selftests/bpf: test_progs: add test__join_cgroup helper

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test__join_cgroup() combines the following operations that usually
go hand in hand and returns cgroup fd:

  * setup cgroup environment (make sure cgroupfs is mounted)
  * mkdir cgroup
  * join cgroup

It also marks a test as a "cgroup cleanup needed" and removes cgroup
state after the test is done.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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This commit is contained in:

Stanislav Fomichev 2019-09-04 09:25:04 -07:00 • committed by Alexei Starovoitov

parent 618916a4bf

commit 88dadc6327

3 changed files with 41 additions and 2 deletions

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4

tools/testing/selftests/bpf/Makefile

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38

tools/testing/selftests/bpf/test_progs.c

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1

tools/testing/selftests/bpf/test_progs.h

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