original_kernel/tools/testing/selftests/drivers/gpu/i915.sh

#!/bin/sh
# Runs hardware independent tests for i915 (drivers/gpu/drm/i915)

if ! /sbin/modprobe -q -r i915; then
	echo "drivers/gpu/i915: [SKIP]"
	exit 77
fi

if /sbin/modprobe -q i915 mock_selftests=-1; then
	/sbin/modprobe -q -r i915
	echo "drivers/gpu/i915: ok"
else
	echo "drivers/gpu/i915: [FAIL]"
	exit 1
fi
kselftests: Exercise hw-independent mock tests for i915.ko Although being a GPU driver most functionality of i915.ko depends upon real hardware, many of its internal interfaces can be "mocked" and so tested independently of any hardware. Expanding the test coverage is not only useful for i915.ko, but should provide some integration tests for core infrastructure as well. Loading i915.ko with mock_selftests=-1 will cause it to execute its mock tests then fail with -ENOTTY. If the driver is already loaded and bound to hardware, it requires a few more steps to unbind, and so the simple preliminary modprobe -r will fail. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Shuah Khan <shuah@kernel.org> Cc: linux-kselftest@vger.kernel.org Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> 2016-12-07 21:58:19 +08:00			`#!/bin/sh`
			`# Runs hardware independent tests for i915 (drivers/gpu/drm/i915)`

			`if ! /sbin/modprobe -q -r i915; then`
			`echo "drivers/gpu/i915: [SKIP]"`
			`exit 77`
			`fi`

			`if /sbin/modprobe -q i915 mock_selftests=-1; then`
drm/i915: Provide a hook for selftests Some pieces of code are independent of hardware but are very tricky to exercise through the normal userspace ABI or via debugfs hooks. Being able to create mock unit tests and execute them through CI is vital. Start by adding a central point where we can execute unit tests and a parameter to enable them. This is disabled by default as the expectation is that these tests will occasionally explode. To facilitate integration with igt, any parameter beginning with i915.igt__ is interpreted as a subtest executable independently via igt/drv_selftest. Two classes of selftests are recognised: mock unit tests and integration tests. Mock unit tests are run as soon as the module is loaded, before the device is probed. At that point there is no driver instantiated and all hw interactions must be "mocked". This is very useful for writing universal tests to exercise code not typically run on a broad range of architectures. Alternatively, you can hook into the live selftests and run when the device has been instantiated - hw interactions are real. v2: Add a macro for compiling conditional code for mock objects inside real objects. v3: Differentiate between mock unit tests and late integration test. v4: List the tests in natural order, use igt to sort after modparam. v5: s/late/live/ v6: s/unsigned long/unsigned int/ v7: Use igt_ prefixes for long helpers. v8: Deobfuscate macros overriding functions, stop using -I$(src) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-1-chris@chris-wilson.co.uk 2017-02-14 01:15:12 +08:00			`/sbin/modprobe -q -r i915`
kselftests: Exercise hw-independent mock tests for i915.ko Although being a GPU driver most functionality of i915.ko depends upon real hardware, many of its internal interfaces can be "mocked" and so tested independently of any hardware. Expanding the test coverage is not only useful for i915.ko, but should provide some integration tests for core infrastructure as well. Loading i915.ko with mock_selftests=-1 will cause it to execute its mock tests then fail with -ENOTTY. If the driver is already loaded and bound to hardware, it requires a few more steps to unbind, and so the simple preliminary modprobe -r will fail. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Shuah Khan <shuah@kernel.org> Cc: linux-kselftest@vger.kernel.org Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> 2016-12-07 21:58:19 +08:00			`echo "drivers/gpu/i915: ok"`
			`else`
			`echo "drivers/gpu/i915: [FAIL]"`
			`exit 1`
			`fi`