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- ====================
- Livepatch Self Tests
- ====================
- This is a small set of sanity tests for the kernel livepatching.
- The test suite loads and unloads several test kernel modules to verify
- livepatch behavior. Debug information is logged to the kernel's message
- buffer and parsed for expected messages. (Note: the tests will compare
- the message buffer for only the duration of each individual test.)
- Config
- ------
- Set these config options and their prerequisites:
- CONFIG_LIVEPATCH=y
- CONFIG_TEST_LIVEPATCH=m
- Running the tests
- -----------------
- Test kernel modules are built as part of lib/ (make modules) and need to
- be installed (make modules_install) as the test scripts will modprobe
- them.
- To run the livepatch selftests, from the top of the kernel source tree:
- % make -C tools/testing/selftests TARGETS=livepatch run_tests
- Adding tests
- ------------
- See the common functions.sh file for the existing collection of utility
- functions, most importantly setup_config(), start_test() and
- check_result(). The latter function greps the kernel's ring buffer for
- "livepatch:" and "test_klp" strings, so tests be sure to include one of
- those strings for result comparison. Other utility functions include
- general module loading and livepatch loading helpers (waiting for patch
- transitions, sysfs entries, etc.)
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