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OpenCloudOS-Kernel/tools/power/cpupower/lib/sysfs.h

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cpupowerutils - cpufrequtils extended with quite some features CPU power consumption vs performance tuning is no longer limited to CPU frequency switching anymore: deep sleep states, traditional dynamic frequency scaling and hidden turbo/boost frequencies are tied close together and depend on each other. The first two exist on different architectures like PPC, Itanium and ARM, the latter (so far) only on X86. On X86 the APU (CPU+GPU) will only run most efficiently if CPU and GPU has proper power management in place. Users and Developers want to have *one* tool to get an overview what their system supports and to monitor and debug CPU power management in detail. The tool should compile and work on as many architectures as possible. Once this tool stabilizes a bit, it is intended to replace the Intel-specific tools in tools/power/x86 Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-03-30 22:30:11 +08:00
/* General */
extern unsigned int sysfs_cpu_exists(unsigned int cpu);
/* CPUfreq */
extern unsigned long sysfs_get_freq_kernel(unsigned int cpu);
extern unsigned long sysfs_get_freq_hardware(unsigned int cpu);
extern unsigned long sysfs_get_freq_transition_latency(unsigned int cpu);
cpupowerutils: lib - ConfigStyle bugfixes Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-04-20 01:42:33 +08:00
extern int sysfs_get_freq_hardware_limits(unsigned int cpu,
unsigned long *min, unsigned long *max);
extern char *sysfs_get_freq_driver(unsigned int cpu);
extern struct cpufreq_policy *sysfs_get_freq_policy(unsigned int cpu);
extern struct cpufreq_available_governors *sysfs_get_freq_available_governors(
unsigned int cpu);
extern struct cpufreq_available_frequencies *sysfs_get_available_frequencies(
unsigned int cpu);
extern struct cpufreq_affected_cpus *sysfs_get_freq_affected_cpus(
unsigned int cpu);
extern struct cpufreq_affected_cpus *sysfs_get_freq_related_cpus(
unsigned int cpu);
extern struct cpufreq_stats *sysfs_get_freq_stats(unsigned int cpu,
unsigned long long *total_time);
cpupowerutils - cpufrequtils extended with quite some features CPU power consumption vs performance tuning is no longer limited to CPU frequency switching anymore: deep sleep states, traditional dynamic frequency scaling and hidden turbo/boost frequencies are tied close together and depend on each other. The first two exist on different architectures like PPC, Itanium and ARM, the latter (so far) only on X86. On X86 the APU (CPU+GPU) will only run most efficiently if CPU and GPU has proper power management in place. Users and Developers want to have *one* tool to get an overview what their system supports and to monitor and debug CPU power management in detail. The tool should compile and work on as many architectures as possible. Once this tool stabilizes a bit, it is intended to replace the Intel-specific tools in tools/power/x86 Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-03-30 22:30:11 +08:00
extern unsigned long sysfs_get_freq_transitions(unsigned int cpu);
cpupowerutils: lib - ConfigStyle bugfixes Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-04-20 01:42:33 +08:00
extern int sysfs_set_freq_policy(unsigned int cpu,
struct cpufreq_policy *policy);
extern int sysfs_modify_freq_policy_min(unsigned int cpu,
unsigned long min_freq);
extern int sysfs_modify_freq_policy_max(unsigned int cpu,
unsigned long max_freq);
cpupowerutils - cpufrequtils extended with quite some features CPU power consumption vs performance tuning is no longer limited to CPU frequency switching anymore: deep sleep states, traditional dynamic frequency scaling and hidden turbo/boost frequencies are tied close together and depend on each other. The first two exist on different architectures like PPC, Itanium and ARM, the latter (so far) only on X86. On X86 the APU (CPU+GPU) will only run most efficiently if CPU and GPU has proper power management in place. Users and Developers want to have *one* tool to get an overview what their system supports and to monitor and debug CPU power management in detail. The tool should compile and work on as many architectures as possible. Once this tool stabilizes a bit, it is intended to replace the Intel-specific tools in tools/power/x86 Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-03-30 22:30:11 +08:00
extern int sysfs_modify_freq_policy_governor(unsigned int cpu, char *governor);
cpupowerutils: lib - ConfigStyle bugfixes Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-04-20 01:42:33 +08:00
extern int sysfs_set_frequency(unsigned int cpu,
unsigned long target_frequency);