diff options
| -rw-r--r-- | tools/testing/selftests/damon/Makefile | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/damon/access_memory_even.c | 42 |
2 files changed, 43 insertions, 1 deletions
diff --git a/tools/testing/selftests/damon/Makefile b/tools/testing/selftests/damon/Makefile index 29a22f50e762..7b972b5cf487 100644 --- a/tools/testing/selftests/damon/Makefile +++ b/tools/testing/selftests/damon/Makefile @@ -4,7 +4,7 @@ TEST_GEN_FILES += huge_count_read_write TEST_GEN_FILES += debugfs_target_ids_read_before_terminate_race TEST_GEN_FILES += debugfs_target_ids_pid_leak -TEST_GEN_FILES += access_memory +TEST_GEN_FILES += access_memory access_memory_even TEST_FILES = _chk_dependency.sh _debugfs_common.sh diff --git a/tools/testing/selftests/damon/access_memory_even.c b/tools/testing/selftests/damon/access_memory_even.c new file mode 100644 index 000000000000..3be121487432 --- /dev/null +++ b/tools/testing/selftests/damon/access_memory_even.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Artificial memory access program for testing DAMON. + * + * Receives number of regions and size of each region from user. Allocate the + * regions and repeatedly access even numbered (starting from zero) regions. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> + +int main(int argc, char *argv[]) +{ + char **regions; + clock_t start_clock; + int nr_regions; + int sz_region; + int access_time_ms; + int i; + + if (argc != 3) { + printf("Usage: %s <number> <size (bytes)>\n", argv[0]); + return -1; + } + + nr_regions = atoi(argv[1]); + sz_region = atoi(argv[2]); + + regions = malloc(sizeof(*regions) * nr_regions); + for (i = 0; i < nr_regions; i++) + regions[i] = malloc(sz_region); + + while (1) { + for (i = 0; i < nr_regions; i++) { + if (i % 2 == 0) + memset(regions[i], i, sz_region); + } + } + return 0; +} |