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Diffstat (limited to 'include/linux/cpuquiet.h')
| -rw-r--r-- | include/linux/cpuquiet.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/linux/cpuquiet.h b/include/linux/cpuquiet.h new file mode 100644 index 000000000000..fe5a03727739 --- /dev/null +++ b/include/linux/cpuquiet.h @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2012 NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef _LINUX_CPUONLINE_H +#define _LINUX_CPUONLINE_H + +#include <linux/sysfs.h> +#include <linux/kobject.h> + +#define CPUQUIET_NAME_LEN 16 + +struct cpuquiet_governor { + char name[CPUQUIET_NAME_LEN]; + struct list_head governor_list; + int (*start) (void); + void (*stop) (void); + int (*store_active) (unsigned int cpu, bool active); + struct module *owner; +}; + +struct cpuquiet_driver { + char name[CPUQUIET_NAME_LEN]; + int (*quiesence_cpu) (unsigned int cpunumber); + int (*wake_cpu) (unsigned int cpunumber); +}; + +extern int cpuquiet_register_governor(struct cpuquiet_governor *gov); +extern void cpuquiet_unregister_governor(struct cpuquiet_governor *gov); +extern int cpuquiet_quiesence_cpu(unsigned int cpunumber); +extern int cpuquiet_wake_cpu(unsigned int cpunumber); +extern int cpuquiet_register_driver(struct cpuquiet_driver *drv); +extern void cpuquiet_unregister_driver(struct cpuquiet_driver *drv); +extern int cpuquiet_add_group(struct attribute_group *attrs); +extern void cpuquiet_remove_group(struct attribute_group *attrs); +int cpuquiet_kobject_init(struct kobject *kobj, struct kobj_type *type, + char *name); +extern unsigned int nr_cluster_ids; + +/* Sysfs support */ +struct cpuquiet_attribute { + struct attribute attr; + ssize_t (*show)(struct cpuquiet_attribute *attr, char *buf); + ssize_t (*store)(struct cpuquiet_attribute *attr, const char *buf, + size_t count); + /* Optional. Called after store is called */ + void (*store_callback)(struct cpuquiet_attribute *attr); + void *param; +}; + +#define CPQ_ATTRIBUTE(_name, _mode, _type, _callback) \ + static struct cpuquiet_attribute _name ## _attr = { \ + .attr = {.name = __stringify(_name), .mode = _mode }, \ + .show = show_ ## _type ## _attribute, \ + .store = store_ ## _type ## _attribute, \ + .store_callback = _callback, \ + .param = &_name, \ +} + +#define CPQ_BASIC_ATTRIBUTE(_name, _mode, _type) \ + CPQ_ATTRIBUTE(_name, _mode, _type, NULL) + +#define CPQ_ATTRIBUTE_CUSTOM(_name, _mode, _show, _store) \ + static struct cpuquiet_attribute _name ## _attr = { \ + .attr = {.name = __stringify(_name), .mode = _mode }, \ + .show = _show, \ + .store = _store \ + .store_callback = NULL, \ + .param = &_name, \ +} + + +extern ssize_t show_int_attribute(struct cpuquiet_attribute *cattr, char *buf); +extern ssize_t store_int_attribute(struct cpuquiet_attribute *cattr, + const char *buf, size_t count); +extern ssize_t show_bool_attribute(struct cpuquiet_attribute *cattr, char *buf); +extern ssize_t store_bool_attribute(struct cpuquiet_attribute *cattr, + const char *buf, size_t count); +extern ssize_t store_uint_attribute(struct cpuquiet_attribute *cattr, + const char *buf, size_t count); +extern ssize_t show_uint_attribute(struct cpuquiet_attribute *cattr, char *buf); +extern ssize_t store_ulong_attribute(struct cpuquiet_attribute *cattr, + const char *buf, size_t count); +extern ssize_t show_ulong_attribute(struct cpuquiet_attribute *cattr, + char *buf); +extern ssize_t cpuquiet_auto_sysfs_show(struct kobject *kobj, + struct attribute *attr, char *buf); +extern ssize_t cpuquiet_auto_sysfs_store(struct kobject *kobj, + struct attribute *attr, const char *buf, + size_t count); +#endif |