Commit f381b31a authored by Frank Rowand's avatar Frank Rowand Committed by Rob Herring
Browse files

of: update kconfig unittest help 



Add more information about the impact the of unittests have on the
live devicetree and why the tests should only be enabled for developer
kernels.

Add information about processing the test output such that the
results are more complete and comprehendable.

Signed-off-by: default avatarFrank Rowand <frowand.list@gmail.com>
Link: https://lore.kernel.org/r/20230213185702.395776-4-frowand.list@gmail.com


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 568a10bf

drivers/of/Kconfig

+13 −1
Original line number Diff line number Diff line
@@ -23,7 +23,19 @@ config OF_UNITTEST 
	  that are executed once at boot time, and the results dumped to the

	  console.



	  If unsure, say N here, but this option is safe to enable.

	  This option should only be enabled for a development kernel. The tests

	  will taint the kernel with TAINT_TEST. The tests will cause ERROR and

	  WARNING messages to print on the console. The tests will cause stack

	  traces to print on the console.  It is possible that the tests will

	  leave the devicetree in a corrupted state.



	  The unittest output will be verbose.  Copy the output to a file

	  via capturing the console output or via the dmesg command.  Process

	  this file with scripts/dtc/of_unittest_expect to reduce the

	  verbosity, test whether expected output is present, and to

	  summarize the results.



	  If unsure, say N here. This option is not safe to enable.



config OF_ALL_DTBS

	bool "Build all Device Tree Blobs"