1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Artificial memory access program for testing DAMON.
 4 *
 5 * Receives number of regions and size of each region from user.  Allocate the
 6 * regions and repeatedly access even numbered (starting from zero) regions.
 7 */
 8
 9#include <stdio.h>
10#include <stdlib.h>
11#include <string.h>
12#include <time.h>
13
14int main(int argc, char *argv[])
15{
16	char **regions;
17	int nr_regions;
18	int sz_region;
19	int i;
20
21	if (argc != 3) {
22		printf("Usage: %s <number> <size (bytes)>\n", argv[0]);
23		return -1;
24	}
25
26	nr_regions = atoi(argv[1]);
27	sz_region = atoi(argv[2]);
28
29	regions = malloc(sizeof(*regions) * nr_regions);
30	for (i = 0; i < nr_regions; i++)
31		regions[i] = malloc(sz_region);
32
33	while (1) {
34		for (i = 0; i < nr_regions; i++) {
35			if (i % 2 == 0)
36				memset(regions[i], i, sz_region);
37		}
38	}
39	return 0;
40}