8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /*
27 * Copyright (c) 2012, 2015 by Delphix. All rights reserved.
28 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
29 */
30
31 /*
32 * Big Theory Statement for the virtual memory allocator.
33 *
34 * For a more complete description of the main ideas, see:
35 *
36 * Jeff Bonwick and Jonathan Adams,
37 *
38 * Magazines and vmem: Extending the Slab Allocator to Many CPUs and
39 * Arbitrary Resources.
40 *
41 * Proceedings of the 2001 Usenix Conference.
42 * Available as http://www.usenix.org/event/usenix01/bonwick.html
43 *
44 * Section 1, below, is also the primary contents of vmem(9). If for some
45 * reason you are updating this comment, you will also wish to update the
46 * manual.
47 *
48 * 1. General Concepts
1728 /*
1729 * Rescale the hash table to keep the hash chains short.
1730 */
1731 vmem_hash_rescale(vmp);
1732 }
1733 mutex_exit(&vmem_list_lock);
1734
1735 (void) timeout(vmem_update, dummy, vmem_update_interval * hz);
1736 }
1737
1738 void
1739 vmem_qcache_reap(vmem_t *vmp)
1740 {
1741 int i;
1742
1743 /*
1744 * Reap any quantum caches that may be part of this vmem.
1745 */
1746 for (i = 0; i < VMEM_NQCACHE_MAX; i++)
1747 if (vmp->vm_qcache[i])
1748 kmem_cache_reap_now(vmp->vm_qcache[i]);
1749 }
1750
1751 /*
1752 * Prepare vmem for use.
1753 */
1754 vmem_t *
1755 vmem_init(const char *heap_name,
1756 void *heap_start, size_t heap_size, size_t heap_quantum,
1757 void *(*heap_alloc)(vmem_t *, size_t, int),
1758 void (*heap_free)(vmem_t *, void *, size_t))
1759 {
1760 uint32_t id;
1761 int nseg = VMEM_SEG_INITIAL;
1762 vmem_t *heap;
1763
1764 while (--nseg >= 0)
1765 vmem_putseg_global(&vmem_seg0[nseg]);
1766
1767 heap = vmem_create(heap_name,
1768 heap_start, heap_size, heap_quantum,
|
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /*
27 * Copyright (c) 2012, 2015 by Delphix. All rights reserved.
28 * Copyright (c) 2017, Joyent, Inc.
29 */
30
31 /*
32 * Big Theory Statement for the virtual memory allocator.
33 *
34 * For a more complete description of the main ideas, see:
35 *
36 * Jeff Bonwick and Jonathan Adams,
37 *
38 * Magazines and vmem: Extending the Slab Allocator to Many CPUs and
39 * Arbitrary Resources.
40 *
41 * Proceedings of the 2001 Usenix Conference.
42 * Available as http://www.usenix.org/event/usenix01/bonwick.html
43 *
44 * Section 1, below, is also the primary contents of vmem(9). If for some
45 * reason you are updating this comment, you will also wish to update the
46 * manual.
47 *
48 * 1. General Concepts
1728 /*
1729 * Rescale the hash table to keep the hash chains short.
1730 */
1731 vmem_hash_rescale(vmp);
1732 }
1733 mutex_exit(&vmem_list_lock);
1734
1735 (void) timeout(vmem_update, dummy, vmem_update_interval * hz);
1736 }
1737
1738 void
1739 vmem_qcache_reap(vmem_t *vmp)
1740 {
1741 int i;
1742
1743 /*
1744 * Reap any quantum caches that may be part of this vmem.
1745 */
1746 for (i = 0; i < VMEM_NQCACHE_MAX; i++)
1747 if (vmp->vm_qcache[i])
1748 kmem_cache_reap_soon(vmp->vm_qcache[i]);
1749 }
1750
1751 /*
1752 * Prepare vmem for use.
1753 */
1754 vmem_t *
1755 vmem_init(const char *heap_name,
1756 void *heap_start, size_t heap_size, size_t heap_quantum,
1757 void *(*heap_alloc)(vmem_t *, size_t, int),
1758 void (*heap_free)(vmem_t *, void *, size_t))
1759 {
1760 uint32_t id;
1761 int nseg = VMEM_SEG_INITIAL;
1762 vmem_t *heap;
1763
1764 while (--nseg >= 0)
1765 vmem_putseg_global(&vmem_seg0[nseg]);
1766
1767 heap = vmem_create(heap_name,
1768 heap_start, heap_size, heap_quantum,
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