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 13 int main(int argc, char *argv[]) 14 { 15 char **regions; 16 int nr_regions; 17 int sz_region; 18 int i; 19 20 if (argc != 3) { 21 printf("Usage: %s <number> <size (bytes)>\n", argv[0]); 22 return -1; 23 } 24 25 nr_regions = atoi(argv[1]); 26 sz_region = atoi(argv[2]); 27 28 regions = malloc(sizeof(*regions) * nr_regions); 29 for (i = 0; i < nr_regions; i++) 30 regions[i] = malloc(sz_region); 31 32 while (1) { 33 for (i = 0; i < nr_regions; i++) { 34 if (i % 2 == 0) 35 memset(regions[i], i, sz_region); 36 } 37 } 38 return 0; 39 } 40