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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; if not, write to the | |
18 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | * Boston, MA 021110-1307, USA | |
20 | * | |
21 | * GPL HEADER END | |
22 | */ | |
23 | /* | |
24 | * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. | |
25 | * Copyright (c) 2012, Intel Corporation. | |
26 | */ | |
27 | /* | |
28 | * This file is part of Lustre, http://www.lustre.org/ | |
29 | * Lustre is a trademark of Sun Microsystems, Inc. | |
30 | * | |
31 | * Please see comments in libcfs/include/libcfs/libcfs_cpu.h for introduction | |
32 | * | |
33 | * Author: liang@whamcloud.com | |
34 | */ | |
35 | ||
d7e09d03 PT |
36 | #define DEBUG_SUBSYSTEM S_LNET |
37 | ||
9fdaf8c0 | 38 | #include "../../include/linux/libcfs/libcfs.h" |
d7e09d03 PT |
39 | |
40 | /** Global CPU partition table */ | |
41 | struct cfs_cpt_table *cfs_cpt_table __read_mostly = NULL; | |
42 | EXPORT_SYMBOL(cfs_cpt_table); | |
43 | ||
44 | #ifndef HAVE_LIBCFS_CPT | |
45 | ||
46 | #define CFS_CPU_VERSION_MAGIC 0xbabecafe | |
47 | ||
48 | struct cfs_cpt_table * | |
49 | cfs_cpt_table_alloc(unsigned int ncpt) | |
50 | { | |
51 | struct cfs_cpt_table *cptab; | |
52 | ||
53 | if (ncpt != 1) { | |
54 | CERROR("Can't support cpu partition number %d\n", ncpt); | |
55 | return NULL; | |
56 | } | |
57 | ||
58 | LIBCFS_ALLOC(cptab, sizeof(*cptab)); | |
59 | if (cptab != NULL) { | |
60 | cptab->ctb_version = CFS_CPU_VERSION_MAGIC; | |
61 | cptab->ctb_nparts = ncpt; | |
62 | } | |
63 | ||
64 | return cptab; | |
65 | } | |
66 | EXPORT_SYMBOL(cfs_cpt_table_alloc); | |
67 | ||
68 | void | |
69 | cfs_cpt_table_free(struct cfs_cpt_table *cptab) | |
70 | { | |
71 | LASSERT(cptab->ctb_version == CFS_CPU_VERSION_MAGIC); | |
72 | ||
73 | LIBCFS_FREE(cptab, sizeof(*cptab)); | |
74 | } | |
75 | EXPORT_SYMBOL(cfs_cpt_table_free); | |
76 | ||
dab3aad3 | 77 | #ifdef CONFIG_SMP |
5426ba66 LX |
78 | int |
79 | cfs_cpt_table_print(struct cfs_cpt_table *cptab, char *buf, int len) | |
80 | { | |
81 | int rc = 0; | |
82 | ||
83 | rc = snprintf(buf, len, "%d\t: %d\n", 0, 0); | |
84 | len -= rc; | |
85 | if (len <= 0) | |
86 | return -EFBIG; | |
87 | ||
88 | return rc; | |
89 | } | |
90 | EXPORT_SYMBOL(cfs_cpt_table_print); | |
dab3aad3 | 91 | #endif /* CONFIG_SMP */ |
5426ba66 | 92 | |
d7e09d03 PT |
93 | int |
94 | cfs_cpt_number(struct cfs_cpt_table *cptab) | |
95 | { | |
96 | return 1; | |
97 | } | |
98 | EXPORT_SYMBOL(cfs_cpt_number); | |
99 | ||
100 | int | |
101 | cfs_cpt_weight(struct cfs_cpt_table *cptab, int cpt) | |
102 | { | |
103 | return 1; | |
104 | } | |
105 | EXPORT_SYMBOL(cfs_cpt_weight); | |
106 | ||
107 | int | |
108 | cfs_cpt_online(struct cfs_cpt_table *cptab, int cpt) | |
109 | { | |
110 | return 1; | |
111 | } | |
112 | EXPORT_SYMBOL(cfs_cpt_online); | |
113 | ||
114 | int | |
