cpupower: Add cpuidle parts into library

This more or less is a renaming and moving of functions and should not
introduce any functional change.

cpupower was built from cpufrequtils (which had a C library providing easy
access to cpu frequency platform info). In the meantime it got enhanced
by quite some neat cpuidle userspace tools.

Now the cpu idle functions have been separated and added to the cpupower.so
library.
So beside an already existing public header file:
cpufreq.h
cpupower now also exports these cpu idle functions in:
cpuidle.h

Here again pasted for better review of the interfaces:

======================================
int cpuidle_is_state_disabled(unsigned int cpu,
                                       unsigned int idlestate);
int cpuidle_state_disable(unsigned int cpu, unsigned int idlestate,
                                   unsigned int disable);
unsigned long cpuidle_state_latency(unsigned int cpu,
                                                unsigned int idlestate);
unsigned long cpuidle_state_usage(unsigned int cpu,
                                        unsigned int idlestate);
unsigned long long cpuidle_state_time(unsigned int cpu,
                                                unsigned int idlestate);
char *cpuidle_state_name(unsigned int cpu,
                                unsigned int idlestate);
char *cpuidle_state_desc(unsigned int cpu,
                                unsigned int idlestate);
unsigned int cpuidle_state_count(unsigned int cpu);

char *cpuidle_get_governor(void);
char *cpuidle_get_driver(void);

======================================

Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 26 insertions, 33 deletions

diff --git a/tools/power/cpupower/lib/cpufreq.h b/tools/power/cpupower/lib/cpufreq.h
index 3aae8e7a0839..3b005c39f068 100644
--- a/tools/power/cpupower/lib/cpufreq.h
+++ b/tools/power/cpupower/lib/cpufreq.h
@@ -17,8 +17,8 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#ifndef _CPUFREQ_H
-#define _CPUFREQ_H 1
+#ifndef __CPUPOWER_CPUFREQ_H__
+#define __CPUPOWER_CPUFREQ_H__
 
 struct cpufreq_policy {
 	unsigned long min;
@@ -58,13 +58,6 @@ struct cpufreq_stats {
 extern "C" {
 #endif
 
-/*
- * returns 0 if the specified CPU is present (it doesn't say
- * whether it is online!), and an error value if not.
- */
-
-extern int cpufreq_cpu_exists(unsigned int cpu);
-
 /* determine current CPU frequency
  * - _kernel variant means kernel's opinion of CPU frequency
  * - _hardware variant means actual hardware CPU frequency,
@@ -73,9 +66,9 @@ extern int cpufreq_cpu_exists(unsigned int cpu);
  * returns 0 on failure, else frequency in kHz.
  */
 
-extern unsigned long cpufreq_get_freq_kernel(unsigned int cpu);
+unsigned long cpufreq_get_freq_kernel(unsigned int cpu);
 
-extern unsigned long cpufreq_get_freq_hardware(unsigned int cpu);
+unsigned long cpufreq_get_freq_hardware(unsigned int cpu);
 
 #define cpufreq_get(cpu) cpufreq_get_freq_kernel(cpu);
 
@@ -84,7 +77,7 @@ extern unsigned long cpufreq_get_freq_hardware(unsigned int cpu);
  *
  * returns 0 on failure, else transition latency in 10^(-9) s = nanoseconds
  */
-extern unsigned long cpufreq_get_transition_latency(unsigned int cpu);
+unsigned long cpufreq_get_transition_latency(unsigned int cpu);
 
 
 /* determine hardware CPU frequency limits
@@ -93,7 +86,7 @@ extern unsigned long cpufreq_get_transition_latency(unsigned int cpu);
  * considerations by cpufreq policy notifiers in the kernel.
  */
 
-extern int cpufreq_get_hardware_limits(unsigned int cpu,
+int cpufreq_get_hardware_limits(unsigned int cpu,
 				unsigned long *min,
 				unsigned long *max);
 
@@ -104,9 +97,9 @@ extern int cpufreq_get_hardware_limits(unsigned int cpu,
  * to avoid memory leakage, please.
  */
 
-extern char *cpufreq_get_driver(unsigned int cpu);
+char *cpufreq_get_driver(unsigned int cpu);
 
