diff options
| author | Pasha Tatashin <pasha.tatashin@soleen.com> | 2025-12-18 10:57:52 -0500 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-02-08 00:13:33 -0800 |
| commit | f653ff7af96951faa69c68665d44bed80702544f (patch) | |
| tree | b7ca8848efbc857ec9fc59136a82ae9de1faf048 /kernel | |
| parent | cab056f2aae7250af50e503b81a80dfc567a1acd (diff) | |
tests/liveupdate: add in-kernel liveupdate test
Introduce an in-kernel test module to validate the core logic of the Live
Update Orchestrator's File-Lifecycle-Bound feature. This provides a
low-level, controlled environment to test FLB registration and callback
invocation without requiring userspace interaction or actual kexec
reboots.
The test is enabled by the CONFIG_LIVEUPDATE_TEST Kconfig option.
Link: https://lkml.kernel.org/r/20251218155752.3045808-6-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Alexander Graf <graf@amazon.com>
Cc: David Gow <davidgow@google.com>
Cc: David Matlack <dmatlack@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kees Cook <kees@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Samiullah Khawaja <skhawaja@google.com>
Cc: Tamir Duberstein <tamird@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/liveupdate/luo_file.c | 8 | ||||
| -rw-r--r-- | kernel/liveupdate/luo_internal.h | 8 |
2 files changed, 15 insertions, 1 deletions
diff --git a/kernel/liveupdate/luo_file.c b/kernel/liveupdate/luo_file.c index cade273c50c9..35d2a8b1a0df 100644 --- a/kernel/liveupdate/luo_file.c +++ b/kernel/liveupdate/luo_file.c @@ -864,6 +864,8 @@ int liveupdate_register_file_handler(struct liveupdate_file_handler *fh) list_add_tail(&ACCESS_PRIVATE(fh, list), &luo_file_handler_list); luo_session_resume(); + liveupdate_test_register(fh); + return 0; err_resume: @@ -895,8 +897,10 @@ int liveupdate_unregister_file_handler(struct liveupdate_file_handler *fh) if (!liveupdate_enabled()) return -EOPNOTSUPP; + liveupdate_test_unregister(fh); + if (!luo_session_quiesce()) - return -EBUSY; + goto err_register; if (!list_empty(&ACCESS_PRIVATE(fh, flb_list))) goto err_resume; @@ -909,5 +913,7 @@ int liveupdate_unregister_file_handler(struct liveupdate_file_handler *fh) err_resume: luo_session_resume(); +err_register: + liveupdate_test_register(fh); return err; } diff --git a/kernel/liveupdate/luo_internal.h b/kernel/liveupdate/luo_internal.h index 99db13d99530..8083d8739b09 100644 --- a/kernel/liveupdate/luo_internal.h +++ b/kernel/liveupdate/luo_internal.h @@ -107,4 +107,12 @@ int __init luo_flb_setup_outgoing(void *fdt); int __init luo_flb_setup_incoming(void *fdt); void luo_flb_serialize(void); +#ifdef CONFIG_LIVEUPDATE_TEST +void liveupdate_test_register(struct liveupdate_file_handler *fh); +void liveupdate_test_unregister(struct liveupdate_file_handler *fh); +#else +static inline void liveupdate_test_register(struct liveupdate_file_handler *fh) { } +static inline void liveupdate_test_unregister(struct liveupdate_file_handler *fh) { } +#endif + #endif /* _LINUX_LUO_INTERNAL_H */ |