[CPUFREQ] add cpufreq_update_policy()

Add a new cpufreq_update_policy call:

Certain cpufreq policy notifers have different needs at different times.
Thus it needs to be possible to re-evaluate an already set cpufreq policy.
Note that the cpufreq policy should only be set by one person: the user.
Not any other in-kernel code [with one exception, of course: during
booting].

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index f747117285f4..2fe45a92c9fb 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -60,6 +60,13 @@ struct cpufreq_cpuinfo {
 	unsigned int		transition_latency; /* in 10^(-9) s */
 };
 
+struct cpufreq_real_policy {
+	unsigned int		min;    /* in kHz */
+	unsigned int		max;    /* in kHz */
+        unsigned int		policy; /* see above */
+	struct cpufreq_governor	*governor; /* see below */
+};
+
 struct cpufreq_policy {
 	unsigned int		cpu;    /* cpu nr */
 	struct cpufreq_cpuinfo	cpuinfo;/* see above */
@@ -74,6 +81,8 @@ struct cpufreq_policy {
  	struct semaphore	lock;   /* CPU ->setpolicy or ->target may
 					   only be called once a time */
 
+	struct cpufreq_real_policy	user_policy;
+
 	struct kobject		kobj;
 	struct completion	kobj_unregister;
 };
@@ -217,6 +226,7 @@ struct freq_attr {
  *********************************************************************/
 int cpufreq_set_policy(struct cpufreq_policy *policy);
 int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
+int cpufreq_update_policy(unsigned int cpu);
 
 /* the proc_intf.c needs this */
 int cpufreq_parse_governor (char *str_governor, unsigned int *policy, struct cpufreq_governor **governor);