1 #include <stdio.h> 2 3 #include "cpu.h" 4 #include "fs/fs.h" 5 6 int cpu__get_max_freq(unsigned long long *freq) 7 { 8 char entry[PATH_MAX]; 9 int cpu; 10 11 if (sysfs__read_int("devices/system/cpu/online", &cpu) < 0) 12 return -1; 13 14 snprintf(entry, sizeof(entry), 15 "devices/system/cpu/cpu%d/cpufreq/cpuinfo_max_freq", cpu); 16 17 return sysfs__read_ull(entry, freq); 18 } 19