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cpu.c
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cpu.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <cpufreq.h>
#ifndef LOG
#define LOG(...) printf(__VA_ARGS__);
#endif
#define CPU_INDEX 0
int setCPUMax(unsigned int index) {
unsigned long cpu_cur = 0;
unsigned long cpu_max = 0;
unsigned long cpu_min = 0;
if (cpufreq_cpu_exists(index) != 0) {
LOG("Invalid CPU index!\n");
return -1;
}
if (cpufreq_get_hardware_limits(index, &cpu_min, &cpu_max) != 0) {
LOG("Unable to get hardware limits!\n");
return -1;
}
if (cpufreq_set_frequency(index, cpu_max) != 0) {
LOG("Unable to set frequency(%luMHz) Are u root?\n", cpu_max / 1000);
return -1;
}
cpu_cur = (cpufreq_get_freq_kernel(index) / 1000);
LOG("Current CPU Frequency: %lu MHz\n", cpu_cur);
return 0;
}
int setCPUMin(unsigned int index) {
unsigned long cpu_cur = 0;
unsigned long cpu_max = 0;
unsigned long cpu_min = 0;
if (cpufreq_cpu_exists(index) != 0) {
LOG("Invalid CPU index!\n");
return -1;
}
if (cpufreq_get_hardware_limits(index, &cpu_min, &cpu_max) != 0) {
LOG("Unable to get hardware limits!\n");
return -1;
}
if (cpufreq_set_frequency(index, cpu_min) != 0) {
LOG("Unable to set frequency(%luMHz) Are u root?\n", cpu_min / 1000);
return -1;
}
cpu_cur = (cpufreq_get_freq_kernel(index) / 1000);
LOG("Current CPU Frequency: %lu MHz\n", cpu_cur);
return 0;
}
int main() {
setCPUMin(CPU_INDEX);
setCPUMax(CPU_INDEX);
return 0;
}