[LTP] cpufreq.c: add new test for cpufreq sysfs interface validation

[linuxtestproject.agent@gmail.com]

Hi Piotr,

On Mon, 4 May 2026 12:08:42 +0200, Piotr Kubaj wrote:
> cpufreq.c: add new test for cpufreq sysfs interface validation

> +		snprintf(path, sizeof(path), "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor", i);
> +		...
> +		SAFE_FILE_PRINTF(path, "powersave");

scaling_governor is modified for every online CPU (in both the active-mode
and passive-mode loops) but is never saved in setup() nor restored in
cleanup(). After the test exits each CPU is left with scaling_governor set
to "schedutil". Please save the original value per CPU in setup() alongside
previous_scaling_max_freq and restore it in cleanup().

[...]

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