Hi all, This patch was motivated by the increasing corner cases in the livepatch code. These tests don't cover anywhere near all of them, but were mostly already written up as demonstrations / documentation of the livepatch callback functionality. Converting them into a test rig didn't take long.
So the testing methodology is a little hokey as it relies on dmesg order and filtering. That said, it's already been used to verify livepatch callback for "livepatch: Atomic replace feature" patchset. Any suggestions for better testing would be welcome. I didn't get to the shadow variable testing script yet. I figured that I'd share the current state before I got too far along in writing tests. Suggestions for additional tests and test categories welcome as well. To try out the tests, configure with: CONFIG_TEST_LIVEPATCH=m Build kernel, modules, install, etc. then reboot and kick off: % make -C tools/testing/selftests TARGETS=livepatch run_tests The tests expect to on top of v10+ of the "livepatch: Atomic replace feature" series and take ~2.5 minutes to complete. rfc changes: - SPDX-License-Identifiers - Moved livepatch test modules into lib/livepatch - Renamed livepatch.sh (filename suffix) - Reduced between-test delay time - Split off common functions.sh file - Split into separate livepatch, callbacks, and shadow-vars scrips - Gave the tests short descriptions instead of TEST1, TEST2, etc. Joe Lawrence (1): selftests/livepatch: introduce tests lib/Kconfig.debug | 12 + lib/Makefile | 2 + lib/livepatch/Makefile | 18 + lib/livepatch/test_klp_atomic_replace.c | 69 +++ lib/livepatch/test_klp_callbacks_busy.c | 43 ++ lib/livepatch/test_klp_callbacks_demo.c | 132 ++++++ lib/livepatch/test_klp_callbacks_demo2.c | 104 ++++ lib/livepatch/test_klp_callbacks_mod.c | 24 + lib/livepatch/test_klp_livepatch.c | 62 +++ tools/testing/selftests/Makefile | 1 + tools/testing/selftests/livepatch/Makefile | 8 + tools/testing/selftests/livepatch/config | 1 + tools/testing/selftests/livepatch/functions.sh | 202 ++++++++ .../testing/selftests/livepatch/test-callbacks.sh | 526 +++++++++++++++++++++ .../testing/selftests/livepatch/test-livepatch.sh | 177 +++++++ .../selftests/livepatch/test-shadow-vars.sh | 13 + 16 files changed, 1394 insertions(+) create mode 100644 lib/livepatch/Makefile create mode 100644 lib/livepatch/test_klp_atomic_replace.c create mode 100644 lib/livepatch/test_klp_callbacks_busy.c create mode 100644 lib/livepatch/test_klp_callbacks_demo.c create mode 100644 lib/livepatch/test_klp_callbacks_demo2.c create mode 100644 lib/livepatch/test_klp_callbacks_mod.c create mode 100644 lib/livepatch/test_klp_livepatch.c create mode 100644 tools/testing/selftests/livepatch/Makefile create mode 100644 tools/testing/selftests/livepatch/config create mode 100644 tools/testing/selftests/livepatch/functions.sh create mode 100755 tools/testing/selftests/livepatch/test-callbacks.sh create mode 100755 tools/testing/selftests/livepatch/test-livepatch.sh create mode 100755 tools/testing/selftests/livepatch/test-shadow-vars.sh -- 1.8.3.1
