module loader dead code removal and cleanups v3

[Jessica Yu]

+++ Christoph Hellwig [02/02/21 13:13 +0100]:
>Hi all,
>
>this series removes support for long term unused export types and
>cleans up various loose ends in the module loader.
>
>Changes since v2:
> - clean up klp_find_object_symbol a bit
> - remove the now unused module_assert_mutex helper
>
>Changes since v1:
> - move struct symsearch to module.c
> - rework drm to not call find_module at all
> - allow RCU-sched locking for find_module
> - keep find_module as a public API instead of module_loaded
> - update a few comments and commit logs
>
>Diffstat:

Queued on modules-next (along with the updated patch 10).

Thanks everyone,

Jessica