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5313bfe425
This patch implements 9 tests for the freezer controller for cgroup v2: 1) a simple test, which aims to freeze and unfreeze a cgroup with 100 processes 2) a more complicated tree test, which creates a hierarchy of cgroups, puts some processes in some cgroups, and tries to freeze and unfreeze different parts of the subtree 3) a forkbomb test: the test aims to freeze a forkbomb running in a cgroup, kill all tasks in the cgroup and remove the cgroup without the unfreezing. 4) rmdir test: the test creates two nested cgroups, freezes the parent one, checks that the child can be successfully removed, and a new child can be created 5) migration tests: the test checks migration of a task between frozen cgroups: from a frozen to a running, from a running to a frozen, and from a frozen to a frozen. 6) ptrace test: the test checks that it's possible to attach to a process in a frozen cgroup, get some information and detach, and the cgroup will remain frozen. 7) stopped test: the test checks that it's possible to freeze a cgroup with a stopped task 8) ptraced test: the test checks that it's possible to freeze a cgroup with a ptraced task 9) vfork test: the test checks that it's possible to freeze a cgroup with a parent process waiting for the child process in vfork() Expected output: $ ./test_freezer ok 1 test_cgfreezer_simple ok 2 test_cgfreezer_tree ok 3 test_cgfreezer_forkbomb ok 4 test_cgrreezer_rmdir ok 5 test_cgfreezer_migrate ok 6 test_cgfreezer_ptrace ok 7 test_cgfreezer_stopped ok 8 test_cgfreezer_ptraced ok 9 test_cgfreezer_vfork Signed-off-by: Roman Gushchin <guro@fb.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: kernel-team@fb.com Cc: linux-kselftest@vger.kernel.org |
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| .. | ||
| android | ||
| bpf | ||
| breakpoints | ||
| capabilities | ||
| cgroup | ||
| cpu-hotplug | ||
| cpufreq | ||
| drivers | ||
| efivarfs | ||
| exec | ||
| filesystems | ||
| firmware | ||
| ftrace | ||
| futex | ||
| gpio | ||
| ia64 | ||
| ima | ||
| intel_pstate | ||
| ipc | ||
| ir | ||
| kcmp | ||
| kmod | ||
| kvm | ||
| lib | ||
| livepatch | ||
| locking | ||
| media_tests | ||
| membarrier | ||
| memfd | ||
| memory-hotplug | ||
| mount | ||
| mqueue | ||
| net | ||
| netfilter | ||
| networking/timestamping | ||
| nsfs | ||
| ntb | ||
| pidfd | ||
| powerpc | ||
| prctl | ||
| proc | ||
| pstore | ||
| ptp | ||
| ptrace | ||
| rcutorture | ||
| rseq | ||
| rtc | ||
| safesetid | ||
| seccomp | ||
| sigaltstack | ||
| size | ||
| sparc64 | ||
| splice | ||
| static_keys | ||
| sync | ||
| sysctl | ||
| tc-testing | ||
| timers | ||
| tmpfs | ||
| tpm2 | ||
| uevent | ||
| user | ||
| vDSO | ||
| vm | ||
| watchdog | ||
| x86 | ||
| zram | ||
| .gitignore | ||
| gen_kselftest_tar.sh | ||
| kselftest.h | ||
| kselftest_harness.h | ||
| kselftest_install.sh | ||
| lib.mk | ||
| Makefile | ||