diff options
| -rw-r--r-- | tools/testing/selftests/cgroup/test_freezer.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/tools/testing/selftests/cgroup/test_freezer.c b/tools/testing/selftests/cgroup/test_freezer.c index 8219a30853d2..0fc1b6d4b0f9 100644 --- a/tools/testing/selftests/cgroup/test_freezer.c +++ b/tools/testing/selftests/cgroup/test_freezer.c @@ -448,6 +448,59 @@ cleanup: } /* + * The test creates a cgroups and freezes it. Then it creates a child cgroup + * and populates it with a task. After that it checks that the child cgroup + * is frozen and the parent cgroup remains frozen too. + */ +static int test_cgfreezer_mkdir(const char *root) +{ + int ret = KSFT_FAIL; + char *parent, *child = NULL; + int pid; + + parent = cg_name(root, "cg_test_mkdir_A"); + if (!parent) + goto cleanup; + + child = cg_name(parent, "cg_test_mkdir_B"); + if (!child) + goto cleanup; + + if (cg_create(parent)) + goto cleanup; + + if (cg_freeze_wait(parent, true)) + goto cleanup; + + if (cg_create(child)) + goto cleanup; + + pid = cg_run_nowait(child, child_fn, NULL); + if (pid < 0) + goto cleanup; + + if (cg_wait_for_proc_count(child, 1)) + goto cleanup; + + if (cg_check_frozen(child, true)) + goto cleanup; + + if (cg_check_frozen(parent, true)) + goto cleanup; + + ret = KSFT_PASS; + +cleanup: + if (child) + cg_destroy(child); + free(child); + if (parent) + cg_destroy(parent); + free(parent); + return ret; +} + +/* * The test creates two nested cgroups, freezes the parent * and removes the child. Then it checks that the parent cgroup * remains frozen and it's possible to create a new child @@ -815,6 +868,7 @@ struct cgfreezer_test { T(test_cgfreezer_simple), T(test_cgfreezer_tree), T(test_cgfreezer_forkbomb), + T(test_cgfreezer_mkdir), T(test_cgfreezer_rmdir), T(test_cgfreezer_migrate), T(test_cgfreezer_ptrace), |