diff options
author | Roman Gushchin <guro@fb.com> | 2019-04-19 10:03:06 -0700 |
---|---|---|
committer | Tejun Heo <tj@kernel.org> | 2019-04-19 11:26:49 -0700 |
commit | 5313bfe425c8aadc582356f575100f3235a6d638 (patch) | |
tree | 44264b80f544cdd9fe2379dd7641d8340b6c681b /net/9p | |
parent | kselftests: cgroup: don't fail on cg_kill_all() error in cg_destroy() (diff) | |
download | linux-dev-5313bfe425c8aadc582356f575100f3235a6d638.tar.xz linux-dev-5313bfe425c8aadc582356f575100f3235a6d638.zip |
kselftests: cgroup: add freezer controller self-tests
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
Diffstat (limited to 'net/9p')
0 files changed, 0 insertions, 0 deletions