diff options
Diffstat (limited to 'tools/power/cpupower/lib/cpufreq.h')
| -rw-r--r-- | tools/power/cpupower/lib/cpufreq.h | 59 |
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 |