[LTP] [PATCH v4] hugetlb: limit hugepages according to MemAvailable

[Cyril Hrubis]

Hi!
> +void limit_hugepages(long *hpages)
> +{
> +	long mem_avail, max_hpages;
> +
> +	if (FILE_LINES_SCANF("/proc/meminfo",
> +			"MemAvailable: %ld", &mem_avail)) {
> +		/*
> +		 * Dropping caches and using "MemFree:" on kernel
> +		 * that doesn't have "MemAvailable:" in Meminfo
> +		 */

I've added one TINFO message here.

> +		SAFE_FILE_PRINTF("/proc/sys/vm/drop_caches", "3");
> +		mem_avail = SAFE_READ_MEMINFO("MemFree:");
> +	}
> +
> +	max_hpages = mem_avail / SAFE_READ_MEMINFO("Hugepagesize:");
> +
> +	if (*hpages > max_hpages) {
> +		tst_res(TINFO, "The hugepages beyond system available, here "
> +				"reset to 80%% of the max page count %ld",
> +				max_hpages);

Reworded this message a bit, to make it clearer.


And pushed, thanks.

-- 
Cyril Hrubis
chrubis@suse.cz