I was debugging an issue that a livepatch appears to be attached, but actually not. It turns out that there is a mismatch in module name (abc-xyz vs. abc_xyz), klp_find_object_module failed to find the module. Add a sysfs entry for each klp_object, so that it is easier to debug such issues. Changes v2 => v3: 1. Improve selftest. (Petr Mladek and Joe Lawrence) Changes v1 => v2: 1. Add selftest. (Petr Mladek) 2. Update documentation. (Petr Mladek) 3. Use sysfs_emit. (Petr Mladek) Song Liu (2): livepatch: add sysfs entry "patched" for each klp_object selftests/livepatch: add sysfs test .../ABI/testing/sysfs-kernel-livepatch | 8 ++ kernel/livepatch/core.c | 18 ++++ tools/testing/selftests/livepatch/Makefile | 3 +- .../testing/selftests/livepatch/functions.sh | 34 ++++++++ .../testing/selftests/livepatch/test-sysfs.sh | 86 +++++++++++++++++++ 5 files changed, 148 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/livepatch/test-sysfs.sh -- 2.30.2
