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

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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@xxxxxxxxxx>
---
 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"
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




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