tegrakernel/kernel/kernel-4.9/tools/lib/api/cpu.c

19 lines
351 B
C

#include <stdio.h>
#include "cpu.h"
#include "fs/fs.h"
int cpu__get_max_freq(unsigned long long *freq)
{
char entry[PATH_MAX];
int cpu;
if (sysfs__read_int("devices/system/cpu/online", &cpu) < 0)
return -1;
snprintf(entry, sizeof(entry),
"devices/system/cpu/cpu%d/cpufreq/cpuinfo_max_freq", cpu);
return sysfs__read_ull(entry, freq);
}