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Diffstat (limited to 'include/linux/cpufreq.h')
-rw-r--r--include/linux/cpufreq.h32
1 files changed, 23 insertions, 9 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 31b1b0e03df8..018dce868de6 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -148,6 +148,20 @@ struct cpufreq_policy {
struct notifier_block nb_max;
};
+/*
+ * Used for passing new cpufreq policy data to the cpufreq driver's ->verify()
+ * callback for sanitization. That callback is only expected to modify the min
+ * and max values, if necessary, and specifically it must not update the
+ * frequency table.
+ */
+struct cpufreq_policy_data {
+ struct cpufreq_cpuinfo cpuinfo;
+ struct cpufreq_frequency_table *freq_table;
+ unsigned int cpu;
+ unsigned int min; /* in kHz */
+ unsigned int max; /* in kHz */
+};
+
struct cpufreq_freqs {
struct cpufreq_policy *policy;
unsigned int old;
@@ -201,8 +215,6 @@ u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
struct cpufreq_policy *cpufreq_cpu_acquire(unsigned int cpu);
void cpufreq_cpu_release(struct cpufreq_policy *policy);
int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
-int cpufreq_set_policy(struct cpufreq_policy *policy,
- struct cpufreq_policy *new_policy);
void refresh_frequency_limits(struct cpufreq_policy *policy);
void cpufreq_update_policy(unsigned int cpu);
void cpufreq_update_limits(unsigned int cpu);
@@ -284,7 +296,7 @@ struct cpufreq_driver {
/* needed by all drivers */
int (*init)(struct cpufreq_policy *policy);
- int (*verify)(struct cpufreq_policy *policy);
+ int (*verify)(struct cpufreq_policy_data *policy);
/* define one out of two */
int (*setpolicy)(struct cpufreq_policy *policy);
@@ -415,8 +427,9 @@ static inline int cpufreq_thermal_control_enabled(struct cpufreq_driver *drv)
(drv->flags & CPUFREQ_IS_COOLING_DEV);
}
-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_data *policy,
+ unsigned int min,
+ unsigned int max)
{
if (policy->min < min)
policy->min = min;
@@ -432,10 +445,10 @@ static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
}
static inline void
-cpufreq_verify_within_cpu_limits(struct cpufreq_policy *policy)
+cpufreq_verify_within_cpu_limits(struct cpufreq_policy_data *policy)
{
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
- policy->cpuinfo.max_freq);
+ policy->cpuinfo.max_freq);
}
#ifdef CONFIG_CPU_FREQ
@@ -513,6 +526,7 @@ static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
* CPUFREQ GOVERNORS *
*********************************************************************/
+#define CPUFREQ_POLICY_UNKNOWN (0)
/*
* If (cpufreq_driver->target) exists, the ->governor decides what frequency
* within the limits is used. If (cpufreq_driver->setpolicy> exists, these
@@ -684,9 +698,9 @@ static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table);
-int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
+int cpufreq_frequency_table_verify(struct cpufreq_policy_data *policy,
struct cpufreq_frequency_table *table);
-int cpufreq_generic_frequency_table_verify(struct cpufreq_policy *policy);
+int cpufreq_generic_frequency_table_verify(struct cpufreq_policy_data *policy);
int cpufreq_table_index_unsorted(struct cpufreq_policy *policy,
unsigned int target_freq,