diff options
Diffstat (limited to 'tools/testing/selftests/damon/access_memory.c')
| -rw-r--r-- | tools/testing/selftests/damon/access_memory.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/tools/testing/selftests/damon/access_memory.c b/tools/testing/selftests/damon/access_memory.c index 56b17e8fe1be..567793b11107 100644 --- a/tools/testing/selftests/damon/access_memory.c +++ b/tools/testing/selftests/damon/access_memory.c @@ -8,6 +8,11 @@ #include <string.h> #include <time.h> +enum access_mode { + ACCESS_MODE_ONCE, + ACCESS_MODE_REPEAT, +}; + int main(int argc, char *argv[]) { char **regions; @@ -15,10 +20,12 @@ int main(int argc, char *argv[]) int nr_regions; int sz_region; int access_time_ms; + enum access_mode mode = ACCESS_MODE_ONCE; + int i; - if (argc != 4) { - printf("Usage: %s <number> <size (bytes)> <time (ms)>\n", + if (argc < 4) { + printf("Usage: %s <number> <size (bytes)> <time (ms)> [mode]\n", argv[0]); return -1; } @@ -27,15 +34,21 @@ int main(int argc, char *argv[]) sz_region = atoi(argv[2]); access_time_ms = atoi(argv[3]); + if (argc > 4 && !strcmp(argv[4], "repeat")) + mode = ACCESS_MODE_REPEAT; + regions = malloc(sizeof(*regions) * nr_regions); for (i = 0; i < nr_regions; i++) regions[i] = malloc(sz_region); - for (i = 0; i < nr_regions; i++) { - start_clock = clock(); - while ((clock() - start_clock) * 1000 / CLOCKS_PER_SEC < - access_time_ms) - memset(regions[i], i, sz_region); - } + do { + for (i = 0; i < nr_regions; i++) { + start_clock = clock(); + while ((clock() - start_clock) * 1000 / CLOCKS_PER_SEC + < access_time_ms) + memset(regions[i], i, sz_region); + } + } while (mode == ACCESS_MODE_REPEAT); + return 0; } |