diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/test_maps.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c index cada17ac00b8..a0aa2009b0e0 100644 --- a/tools/testing/selftests/bpf/test_maps.c +++ b/tools/testing/selftests/bpf/test_maps.c @@ -80,8 +80,9 @@ static void test_hashmap(int task, void *data) assert(bpf_map_update_elem(fd, &key, &value, BPF_EXIST) == 0); key = 2; assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0); - key = 1; - assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0); + key = 3; + assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == -1 && + errno == E2BIG); /* Check that key = 0 doesn't exist. */ key = 0; @@ -110,6 +111,24 @@ static void test_hashmap(int task, void *data) close(fd); } +static void test_hashmap_sizes(int task, void *data) +{ + int fd, i, j; + + for (i = 1; i <= 512; i <<= 1) + for (j = 1; j <= 1 << 18; j <<= 1) { + fd = bpf_create_map(BPF_MAP_TYPE_HASH, i, j, + 2, map_flags); + if (fd < 0) { + printf("Failed to create hashmap key=%d value=%d '%s'\n", + i, j, strerror(errno)); + exit(1); + } + close(fd); + usleep(10); /* give kernel time to destroy */ + } +} + static void test_hashmap_percpu(int task, void *data) { unsigned int nr_cpus = bpf_num_possible_cpus(); @@ -317,7 +336,10 @@ static void test_arraymap_percpu(int task, void *data) static void test_arraymap_percpu_many_keys(void) { unsigned int nr_cpus = bpf_num_possible_cpus(); - unsigned int nr_keys = 20000; + /* nr_keys is not too large otherwise the test stresses percpu + * allocator more than anything else + */ + unsigned int nr_keys = 2000; long values[nr_cpus]; int key, fd, i; @@ -419,6 +441,7 @@ static void test_map_stress(void) { run_parallel(100, test_hashmap, NULL); run_parallel(100, test_hashmap_percpu, NULL); + run_parallel(100, test_hashmap_sizes, NULL); run_parallel(100, test_arraymap, NULL); run_parallel(100, test_arraymap_percpu, NULL); |