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Linux/tools/lib/api/cpu.c

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  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 }
 20 

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