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Subject[PATCH] Add livepatch kselftests
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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

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