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, 17 insertions, 15 deletions

diff --git a/tools/power/cpupower/utils/cpuidle-info.c b/tools/power/cpupower/utils/cpuidle-info.c
index 8bf8ab5ffa25..b59c85defa05 100644
--- a/tools/power/cpupower/utils/cpuidle-info.c
+++ b/tools/power/cpupower/utils/cpuidle-info.c
@@ -13,8 +13,10 @@
 #include <string.h>
 #include <getopt.h>
 
-#include "helpers/helpers.h"
+#include <cpuidle.h>
+
 #include "helpers/sysfs.h"
+#include "helpers/helpers.h"
 #include "helpers/bitmask.h"
 
 #define LINE_LEN 10
@@ -24,7 +26,7 @@ static void cpuidle_cpu_output(unsigned int cpu, int verbose)
 	unsigned int idlestates, idlestate;
 	char *tmp;
 
-	idlestates = sysfs_get_idlestate_count(cpu);
+	idlestates = cpuidle_state_count(cpu);
 	if (idlestates == 0) {
 		printf(_("CPU %u: No idle states\n"), cpu);
 		return;
@@ -33,7 +35,7 @@ static void cpuidle_cpu_output(unsigned int cpu, int verbose)
 	printf(_("Number of idle states: %d\n"), idlestates);
 	printf(_("Available idle states:"));
 	for (idlestate = 0; idlestate < idlestates; idlestate++) {
-		tmp = sysfs_get_idlestate_name(cpu, idlestate);
+		tmp = cpuidle_state_name(cpu, idlestate);
 		if (!tmp)
 			continue;
 		printf(" %s", tmp);
@@ -45,28 +47,28 @@ static void cpuidle_cpu_output(unsigned int cpu, int verbose)
 		return;
 
 	for (idlestate = 0; idlestate < idlestates; idlestate++) {
-		int disabled = sysfs_is_idlestate_disabled(cpu, idlestate);
+		int disabled = cpuidle_is_state_disabled(cpu, idlestate);
 		/* Disabled interface not supported on older kernels */
 		if (disabled < 0)
 			disabled = 0;
-		tmp = sysfs_get_idlestate_name(cpu, idlestate);
+		tmp = cpuidle_state_name(cpu, idlestate);
 		if (!tmp)
 			continue;
 		printf("%s%s:\n", tmp, (disabled) ? " (DISABLED) " : "");
 		free(tmp);
 
-		tmp = sysfs_get_idlestate_desc(cpu, idlestate);
+		tmp = cpuidle_state_desc(cpu, idlestate);
 		if (!tmp)
 			continue;
 		printf(_("Flags/Description: %s\n"), tmp);
 		free(tmp);
 
 		printf(_("Latency: %lu\n"),
-		       sysfs_get_idlestate_latency(cpu, idlestate));
+		       cpuidle_state_latency(cpu, idlestate));
 		printf(_("Usage: %lu\n"),
-		       sysfs_get_idlestate_usage(cpu, idlestate));
+		       cpuidle_state_usage(cpu, idlestate));
 		printf(_("Duration: %llu\n"),
-		       sysfs_get_idlestate_time(cpu, idlestate));
+		       cpuidle_state_time(cpu, idlestate));
 	}
 }
 
@@ -74,7 +76,7 @@ static void cpuidle_general_output(void)
 {
 	char *tmp;
 
-	tmp = sysfs_get_cpuidle_driver();
+	tmp = cpuidle_get_driver();
 	if (!tmp) {
 		printf(_("Could not determine cpuidle driver\n"));
 		return;
@@ -83,7 +85,7 @@ static void cpuidle_general_output(void)
 	printf(_("CPUidle driver: %s\n"), tmp);
 	free(tmp);
 
-	tmp = sysfs_get_cpuidle_governor();
+	tmp = cpuidle_get_governor();
 	if (!tmp) {
 		printf(_("Could not determine cpuidle governor\n"));
 		return;
@@ -98,7 +100,7 @@ static void proc_cpuidle_cpu_output(unsigned int cpu)
 	long max_allowed_cstate = 2000000000;
 	unsigned int cstate, cstates;
 
-	cstates = sysfs_get_idlestate_count(cpu);
+	cstates = cpuidle_state_count(cpu);
 	if (cstates == 0) {
 		printf(_("CPU %u: No C-states info\n"), cpu);
 		return;
@@ -113,11 +115,11 @@ static void proc_cpuidle_cpu_output(unsigned int cpu)
 			 "type[C%d] "), cstate, cstate);
 		printf(_("promotion[--] demotion[--] "));
 		printf(_("latency[%03lu] "),
-		       sysfs_get_idlestate_latency(cpu, cstate));
+		       cpuidle_state_latency(cpu, cstate));
 		printf(_("usage[%08lu] "),
-		       sysfs_get_idlestate_usage(cpu, cstate));
+		       cpuidle_state_usage(cpu, cstate));
 		printf(_("duration[%020Lu] \n"),
-		       sysfs_get_idlestate_time(cpu, cstate));
+		       cpuidle_state_time(cpu, cstate));
 	}
 }