4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
24 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
25 * Copyright (c) 2012, 2013, Intel Corporation.
28 * This file is part of Lustre, http://www.lustre.org/
29 * Lustre is a trademark of Sun Microsystems, Inc.
31 * Please see comments in libcfs/include/libcfs/libcfs_cpu.h for introduction
33 * Author: liang@whamcloud.com
36 #define DEBUG_SUBSYSTEM S_LNET
38 #include <libcfs/libcfs.h>
40 /** Global CPU partition table */
41 struct cfs_cpt_table *cfs_cpt_table __read_mostly = NULL;
42 EXPORT_SYMBOL(cfs_cpt_table);
44 #ifndef HAVE_LIBCFS_CPT
46 #define CFS_CPU_VERSION_MAGIC 0xbabecafe
48 struct cfs_cpt_table *
49 cfs_cpt_table_alloc(unsigned int ncpt)
51 struct cfs_cpt_table *cptab;
54 CERROR("Can't support cpu partition number %d\n", ncpt);
58 LIBCFS_ALLOC(cptab, sizeof(*cptab));
60 cptab->ctb_version = CFS_CPU_VERSION_MAGIC;
61 cptab->ctb_nparts = ncpt;
66 EXPORT_SYMBOL(cfs_cpt_table_alloc);
69 cfs_cpt_table_free(struct cfs_cpt_table *cptab)
71 LASSERT(cptab->ctb_version == CFS_CPU_VERSION_MAGIC);
73 LIBCFS_FREE(cptab, sizeof(*cptab));
75 EXPORT_SYMBOL(cfs_cpt_table_free);
78 cfs_cpt_number(struct cfs_cpt_table *cptab)
82 EXPORT_SYMBOL(cfs_cpt_number);
85 cfs_cpt_weight(struct cfs_cpt_table *cptab, int cpt)
89 EXPORT_SYMBOL(cfs_cpt_weight);
92 cfs_cpt_online(struct cfs_cpt_table *cptab, int cpt)
96 EXPORT_SYMBOL(cfs_cpt_online);
99 cfs_cpt_set_cpu(struct cfs_cpt_table *cptab, int cpt, int cpu)
103 EXPORT_SYMBOL(cfs_cpt_set_cpu);
106 cfs_cpt_unset_cpu(struct cfs_cpt_table *cptab, int cpt, int cpu)
109 EXPORT_SYMBOL(cfs_cpt_unset_cpu);
112 cfs_cpt_set_cpumask(struct cfs_cpt_table *cptab, int cpt, cpumask_t *mask)
116 EXPORT_SYMBOL(cfs_cpt_set_cpumask);
119 cfs_cpt_unset_cpumask(struct cfs_cpt_table *cptab, int cpt, cpumask_t *mask)
122 EXPORT_SYMBOL(cfs_cpt_unset_cpumask);
125 cfs_cpt_set_node(struct cfs_cpt_table *cptab, int cpt, int node)
129 EXPORT_SYMBOL(cfs_cpt_set_node);
132 cfs_cpt_unset_node(struct cfs_cpt_table *cptab, int cpt, int node)
135 EXPORT_SYMBOL(cfs_cpt_unset_node);
138 cfs_cpt_set_nodemask(struct cfs_cpt_table *cptab, int cpt, nodemask_t *mask)
142 EXPORT_SYMBOL(cfs_cpt_set_nodemask);
145 cfs_cpt_unset_nodemask(struct cfs_cpt_table *cptab, int cpt, nodemask_t *mask)
148 EXPORT_SYMBOL(cfs_cpt_unset_nodemask);
151 cfs_cpt_clear(struct cfs_cpt_table *cptab, int cpt)
154 EXPORT_SYMBOL(cfs_cpt_clear);
157 cfs_cpt_spread_node(struct cfs_cpt_table *cptab, int cpt)
161 EXPORT_SYMBOL(cfs_cpt_spread_node);
164 cfs_cpt_current(struct cfs_cpt_table *cptab, int remap)
168 EXPORT_SYMBOL(cfs_cpt_current);
171 cfs_cpt_of_cpu(struct cfs_cpt_table *cptab, int cpu)
175 EXPORT_SYMBOL(cfs_cpt_of_cpu);
178 cfs_cpt_bind(struct cfs_cpt_table *cptab, int cpt)
182 EXPORT_SYMBOL(cfs_cpt_bind);
187 if (cfs_cpt_table != NULL) {
188 cfs_cpt_table_free(cfs_cpt_table);
189 cfs_cpt_table = NULL;
196 cfs_cpt_table = cfs_cpt_table_alloc(1);
198 return cfs_cpt_table != NULL ? 0 : -1;
201 #endif /* HAVE_LIBCFS_CPT */