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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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1234567891011121314151617181920// 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);}