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 14 int main(int argc, char *argv[]) 15 { 16 char **regions; 17 clock_t start_clock; 18 int nr_regions; 19 int sz_region; 20 int access_time_ms; 21 int i; 22 23 if (argc != 3) { 24 printf("Usage: %s <number> <size (bytes)>\n", argv[0]); 25 return -1; 26 } 27 28 nr_regions = atoi(argv[1]); 29 sz_region = atoi(argv[2]); 30 31 regions = malloc(sizeof(*regions) * nr_regions); 32 for (i = 0; i < nr_regions; i++) 33 regions[i] = malloc(sz_region); 34 35 while (1) { 36 for (i = 0; i < nr_regions; i++) { 37 if (i % 2 == 0) 38 memset(regions[i], i, sz_region); 39 } 40 } 41 return 0; 42 } 43