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docs/kselftest: clarify running mainline tests on stables

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Update the document to clarifiy support for running mainline
kselftest on stable releases and the reasons for not removing
test code that can test older kernels.

Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Shuah Khan 2022-01-26 13:13:41 -07:00
parent 92d25637a3
commit dede34b2c1
1 changed files with 8 additions and 0 deletions
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Documentation/dev-tools/kselftest.rst
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@ -7,6 +7,14 @@ directory. These are intended to be small tests to exercise individual code
paths in the kernel. Tests are intended to be run after building, installing
and booting a kernel.
Kselftest from mainline can be run on older stable kernels. Running tests
from mainline offers the best coverage. Several test rings run mainline
kselftest suite on stable releases. The reason is that when a new test
gets added to test existing code to regression test a bug, we should be
able to run that test on an older kernel. Hence, it is important to keep
code that can still test an older kernel and make sure it skips the test
gracefully on newer releases.
You can find additional information on Kselftest framework, how to
write new tests using the framework on Kselftest wiki: