linux-kernel - [PATCH 0/2] Update kunit doc and tool with tips to build errors

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Message-ID: <cover.1745965121.git.skhan@linuxfoundation.org>
Date: Tue, 29 Apr 2025 16:27:10 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: brendan.higgins@...ux.dev,
	davidgow@...gle.com,
	rmoar@...gle.com,
	corbet@....net
Cc: Shuah Khan <skhan@...uxfoundation.org>,
	linux-kselftest@...r.kernel.org,
	kunit-dev@...glegroups.com,
	workflows@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] Update kunit doc and tool with tips to build errors

kunit kernel build could fail if there are ny build artifacts from a
prior kernel build. These can be hard to debug if the build artifact
happens to be generated header file. It took me a while to debug kunit
build fail on ARCH=x86_64 in a tree which had a generated header file
arch/x86/realmode/rm/pasyms.h

make ARCH=um mrproper will not clean the tree. It is necessary to run
make ARCH=x86_64 mrproper

Example work-flow that could lead to this:

        make allmodconfig (x86_64)
        make
        ./tools/testing/kunit/kunit.py run

Add this to the documentation and kunit.py build help message.

Shuah Khan (2):
  doc: kunit: add information about cleaning source trees
  kunit: add tips to clean source tree to build help message

 Documentation/dev-tools/kunit/start.rst | 12 ++++++++++++
 tools/testing/kunit/kunit.py            |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)

-- 
2.47.2