Merge tag 'for-5.2/io_uring-20190507' of git://git.kernel.dk/linux-block
[sfrench/cifs-2.6.git] / tools / lib / api / cpu.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <stdio.h>
3
4 #include "cpu.h"
5 #include "fs/fs.h"
6
7 int cpu__get_max_freq(unsigned long long *freq)
8 {
9         char entry[PATH_MAX];
10         int cpu;
11
12         if (sysfs__read_int("devices/system/cpu/online", &cpu) < 0)
13                 return -1;
14
15         snprintf(entry, sizeof(entry),
16                  "devices/system/cpu/cpu%d/cpufreq/cpuinfo_max_freq", cpu);
17
18         return sysfs__read_ull(entry, freq);
19 }