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
37 # define EXPORT_SYMTAB
39 #define DEBUG_SUBSYSTEM S_LNET
41 #include <libcfs/libcfs.h>
43 /** Global CPU partition table */
44 struct cfs_cpt_table *cfs_cpt_table __read_mostly = NULL;
45 EXPORT_SYMBOL(cfs_cpt_table);
47 #ifndef HAVE_LIBCFS_CPT
49 #define CFS_CPU_VERSION_MAGIC 0xbabecafe
51 struct cfs_cpt_table *
52 cfs_cpt_table_alloc(unsigned int ncpt)
54 struct cfs_cpt_table *cptab;
57 CERROR("Can't support cpu partition number %d\n", ncpt);
61 LIBCFS_ALLOC(cptab, sizeof(*cptab));
63 cptab->ctb_version = CFS_CPU_VERSION_MAGIC;
64 cptab->ctb_nparts = ncpt;
69 EXPORT_SYMBOL(cfs_cpt_table_alloc);
72 cfs_cpt_table_free(struct cfs_cpt_table *cptab)
74 LASSERT(cptab->ctb_version == CFS_CPU_VERSION_MAGIC);
76 LIBCFS_FREE(cptab, sizeof(*cptab));
78 EXPORT_SYMBOL(cfs_cpt_table_free);
81 cfs_cpt_number(struct cfs_cpt_table *cptab)
85 EXPORT_SYMBOL(cfs_cpt_number);
88 cfs_cpt_weight(struct cfs_cpt_table *cptab, int cpt)
92 EXPORT_SYMBOL(cfs_cpt_weight);
95 cfs_cpt_online(struct cfs_cpt_table *cptab, int cpt)
99 EXPORT_SYMBOL(cfs_cpt_online);
102 cfs_cpt_set_cpu(struct cfs_cpt_table *cptab, int cpt, int cpu)
106 EXPORT_SYMBOL(cfs_cpt_set_cpu);
109 cfs_cpt_unset_cpu(struct cfs_cpt_table *cptab, int cpt, int cpu)
112 EXPORT_SYMBOL(cfs_cpt_unset_cpu);
115 cfs_cpt_set_cpumask(struct cfs_cpt_table *cptab, int cpt, cpumask_t *mask)
119 EXPORT_SYMBOL(cfs_cpt_set_cpumask);
122 cfs_cpt_unset_cpumask(struct cfs_cpt_table *cptab, int cpt, cpumask_t *mask)
125 EXPORT_SYMBOL(cfs_cpt_unset_cpumask);
128 cfs_cpt_set_node(struct cfs_cpt_table *cptab, int cpt, int node)
132 EXPORT_SYMBOL(cfs_cpt_set_node);
135 cfs_cpt_unset_node(struct cfs_cpt_table *cptab, int cpt, int node)
138 EXPORT_SYMBOL(cfs_cpt_unset_node);
141 cfs_cpt_set_nodemask(struct cfs_cpt_table *cptab, int cpt, nodemask_t *mask)
145 EXPORT_SYMBOL(cfs_cpt_set_nodemask);
148 cfs_cpt_unset_nodemask(struct cfs_cpt_table *cptab, int cpt, nodemask_t *mask)
151 EXPORT_SYMBOL(cfs_cpt_unset_nodemask);
154 cfs_cpt_clear(struct cfs_cpt_table *cptab, int cpt)
157 EXPORT_SYMBOL(cfs_cpt_clear);
160 cfs_cpt_spread_node(struct cfs_cpt_table *cptab, int cpt)
164 EXPORT_SYMBOL(cfs_cpt_spread_node);
167 cfs_cpt_current(struct cfs_cpt_table *cptab, int remap)
171 EXPORT_SYMBOL(cfs_cpt_current);
174 cfs_cpt_of_cpu(struct cfs_cpt_table *cptab, int cpu)
178 EXPORT_SYMBOL(cfs_cpt_of_cpu);
181 cfs_cpt_bind(struct cfs_cpt_table *cptab, int cpt)
185 EXPORT_SYMBOL(cfs_cpt_bind);
190 if (cfs_cpt_table != NULL) {
191 cfs_cpt_table_free(cfs_cpt_table);
192 cfs_cpt_table = NULL;
199 cfs_cpt_table = cfs_cpt_table_alloc(1);
201 return cfs_cpt_table != NULL ? 0 : -1;
204 #endif /* HAVE_LIBCFS_CPT */