| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame] | 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 | } | ||||