On Wed, Jul 18, 2018 at 07:33:58PM +0200, Claudio wrote:
This commit adds tests for some of the core functionalities of cgroups v2.
The commit adds tests for some core principles of croup V2 API:
test_cgcore_internal_process_constraint
Tests internal process constraint. You can't add a pid to a domain parent if a controller is enabled.
test_cgcore_top_down_constraint_enable
Tests that you can't enable a controller on a child if it's not enabled on the parent.
test_cgcore_top_down_constraint_disable
Tests that you can't disable a controller on a parent if it's enabled in a child.
test_cgcore_no_internal_process_constraint_on_threads
Tests that there's no internal process constrain on threaded cgroups. You can add threads/processes on a parent with a controller enabled.
test_cgcore_parent_becomes_threaded
Tests that when a child becomes threaded the parent type becomes domain threaded.
test_cgcore_invalid_domain
In a situation like:
A (domain threaded) - B (threaded) - C (domain)
it tests that C can't be used until it is turned into a threaded cgroup. The "cgroup.type" file will report "domain (invalid)" in these cases. Operations which fail due to invalid topology use EOPNOTSUPP as the errno.
test_cgcore_populated
In a situation like:
A(0) - B(0) - C(1) \ D(0)
It tests that A, B and C's "populated" fields would be 1 while D's 0. It tests that after the one process in C is moved to root, A,B and C's "populated" fields would flip to "0" and file modified events will be generated on the "cgroup.events" files of both cgroups.
Signed-off-by: Claudio Zumbo claudioz@fb.com Cc: Shuah Khan shuah@kernel.org Cc: Roman Gushchin guro@fb.com Cc: Tejun Heo tj@kernel.org Cc: kernel-team@fb.com
Looks good to me!
Reviewed-by: Roman Gushchin guro@fb.com
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