From 89a6f8102948afa5d0851a6eebf5d7b166a42a6f Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Tue, 15 Sep 2026 03:13:36 +0800 Subject: [PATCH] rv: Export rv_register_reactor() and rv_unregister_reactor() rv_react() is exported to modules, but the reactor registration helpers are not. Export them with EXPORT_SYMBOL_GPL() so reactor modules and the tristate KUnit test module can register and unregister reactors without hitting undefined symbol errors at link time(modpost). Commit 3d3800b4f7f4 ("rv: Remove reactor's reference counter") noted that module-based reactors, if supported, should be pinned with try_module_get()/module_put() to prevent unloading under an active monitor. This patch does not add that support. The only in-tree module consumer, the tristate KUnit reactor test module, registers and unregisters its reactor within a controlled test lifecycle. The actual pinning is left to a follow-up series that adds support for loadable-module reactors. Reviewed-by: Gabriele Monaco Signed-off-by: Wen Yang Link: https://lore.kernel.org/r/94b7ec120a92b9368541ac050601e66be8fe653a.1789412799.git.wen.yang@linux.dev Signed-off-by: Gabriele Monaco --- kernel/trace/rv/rv_reactors.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/trace/rv/rv_reactors.c b/kernel/trace/rv/rv_reactors.c index ff7d478227c3..8e57a95d446b 100644 --- a/kernel/trace/rv/rv_reactors.c +++ b/kernel/trace/rv/rv_reactors.c @@ -314,6 +314,7 @@ int rv_register_reactor(struct rv_reactor *reactor) guard(mutex)(&rv_interface_lock); return __rv_register_reactor(reactor); } +EXPORT_SYMBOL_GPL(rv_register_reactor); /** * rv_unregister_reactor - unregister a rv reactor. @@ -327,6 +328,7 @@ int rv_unregister_reactor(struct rv_reactor *reactor) list_del(&reactor->list); return 0; } +EXPORT_SYMBOL_GPL(rv_unregister_reactor); /* * reacting_on interface.