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: Frank Rowand <frowand.list@xxxxxxxxx> --- drivers/of/Kconfig | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index 80b5fd44ab1c..644386833a7b 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -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" -- Frank Rowand <frowand.list@xxxxxxxxx>
