summaryrefslogtreecommitdiff
path: root/include/linux/cpufreq.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/cpufreq.h')
-rw-r--r--include/linux/cpufreq.h54
1 files changed, 32 insertions, 22 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 037d36ae63e5..4d7390bc1727 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -1,8 +1,8 @@
/*
- * linux/include/linux/cpufreq.h
+ * linux/include/linux/cpufreq.h
*
- * Copyright (C) 2001 Russell King
- * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
+ * Copyright (C) 2001 Russell King
+ * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -26,7 +26,6 @@
/* Print length for names. Extra 1 space for accomodating '\n' in prints */
#define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1)
-
/*********************************************************************
* CPUFREQ NOTIFIER INTERFACE *
*********************************************************************/
@@ -71,6 +70,10 @@ struct cpufreq_governor;
/* /sys/devices/system/cpu/cpufreq: entry point for global variables */
extern struct kobject *cpufreq_global_kobject;
+int cpufreq_get_global_kobject(void);
+void cpufreq_put_global_kobject(void);
+int cpufreq_sysfs_create_file(const struct attribute *attr);
+void cpufreq_sysfs_remove_file(const struct attribute *attr);
#define CPUFREQ_ETERNAL (-1)
struct cpufreq_cpuinfo {
@@ -107,6 +110,7 @@ struct cpufreq_policy {
unsigned int policy; /* see above */
struct cpufreq_governor *governor; /* see below */
void *governor_data;
+ bool governor_enabled; /* governor start/stop flag */
struct work_struct update; /* if update_policy() needs to be
* called, but you're in IRQ context */
@@ -115,6 +119,7 @@ struct cpufreq_policy {
struct kobject kobj;
struct completion kobj_unregister;
+ bool transition_ongoing; /* Tracks transition status */
};
#define CPUFREQ_ADJUST (0)
@@ -148,17 +153,18 @@ struct cpufreq_freqs {
u8 flags; /* flags of cpufreq_driver, see below. */
};
-
/**
- * cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch safe)
+ * cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch
+ * safe)
* @old: old value
* @div: divisor
* @mult: multiplier
*
*
- * new = old * mult / div
+ * new = old * mult / div
*/
-static inline unsigned long cpufreq_scale(unsigned long old, u_int div, u_int mult)
+static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
+ u_int mult)
{
#if BITS_PER_LONG == 32
@@ -211,14 +217,12 @@ extern int __cpufreq_driver_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation);
-
extern int __cpufreq_driver_getavg(struct cpufreq_policy *policy,
unsigned int cpu);
int cpufreq_register_governor(struct cpufreq_governor *governor);
void cpufreq_unregister_governor(struct cpufreq_governor *governor);
-
/*********************************************************************
* CPUFREQ DRIVER INTERFACE *
*********************************************************************/
@@ -229,7 +233,7 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor);
struct freq_attr;
struct cpufreq_driver {
- struct module *owner;
+ struct module *owner;
char name[CPUFREQ_NAME_LEN];
u8 flags;
/*
@@ -277,11 +281,11 @@ struct cpufreq_driver {
int cpufreq_register_driver(struct cpufreq_driver *driver_data);
int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
-
void cpufreq_notify_transition(struct cpufreq_policy *policy,
struct cpufreq_freqs *freqs, unsigned int state);
-static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, unsigned int min, unsigned int max)
+static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
+ unsigned int min, unsigned int max)
{
if (policy->min < min)
policy->min = min;
@@ -337,12 +341,16 @@ const char *cpufreq_get_current_driver(void);
/*********************************************************************
* CPUFREQ 2.6. INTERFACE *
*********************************************************************/
+u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
int cpufreq_update_policy(unsigned int cpu);
bool have_governor_per_policy(void);
+struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy);
#ifdef CONFIG_CPU_FREQ
-/* query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it */
+/*
+ * query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it
+ */
unsigned int cpufreq_get(unsigned int cpu);
#else
static inline unsigned int cpufreq_get(unsigned int cpu)
@@ -351,7 +359,9 @@ static inline unsigned int cpufreq_get(unsigned int cpu)
}
#endif
-/* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it */
+/*
+ * query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it
+ */
#ifdef CONFIG_CPU_FREQ
unsigned int cpufreq_quick_get(unsigned int cpu);
unsigned int cpufreq_quick_get_max(unsigned int cpu);
@@ -366,16 +376,14 @@ static inline unsigned int cpufreq_quick_get_max(unsigned int cpu)
}
#endif
-
/*********************************************************************
* CPUFREQ DEFAULT GOVERNOR *
*********************************************************************/
-
/*
- Performance governor is fallback governor if any other gov failed to
- auto load due latency restrictions
-*/
+ * Performance governor is fallback governor if any other gov failed to auto
+ * load due latency restrictions
+ */
#ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE
extern struct cpufreq_governor cpufreq_gov_performance;
#endif
@@ -395,7 +403,6 @@ extern struct cpufreq_governor cpufreq_gov_conservative;
#define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_conservative)
#endif
-
/*********************************************************************
* FREQUENCY TABLE HELPERS *
*********************************************************************/
@@ -404,7 +411,7 @@ extern struct cpufreq_governor cpufreq_gov_conservative;
#define CPUFREQ_TABLE_END ~1
struct cpufreq_frequency_table {
- unsigned int index; /* any */
+ unsigned int driver_data; /* driver specific data, not used by core */
unsigned int frequency; /* kHz - doesn't need to be in ascending
* order */
};
@@ -432,4 +439,7 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy);
void cpufreq_frequency_table_put_attr(unsigned int cpu);
+
+ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf);
+
#endif /* _LINUX_CPUFREQ_H */
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-06 09:51:16 +0000