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author | Joe Lawrence <joe.lawrence@redhat.com> | 2019-01-09 15:43:29 +0300 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2019-01-11 22:51:24 +0300 |
commit | a2818ee4dce575b299d8a7f46b393bc2b02ef1f4 (patch) | |
tree | 0f616177ebf9e8d2f00023f8db89a89374e65c94 /tools/testing/selftests/livepatch/README | |
parent | d67a53720966f2ef5be5c8f238d13512b8260868 (diff) | |
download | linux-a2818ee4dce575b299d8a7f46b393bc2b02ef1f4.tar.xz |
selftests/livepatch: introduce tests
Add a few livepatch modules and simple target modules that the included
regression suite can run tests against:
- basic livepatching (multiple patches, atomic replace)
- pre/post (un)patch callbacks
- shadow variable API
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Tested-by: Miroslav Benes <mbenes@suse.cz>
Tested-by: Alice Ferrazzi <alice.ferrazzi@gmail.com>
Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'tools/testing/selftests/livepatch/README')
-rw-r--r-- | tools/testing/selftests/livepatch/README | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tools/testing/selftests/livepatch/README b/tools/testing/selftests/livepatch/README new file mode 100644 index 000000000000..b73cd0e2dd51 --- /dev/null +++ b/tools/testing/selftests/livepatch/README @@ -0,0 +1,43 @@ +==================== +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 clear +the message buffer between individual tests.) + + +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 set_dynamic_debug() 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.) |