[PATCH v3 0/2] add sysfs entry "patched" for each klp_object

Song Liu
2022-09-02T20:52:33Z

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

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2.30.2