-extern void cpufreq_put_driver(char *ptr);
+void cpufreq_put_driver(char *ptr);
 
 
 /* determine CPUfreq policy currently used
@@ -116,9 +109,9 @@ extern void cpufreq_put_driver(char *ptr);
  */
 
 
-extern struct cpufreq_policy *cpufreq_get_policy(unsigned int cpu);
+struct cpufreq_policy *cpufreq_get_policy(unsigned int cpu);
 
-extern void cpufreq_put_policy(struct cpufreq_policy *policy);
+void cpufreq_put_policy(struct cpufreq_policy *policy);
 
 
 /* determine CPUfreq governors currently available
@@ -129,10 +122,10 @@ extern void cpufreq_put_policy(struct cpufreq_policy *policy);
  */
 
 
-extern struct cpufreq_available_governors
+struct cpufreq_available_governors
 *cpufreq_get_available_governors(unsigned int cpu);
 
-extern void cpufreq_put_available_governors(
+void cpufreq_put_available_governors(
 	struct cpufreq_available_governors *first);
 
 
@@ -143,10 +136,10 @@ extern void cpufreq_put_available_governors(
  * cpufreq_put_available_frequencies after use.
  */
 
-extern struct cpufreq_available_frequencies
+struct cpufreq_available_frequencies
 *cpufreq_get_available_frequencies(unsigned int cpu);
 
-extern void cpufreq_put_available_frequencies(
+void cpufreq_put_available_frequencies(
 		struct cpufreq_available_frequencies *first);
 
 
@@ -156,10 +149,10 @@ extern void cpufreq_put_available_frequencies(
  * to avoid memory leakage, please.
  */
 
-extern struct cpufreq_affected_cpus *cpufreq_get_affected_cpus(unsigned
+struct cpufreq_affected_cpus *cpufreq_get_affected_cpus(unsigned
 							int cpu);
 
-extern void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *first);
+void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *first);
 
 
 /* determine related CPUs
@@ -168,10 +161,10 @@ extern void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *first);
  * to avoid memory leakage, please.
  */
 
-extern struct cpufreq_affected_cpus *cpufreq_get_related_cpus(unsigned
+struct cpufreq_affected_cpus *cpufreq_get_related_cpus(unsigned
 							int cpu);
 
-extern void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *first);
+void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *first);
 
 
 /* determine stats for cpufreq subsystem
@@ -179,12 +172,12 @@ extern void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *first);
  * This is not available in all kernel versions or configurations.
  */
 
-extern struct cpufreq_stats *cpufreq_get_stats(unsigned int cpu,
+struct cpufreq_stats *cpufreq_get_stats(unsigned int cpu,
 					unsigned long long *total_time);
 
-extern void cpufreq_put_stats(struct cpufreq_stats *stats);
+void cpufreq_put_stats(struct cpufreq_stats *stats);
 
-extern unsigned long cpufreq_get_transitions(unsigned int cpu);
+unsigned long cpufreq_get_transitions(unsigned int cpu);
 
 
 /* set new cpufreq policy
@@ -193,7 +186,7 @@ extern unsigned long cpufreq_get_transitions(unsigned int cpu);
  * but results may differ depending e.g. on governors being available.
  */
 
-extern int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy);
+int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy);
 
 
 /* modify a policy by only changing min/max freq or governor
@@ -201,9 +194,9 @@ extern int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy);
  * Does not check whether result is what was intended.
  */
 
-extern int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq);
-extern int cpufreq_modify_policy_max(unsigned int cpu, unsigned long max_freq);
-extern int cpufreq_modify_policy_governor(unsigned int cpu, char *governor);
+int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq);
+int cpufreq_modify_policy_max(unsigned int cpu, unsigned long max_freq);
+int cpufreq_modify_policy_governor(unsigned int cpu, char *governor);
 
 
 /* set a specific frequency
@@ -213,7 +206,7 @@ extern int cpufreq_modify_policy_governor(unsigned int cpu, char *governor);
  * occurs. Also does not work on ->range() cpufreq drivers.
  */
 
-extern int cpufreq_set_frequency(unsigned int cpu,
+int cpufreq_set_frequency(unsigned int cpu,
 				unsigned long target_frequency);
 
 #ifdef __cplusplus