM_DEBUG
|
|
#include <sys/queue.h>
|
|
#include <sys/stack.h>
|
|
#endif
|
|
|
|
#ifdef _KERNEL
|
|
MALLOC_DEFINE(M_SOLARIS, "solaris", "Solaris");
|
|
#else
|
|
#define malloc(size, type, flags) malloc(size)
|
|
#define free(addr, type) free(addr)
|
|
#endif
|
|
|
|
#ifdef KMEM_DEBUG
|
|
struct kmem_item {
|
|
struct stack stack;
|
|
LIST_ENTRY(kmem_item) next;
|
|
};
|
|
static LIST_HEAD(, kmem_item) kmem_items;
|
|
static struct mtx kmem_items_mtx;
|
|
MTX_SYSINIT(kmem_items_mtx, &kmem_items_mtx, "kmem_items", MTX_DEF);
|
|
#endif /* KMEM_DEBUG */
|
|
|
|
void *
|
|
zfs_kmem_alloc(size_t size, int kmflags)
|
|
{
|
|
void *p;
|
|
#ifdef KMEM_DEBUG
|
|
struct kmem_item *i;
|
|
|
|
size += sizeof(struct kmem_item);
|
|
#endif
|
|
p = malloc(size, M_SOLARIS, kmflags);
|
|
#ifndef _KERNEL
|
|
if (kmflags & KM_SLEEP)
|
|
assert(p != NULL);
|
|
#endif
|
|
#ifdef KMEM_DEBUG
|
|
if (p != NULL) {
|
|
i = p;
|
|
p = (u_char *)p + sizeof(struct kmem_item);
|
|
stack_save(&i->stack);
|
|
mtx_lock(&kmem_items_mtx);
|
|
LIST_INSERT_HEAD(&kmem_items, i, next);
|
|
mtx_unlock(&kmem_items_mtx);
|
|
}
|
|
#endif
|
|
return (p);
|
|
}
|
|
|
|
void
|
|
zfs_kmem_free(void *buf, size_t size __unused)
|
|
{
|
|
#ifdef KMEM_DEBUG
|
|
if (buf == NULL) {
|
|
printf("%s: attempt to free NULL\n", __func__);
|
|
return;
|
|
}
|
|
struct kmem_item *i;
|
|
|
|
buf = (u_char *)buf - sizeof(struct kmem_item);
|
|
mtx_lock(&kmem_items_mtx);
|
|
LIST_FOREACH(i, &kmem_items, next) {
|
|
if (i == buf)
|
|
break;
|
|
}
|
|
ASSERT(i != NULL);
|
|
LIST_REMOVE(i, next);
|
|
mtx_unlock(&kmem_items_mtx);
|
|
#endif
|
|
free(buf, M_SOLARIS);
|
|
}
|
|
|
|
static uint64_t kmem_size_val;
|
|
|
|
static void
|
|
kmem_size_init(void *unused __unused)
|
|
{
|
|
|
|
kmem_size_val = (uint64_t)cnt.v_page_count * PAGE_SIZE;
|
|
if (kmem_size_val > vm_kmem_size)
|
|
kmem_size_val = vm_kmem_size;
|
|
}
|
|
SYSINIT(kmem_size_init, SI_SUB_KMEM, SI_ORDER_ANY, kmem_size_init, NULL);
|
|
|
|
uint64_t
|
|
kmem_size(void)
|
|
{
|
|
|
|
return (kmem_size_val);
|
|
}
|
|
|
|
uint64_t
|
|
kmem_used(void)
|
|
{
|
|
|
|
return (kmem_map->size);
|
|
}
|
|
|
|
static int
|
|
kmem_std_constructor(void *mem, int size __unused, void *private, int flags)
|
|
{
|
|
struct kmem_cache *cache = private;
|
|
|
|
return (cache->kc_constructor(mem, cache->kc_private, flags));
|
|
}
|
|
|
|
static void
|
|
kmem_std_destructor(void *mem, int size __unused, void *private)
|
|
{
|
|
struct kmem_cache *cache = private;
|
|
|
|
cache->kc_destructor(mem, cache->kc_private);
|
|
}
|
|
|
|
kmem_cache_t *
|
|
kmem_cache_create(char *name, size_t bufsize, size_t align,
|
|
int (*constructor)(void *, void *, int), void (*destructor)(void *, void *),
|
|
void (*reclaim)(void *) __unused, void *private, vmem_t *vmp, int cflags)
