module: move CONFIG_UNUSED_SYMBOLS to the sub-menu of MODULES

When CONFIG_MODULES is disabled, CONFIG_UNUSED_SYMBOLS is pointless,
thus it should be invisible.

Instead of adding "depends on MODULES", I moved it to the sub-menu
"Enable loadable module support", which is a better fit. I put it
close to TRIM_UNUSED_KSYMS because it depends on !UNUSED_SYMBOLS.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 6f0ec679b02d..11876e415db3 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -2130,6 +2130,22 @@ config MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
 
           If unsure, say N.
 
+config UNUSED_SYMBOLS
+        bool "Enable unused/obsolete exported symbols"
+        default y if X86
+        help
+          Unused but exported symbols make the kernel needlessly bigger.  For
+          that reason most of these unused exports will soon be removed.  This
+          option is provided temporarily to provide a transition period in case
+          some external kernel module needs one of these symbols anyway. If you
+          encounter such a case in your module, consider if you are actually
+          using the right API.  (rationale: since nobody in the kernel is using
+          this in a module, there is a pretty good chance it's actually the
+          wrong interface to use).  If you really need the symbol, please send a
+          mail to the linux kernel mailing list mentioning the symbol and why
+          you really need it, and what the merge plan to the mainline kernel for
+          your module is.
+
 config TRIM_UNUSED_KSYMS
         bool "Trim unused exported kernel symbols"
         depends on !UNUSED_SYMBOLS