[PATCHv6 30/36] selftest/timens: Add Time Namespace test for supported clocks

[shuah]

Hi Dmitry,

Thanks for the patch.

On 8/15/19 10:38 AM, Dmitry Safonov wrote:
> A test to check that all supported clocks work on host and inside
> a new time namespace. Use both ways to get time: through VDSO and
> by entering the kernel with implicit syscall.
> 
> Introduce a new timens directory in selftests framework for
> the next timens tests.
> 
> Co-developed-by: Andrei Vagin <avagin at openvz.org>
> Signed-off-by: Andrei Vagin <avagin at openvz.org>
> Signed-off-by: Dmitry Safonov <dima at arista.com>
> ---
>   tools/testing/selftests/Makefile          |   1 +
>   tools/testing/selftests/timens/.gitignore |   1 +
>   tools/testing/selftests/timens/Makefile   |   5 +
>   tools/testing/selftests/timens/config     |   1 +
>   tools/testing/selftests/timens/log.h      |  26 +++
>   tools/testing/selftests/timens/timens.c   | 185 ++++++++++++++++++++++
>   tools/testing/selftests/timens/timens.h   |  63 ++++++++
>   7 files changed, 282 insertions(+)
>   create mode 100644 tools/testing/selftests/timens/.gitignore
>   create mode 100644 tools/testing/selftests/timens/Makefile
>   create mode 100644 tools/testing/selftests/timens/config
>   create mode 100644 tools/testing/selftests/timens/log.h
>   create mode 100644 tools/testing/selftests/timens/timens.c
>   create mode 100644 tools/testing/selftests/timens/timens.h
> 
> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
> index 25b43a8c2b15..6fc63b84a857 100644
> --- a/tools/testing/selftests/Makefile
> +++ b/tools/testing/selftests/Makefile
> @@ -47,6 +47,7 @@ TARGETS += splice
>   TARGETS += static_keys
>   TARGETS += sync
>   TARGETS += sysctl
> +TARGETS += timens

How long does this test run for? Does this test need to be run
as root? If yes, please add a root check and skip the test.

What does the test output looks like for skip and pass/fail cases?

thanks,
-- Shuah