|
|
{
|
|
kmem_cache_t *cache;
|
|
|
|
ASSERT(vmp == NULL);
|
|
|
|
cache = kmem_alloc(sizeof(*cache), KM_SLEEP);
|
|
strlcpy(cache->kc_name, name, sizeof(cache->kc_name));
|
|
cache->kc_constructor = constructor;
|
|
cache->kc_destructor = destructor;
|
|
cache->kc_private = private;
|
|
#if defined(_KERNEL) && !defined(KMEM_DEBUG)
|
|
cache->kc_zone = uma_zcreate(cache->kc_name, bufsize,
|
|
constructor != NULL ? kmem_std_constructor : NULL,
|
|
destructor != NULL ? kmem_std_destructor : NULL,
|
|
NULL, NULL, align > 0 ? align - 1 : 0, cflags);
|
|
#else
|
|
cache->kc_size = bufsize;
|
|
#endif
|
|
|
|
return (cache);
|
|
}
|
|
|
|
void
|
|
kmem_cache_destroy(kmem_cache_t *cache)
|
|
{
|
|
#if defined(_KERNEL) && !defined(KMEM_DEBUG)
|
|
uma_zdestroy(cache->kc_zone);
|
|
#endif
|
|
kmem_free(cache, sizeof(*cache));
|
|
}
|
|
|
|
void *
|
|
kmem_cache_alloc(kmem_cache_t *cache, int flags)
|
|
{
|
|
#if defined(_KERNEL) && !defined(KMEM_DEBUG)
|
|
return (uma_zalloc_arg(cache->kc_zone, cache, flags));
|
|
#else
|
|
void *p;
|
|
|
|
p = kmem_alloc(cache->kc_size, flags);
|
|
if (p != NULL && cache->kc_constructor != NULL)
|
|
kmem_std_constructor(p, cache->kc_size, cache, flags);
|
|
return (p);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
kmem_cache_free(kmem_cache_t *cache, void *buf)
|
|
{
|
|
#if defined(_KERNEL) && !defined(KMEM_DEBUG)
|
|
uma_zfree_arg(cache->kc_zone, buf, cache);
|
|
#else
|
|
if (cache->kc_destructor != NULL)
|
|
kmem_std_destructor(buf, cache->kc_size, cache);
|
|
kmem_free(buf, cache->kc_size);
|
|
#endif
|
|
}
|
|
|
|
#ifdef _KERNEL
|
|
void
|
|
kmem_cache_reap_now(kmem_cache_t *cache)
|
|
{
|
|
#ifndef KMEM_DEBUG
|
|
zone_drain(cache->kc_zone);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
kmem_reap(void)
|
|
{
|
|
uma_reclaim();
|
|
}
|
|
#else
|
|
void
|
|
kmem_cache_reap_now(kmem_cache_t *cache __unused)
|
|
{
|
|
}
|
|
|
|
void
|
|
kmem_reap(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
int
|
|
kmem_debugging(void)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
void *
|
|
calloc(size_t n, size_t s)
|
|
{
|
|
return (kmem_zalloc(n * s, KM_NOSLEEP));
|
|
}
|
|
|
|
#ifdef KMEM_DEBUG
|
|
void kmem_show(void *);
|
|
void
|
|
kmem_show(void *dummy __unused)
|
|
{
|
|
struct kmem_item *i;
|
|
|
|
mtx_lock(&kmem_items_mtx);
|
|
if (LIST_EMPTY(&kmem_items))
|
|
printf("KMEM_DEBUG: No leaked elements.\n");
|
|
else {
|
|
printf("KMEM_DEBUG: Leaked elements:\n\n");
|
|
LIST_FOREACH(i, &kmem_items, next) {
|
|
printf("address=%p\n", i);
|
|
stack_print_ddb(&i->stack);
|
|
printf("\n");
|
|
}
|
|
}
|
|
mtx_unlock(&kmem_items_mtx);
|
|
}
|
|
|
|
SYSUNINIT(sol_kmem, SI_SUB_CPU, SI_ORDER_FIRST, kmem_show, NULL);
|
|
#endif /* KMEM_DEBUG */
|