115 | cfs_cpt_set_cpu(struct cfs_cpt_table *cptab, int cpt, int cpu) | |
116 | { | |
117 | return 1; | |
118 | } | |
119 | EXPORT_SYMBOL(cfs_cpt_set_cpu); | |
120 | ||
121 | void | |
122 | cfs_cpt_unset_cpu(struct cfs_cpt_table *cptab, int cpt, int cpu) | |
123 | { | |
124 | } | |
125 | EXPORT_SYMBOL(cfs_cpt_unset_cpu); | |
126 | ||
127 | int | |
128 | cfs_cpt_set_cpumask(struct cfs_cpt_table *cptab, int cpt, cpumask_t *mask) | |
129 | { | |
130 | return 1; | |
131 | } | |
132 | EXPORT_SYMBOL(cfs_cpt_set_cpumask); | |
133 | ||
134 | void | |
135 | cfs_cpt_unset_cpumask(struct cfs_cpt_table *cptab, int cpt, cpumask_t *mask) | |
136 | { | |
137 | } | |
138 | EXPORT_SYMBOL(cfs_cpt_unset_cpumask); | |
139 | ||
140 | int | |
141 | cfs_cpt_set_node(struct cfs_cpt_table *cptab, int cpt, int node) | |
142 | { | |
143 | return 1; | |
144 | } | |
145 | EXPORT_SYMBOL(cfs_cpt_set_node); | |
146 | ||
147 | void | |
148 | cfs_cpt_unset_node(struct cfs_cpt_table *cptab, int cpt, int node) | |
149 | { | |
150 | } | |
151 | EXPORT_SYMBOL(cfs_cpt_unset_node); | |
152 | ||
153 | int | |
154 | cfs_cpt_set_nodemask(struct cfs_cpt_table *cptab, int cpt, nodemask_t *mask) | |
155 | { | |
156 | return 1; | |
157 | } | |
158 | EXPORT_SYMBOL(cfs_cpt_set_nodemask); | |
159 | ||
160 | void | |
161 | cfs_cpt_unset_nodemask(struct cfs_cpt_table *cptab, int cpt, nodemask_t *mask) | |
162 | { | |
163 | } | |
164 | EXPORT_SYMBOL(cfs_cpt_unset_nodemask); | |
165 | ||
166 | void | |
167 | cfs_cpt_clear(struct cfs_cpt_table *cptab, int cpt) | |
168 | { | |
169 | } | |
170 | EXPORT_SYMBOL(cfs_cpt_clear); | |
171 | ||
172 | int | |
173 | cfs_cpt_spread_node(struct cfs_cpt_table *cptab, int cpt) | |
174 | { | |
175 | return 0; | |
176 | } | |
177 | EXPORT_SYMBOL(cfs_cpt_spread_node); | |
178 | ||
5426ba66 LX |
179 | int |
180 | cfs_cpu_ht_nsiblings(int cpu) | |
181 | { | |
182 | return 1; | |
183 | } | |
184 | EXPORT_SYMBOL(cfs_cpu_ht_nsiblings); | |
185 | ||
d7e09d03 PT |
186 | int |
187 | cfs_cpt_current(struct cfs_cpt_table *cptab, int remap) | |
188 | { | |
189 | return 0; | |
190 | } | |
191 | EXPORT_SYMBOL(cfs_cpt_current); | |
192 | ||
193 | int | |
194 | cfs_cpt_of_cpu(struct cfs_cpt_table *cptab, int cpu) | |
195 | { | |
196 | return 0; | |
197 | } | |
198 | EXPORT_SYMBOL(cfs_cpt_of_cpu); | |
199 | ||
200 | int | |
201 | cfs_cpt_bind(struct cfs_cpt_table *cptab, int cpt) | |
202 | { | |
203 | return 0; | |
204 | } | |
205 | EXPORT_SYMBOL(cfs_cpt_bind); | |
206 | ||
207 | void | |
208 | cfs_cpu_fini(void) | |
209 | { | |
210 | if (cfs_cpt_table != NULL) { | |
211 | cfs_cpt_table_free(cfs_cpt_table); | |
212 | cfs_cpt_table = NULL; | |
213 | } | |
214 | } | |
215 | ||
216 | int | |
217 | cfs_cpu_init(void) | |
218 | { | |
219 | cfs_cpt_table = cfs_cpt_table_alloc(1); | |
220 | ||
221 | return cfs_cpt_table != NULL ? 0 : -1; | |
222 | } | |
223 | ||
224 | #endif /* HAVE_LIBCFS_CPT */ |