mirror of https://gitee.com/openkylin/linux.git
20 lines
387 B
C
20 lines
387 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
#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);
|
|
}
|