diff options
| author | Michał Winiarski <michal.winiarski@intel.com> | 2023-10-20 11:21:59 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2024-01-05 16:28:56 +0100 |
| commit | 21822553a5f424892c12d1664b3c1235b095c6c6 (patch) | |
| tree | 4d89df57488f296603b5d67e86efef42d7bdc09d /Documentation/dev-tools | |
| parent | 32a84cfc6caf830431375c5182391284986d4066 (diff) | |
Documentation: kunit: Add clang UML coverage example
LLVM-based toolchain is using a different set of tools for coverage.
Add an example that produces output in lcov format.
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: David Gow <davidgow@google.com>
[rw: Added spelling fixes from David Gow]
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'Documentation/dev-tools')
| -rw-r--r-- | Documentation/dev-tools/kunit/running_tips.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/dev-tools/kunit/running_tips.rst b/Documentation/dev-tools/kunit/running_tips.rst index 766f9cdea0fa..221c730b9cb2 100644 --- a/Documentation/dev-tools/kunit/running_tips.rst +++ b/Documentation/dev-tools/kunit/running_tips.rst @@ -139,6 +139,17 @@ If your installed version of gcc doesn't work, you can tweak the steps: $ ./tools/testing/kunit/kunit.py run --make_options=CC=/usr/bin/gcc-6 $ lcov -t "my_kunit_tests" -o coverage.info -c -d .kunit/ --gcov-tool=/usr/bin/gcov-6 +Alternatively, LLVM-based toolchains can also be used: + +.. code-block:: bash + + # Build with LLVM and append coverage options to the current config + $ ./tools/testing/kunit/kunit.py run --make_options LLVM=1 --kunitconfig=.kunit/ --kunitconfig=tools/testing/kunit/configs/coverage_uml.config + $ llvm-profdata merge -sparse default.profraw -o default.profdata + $ llvm-cov export --format=lcov .kunit/vmlinux -instr-profile default.profdata > coverage.info + # The coverage.info file is in lcov-compatible format and it can be used to e.g. generate HTML report + $ genhtml -o /tmp/coverage_html coverage.info + Running tests manually ====================== |