From: Wen Yang <[email protected]>
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 <[email protected]>
Signed-off-by: Wen Yang <[email protected]>
---
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.
--
2.25.1
