Files
Linux_Drivers/linux_5.10/tools/lib/api/cpu.c
sam.xiang 5c7dd7acc3 [linux] create linux_5.10.4 from T-head official:
repo: https://github.com/T-head-Semi/linux
	commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb

Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
2023-03-10 20:32:41 +08:00

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);
}