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OS-5192 need faster clock_gettime
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Joshua M. Clulow <jmc@joyent.com>
Reviewed by: Ryan Zezeski <ryan@zinascii.com>
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--- old/usr/src/uts/common/vm/seg_kmem.h
+++ new/usr/src/uts/common/vm/seg_kmem.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
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14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 + * Copyright 2016 Joyent, Inc.
24 25 */
25 26
26 27 #ifndef _VM_SEG_KMEM_H
27 28 #define _VM_SEG_KMEM_H
28 29
29 30
30 31 #ifdef __cplusplus
31 32 extern "C" {
32 33 #endif
33 34
34 35 #include <sys/types.h>
35 36 #include <sys/vnode.h>
36 37 #include <sys/vmem.h>
37 38 #include <vm/as.h>
38 39 #include <vm/seg.h>
39 40 #include <vm/page.h>
40 41
41 42 /*
42 43 * VM - Kernel Segment Driver
43 44 */
44 45
45 46 #if defined(_KERNEL)
46 47
47 48 extern char *kernelheap; /* start of primary kernel heap */
48 49 extern char *ekernelheap; /* end of primary kernel heap */
49 50 extern char *heap_lp_base; /* start of kernel large page heap arena */
50 51 extern char *heap_lp_end; /* end of kernel large page heap arena */
51 52 extern struct seg kvseg; /* primary kernel heap segment */
52 53 extern struct seg kvseg_core; /* "core" kernel heap segment */
53 54 extern struct seg kzioseg; /* Segment for zio mappings */
54 55 extern vmem_t *heap_lp_arena; /* kernel large page heap arena */
55 56 extern vmem_t *heap_arena; /* primary kernel heap arena */
56 57 extern vmem_t *hat_memload_arena; /* HAT translation arena */
57 58 extern struct seg kvseg32; /* 32-bit kernel heap segment */
58 59 extern vmem_t *heap32_arena; /* 32-bit kernel heap arena */
59 60 extern vmem_t *heaptext_arena; /* kernel text arena, from heap */
60 61 extern struct as kas; /* kernel address space */
61 62 extern int segkmem_reloc; /* enable/disable segkmem relocatable pages */
62 63 extern vmem_t *static_arena; /* arena for caches to import static memory */
63 64 extern vmem_t *static_alloc_arena; /* arena for allocating static memory */
64 65 extern vmem_t *zio_arena; /* arena for zio caches */
65 66 extern vmem_t *zio_alloc_arena; /* arena for zio caches */
66 67 extern struct vnode kvps[];
67 68 /*
68 69 * segkmem page vnodes
69 70 */
70 71 #define kvp (kvps[KV_KVP])
71 72 #define zvp (kvps[KV_ZVP])
72 73 #if defined(__sparc)
73 74 #define mpvp (kvps[KV_MPVP])
74 75 #define promvp (kvps[KV_PROMVP])
75 76 #endif /* __sparc */
76 77
77 78 extern int segkmem_create(struct seg *);
78 79 extern page_t *segkmem_page_create(void *, size_t, int, void *);
79 80 extern void *segkmem_xalloc(vmem_t *, void *, size_t, int, uint_t,
80 81 page_t *(*page_create_func)(void *, size_t, int, void *), void *);
81 82 extern void *segkmem_alloc(vmem_t *, size_t, int);
82 83 extern void *segkmem_alloc_permanent(vmem_t *, size_t, int);
83 84 extern void segkmem_free(vmem_t *, void *, size_t);
84 85 extern void segkmem_xfree(vmem_t *, void *, size_t, void (*)(page_t *));
85 86
86 87 extern void *boot_alloc(void *, size_t, uint_t);
87 88 extern void boot_mapin(caddr_t addr, size_t size);
88 89 extern void kernelheap_init(void *, void *, char *, void *, void *);
89 90 extern void segkmem_gc(void);
90 91
91 92 extern void *segkmem_zio_alloc(vmem_t *, size_t, int);
92 93 extern int segkmem_zio_create(struct seg *);
93 94 extern void segkmem_zio_free(vmem_t *, void *, size_t);
94 95 extern void segkmem_zio_init(void *, size_t);
95 96
96 97 /*
97 98 * Flags for segkmem_xalloc().
98 99 *
99 100 * SEGKMEM_SHARELOCKED requests pages which are locked SE_SHARED to be
100 101 * returned rather than unlocked which is now the default. Note that
101 102 * memory returned by SEGKMEM_SHARELOCKED cannot be freed by segkmem_free().
102 103 * This is a hack for seg_dev that should be cleaned up in the future.
103 104 */
104 105 #define SEGKMEM_SHARELOCKED 0x20000
105 106
106 107 /*
107 108 * Large page for kmem caches support
108 109 */
109 110 typedef struct segkmem_lpcb {
110 111 kmutex_t lp_lock;
111 112 kcondvar_t lp_cv;
112 113 uint_t lp_wait;
113 114 uint_t lp_uselp;
114 115 ulong_t lp_throttle;
115 116
116 117 /* stats */
117 118 uint64_t sleep_allocs_failed;
118 119 uint64_t nosleep_allocs_failed;
119 120 uint64_t allocs_throttled;
120 121 uint64_t allocs_limited;
121 122 uint64_t alloc_bytes_failed;
122 123 } segkmem_lpcb_t;
123 124
124 125 extern void *segkmem_alloc_lp(vmem_t *, size_t *, size_t, int);
125 126 extern void segkmem_free_lp(vmem_t *, void *, size_t);
126 127 extern int segkmem_lpsetup();
127 128 extern void segkmem_heap_lp_init(void);
128 129
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129 130 extern size_t segkmem_lpsize;
130 131 extern int segkmem_lpszc;
131 132 extern size_t segkmem_heaplp_quantum;
132 133 extern size_t segkmem_kmemlp_max;
133 134
134 135 #define SEGKMEM_USE_LARGEPAGES (segkmem_lpsize > PAGESIZE)
135 136
136 137 #define IS_KMEM_VA_LARGEPAGE(vaddr) \
137 138 (((vaddr) >= heap_lp_base) && ((vaddr) < heap_lp_end))
138 139
140 +extern struct seg_ops segkmem_ops;
141 +
139 142 #endif /* _KERNEL */
140 143
141 144 #ifdef __cplusplus
142 145 }
143 146 #endif
144 147
145 148 #endif /* _VM_SEG_KMEM_H */
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