2 * Copyright (c) 2012 NVIDIA CORPORATION. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 #ifndef _LINUX_CPUONLINE_H
20 #define _LINUX_CPUONLINE_H
22 #include <linux/sysfs.h>
23 #include <linux/kobject.h>
25 #define CPUQUIET_NAME_LEN 16
27 struct cpuquiet_governor {
28 char name[CPUQUIET_NAME_LEN];
29 struct list_head governor_list;
32 int (*store_active) (unsigned int cpu, bool active);
33 void (*device_free_notification) (void);
34 void (*device_busy_notification) (void);
38 struct cpuquiet_driver {
39 char name[CPUQUIET_NAME_LEN];
40 int (*quiesence_cpu) (unsigned int cpunumber, bool sync);
41 int (*wake_cpu) (unsigned int cpunumber, bool sync);
44 extern int cpuquiet_register_governor(struct cpuquiet_governor *gov);
45 extern void cpuquiet_unregister_governor(struct cpuquiet_governor *gov);
46 extern int cpuquiet_quiesence_cpu(unsigned int cpunumber, bool sync);
47 extern int cpuquiet_wake_cpu(unsigned int cpunumber, bool sync);
48 extern int cpuquiet_register_driver(struct cpuquiet_driver *drv);
49 extern void cpuquiet_unregister_driver(struct cpuquiet_driver *drv);
50 extern int cpuquiet_add_group(struct attribute_group *attrs);
51 extern void cpuquiet_remove_group(struct attribute_group *attrs);
52 extern void cpuquiet_device_busy(void);
53 extern void cpuquiet_device_free(void);
54 int cpuquiet_kobject_init(struct kobject *kobj, struct kobj_type *type,
56 extern unsigned int nr_cluster_ids;
59 struct cpuquiet_attribute {
60 struct attribute attr;
61 ssize_t (*show)(struct cpuquiet_attribute *attr, char *buf);
62 ssize_t (*store)(struct cpuquiet_attribute *attr, const char *buf,
64 /* Optional. Called after store is called */
65 void (*store_callback)(struct cpuquiet_attribute *attr);
69 #define CPQ_ATTRIBUTE(_name, _mode, _type, _callback) \
70 static struct cpuquiet_attribute _name ## _attr = { \
71 .attr = {.name = __stringify(_name), .mode = _mode }, \
72 .show = show_ ## _type ## _attribute, \
73 .store = store_ ## _type ## _attribute, \
74 .store_callback = _callback, \
78 #define CPQ_BASIC_ATTRIBUTE(_name, _mode, _type) \
79 CPQ_ATTRIBUTE(_name, _mode, _type, NULL)
81 #define CPQ_ATTRIBUTE_CUSTOM(_name, _mode, _show, _store) \
82 static struct cpuquiet_attribute _name ## _attr = { \
83 .attr = {.name = __stringify(_name), .mode = _mode }, \
86 .store_callback = NULL, \
91 extern ssize_t show_int_attribute(struct cpuquiet_attribute *cattr, char *buf);
92 extern ssize_t store_int_attribute(struct cpuquiet_attribute *cattr,
93 const char *buf, size_t count);
94 extern ssize_t show_bool_attribute(struct cpuquiet_attribute *cattr, char *buf);
95 extern ssize_t store_bool_attribute(struct cpuquiet_attribute *cattr,
96 const char *buf, size_t count);
97 extern ssize_t store_uint_attribute(struct cpuquiet_attribute *cattr,
98 const char *buf, size_t count);
99 extern ssize_t show_uint_attribute(struct cpuquiet_attribute *cattr, char *buf);
100 extern ssize_t store_ulong_attribute(struct cpuquiet_attribute *cattr,
101 const char *buf, size_t count);
102 extern ssize_t show_ulong_attribute(struct cpuquiet_attribute *cattr,
104 extern ssize_t cpuquiet_auto_sysfs_show(struct kobject *kobj,
105 struct attribute *attr, char *buf);
106 extern ssize_t cpuquiet_auto_sysfs_store(struct kobject *kobj,
107 struct attribute *attr, const char *buf,