Re: [PATCH 4/5] nitro_enclaves: test: Use kunit_test_suite() macro

["Paraschiv, Andra-Irina" <andraprs@amazon.com>]

On 18.06.2022 12:03, David Gow wrote:
> 
> The kunit_test_suite() macro previously conflicted with module_init,
> making it unsuitable for use in the nitro_enclaves test. Now that it's
> fixed, we can use it instead of a custom call into internal KUnit
> functions to run the test.
> 
> As a side-effect, this means that the test results are properly included
> with other suites when built-in. To celebrate, enable the test by
> default when KUNIT_ALL_TESTS is set (and NITRO_ENCLAVES enabled).
> 
> The nitro_enclave tests can now be run via kunit_tool with:
>          ./tools/testing/kunit/kunit.py run --arch=x86_64 \
>          --kconfig_add CONFIG_PCI=y --kconfig_add CONFIG_SMP=y \
>          --kconfig_add CONFIG_HOTPLUG_CPU=y \
>          --kconfig_add CONFIG_VIRT_DRIVERS=y \
>          --kconfig_add CONFIG_NITRO_ENCLAVES=y \
>          'ne_misc_dev_test'
> 
> (This is a pretty long command, so it may be worth adding a .kunitconfig
> file at some point, instead.)
> 
> Signed-off-by: David Gow <davidgow@google.com>

Thank you, David, for the KUnit update and for this patch.

> ---
>   drivers/thunderbolt/Kconfig                   |  5 ++--
>   drivers/virt/nitro_enclaves/Kconfig           |  5 ++--
>   drivers/virt/nitro_enclaves/ne_misc_dev.c     | 27 -------------------
>   .../virt/nitro_enclaves/ne_misc_dev_test.c    |  5 +---
>   4 files changed, 7 insertions(+), 35 deletions(-)
> 
> diff --git a/drivers/thunderbolt/Kconfig b/drivers/thunderbolt/Kconfig
> index 4bfec8a28064..2a063d344b94 100644
> --- a/drivers/thunderbolt/Kconfig
> +++ b/drivers/thunderbolt/Kconfig
> @@ -28,8 +28,9 @@ config USB4_DEBUGFS_WRITE
>            this for production systems or distro kernels.
> 
>   config USB4_KUNIT_TEST
> -       bool "KUnit tests"
> -       depends on KUNIT=y
> +       bool "KUnit tests" if !KUNIT_ALL_TESTS
> +       depends on KUNIT
> +       default KUNIT_ALL_TESTS
> 
>   config USB4_DMA_TEST
>          tristate "DMA traffic test driver"

This needs to be included in the previous patch instead (patch 3/5, for 
thunderbolt).

> diff --git a/drivers/virt/nitro_enclaves/Kconfig b/drivers/virt/nitro_enclaves/Kconfig
> index 2d3d98158121..ce91add81401 100644
> --- a/drivers/virt/nitro_enclaves/Kconfig
> +++ b/drivers/virt/nitro_enclaves/Kconfig
> @@ -16,8 +16,9 @@ config NITRO_ENCLAVES
>            The module will be called nitro_enclaves.
> 
>   config NITRO_ENCLAVES_MISC_DEV_TEST
> -       bool "Tests for the misc device functionality of the Nitro Enclaves"
> -       depends on NITRO_ENCLAVES && KUNIT=y
> +       bool "Tests for the misc device functionality of the Nitro Enclaves" if !KUNIT_ALL_TESTS
> +       depends on NITRO_ENCLAVES && KUNIT
> +       default KUNIT_ALL_TESTS
>          help
>            Enable KUnit tests for the misc device functionality of the Nitro
>            Enclaves. Select this option only if you will boot the kernel for
> diff --git a/drivers/virt/nitro_enclaves/ne_misc_dev.c b/drivers/virt/nitro_enclaves/ne_misc_dev.c
> index 20c881b6a4b6..241b94f62e56 100644
> --- a/drivers/virt/nitro_enclaves/ne_misc_dev.c
> +++ b/drivers/virt/nitro_enclaves/ne_misc_dev.c
> @@ -1759,35 +1759,10 @@ static long ne_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> 
>   #if defined(CONFIG_NITRO_ENCLAVES_MISC_DEV_TEST)
>   #include "ne_misc_dev_test.c"
> -
> -static inline int ne_misc_dev_test_init(void)
> -{
> -       return __kunit_test_suites_init(ne_misc_dev_test_suites);
> -}
> -
> -static inline void ne_misc_dev_test_exit(void)
> -{
> -       __kunit_test_suites_exit(ne_misc_dev_test_suites);
> -}
> -#else
> -static inline int ne_misc_dev_test_init(void)
> -{
> -       return 0;
> -}
> -
> -static inline void ne_misc_dev_test_exit(void)
> -{
> -}
>   #endif
> 
>   static int __init ne_init(void)
>   {
> -       int rc = 0;
> -
> -       rc = ne_misc_dev_test_init();
> -       if (rc < 0)
> -               return rc;
> -
>          mutex_init(&ne_cpu_pool.mutex);
> 
>          return pci_register_driver(&ne_pci_driver);
> @@ -1798,8 +1773,6 @@ static void __exit ne_exit(void)
>          pci_unregister_driver(&ne_pci_driver);
> 
>          ne_teardown_cpu_pool();
> -
> -       ne_misc_dev_test_exit();
>   }
> 
>   module_init(ne_init);
> diff --git a/drivers/virt/nitro_enclaves/ne_misc_dev_test.c b/drivers/virt/nitro_enclaves/ne_misc_dev_test.c
> index 265797bed0ea..74df43b925be 100644
> --- a/drivers/virt/nitro_enclaves/ne_misc_dev_test.c
> +++ b/drivers/virt/nitro_enclaves/ne_misc_dev_test.c
> @@ -151,7 +151,4 @@ static struct kunit_suite ne_misc_dev_test_suite = {
>          .test_cases = ne_misc_dev_test_cases,
>   };
> 
> -static struct kunit_suite *ne_misc_dev_test_suites[] = {
> -       &ne_misc_dev_test_suite,
> -       NULL
> -};
> +kunit_test_suite(ne_misc_dev_test_suite);
> --
> 2.36.1.476.g0c4daa206d-goog
> 

Other than that, looks good to me.

Thank you.

Andra



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