[PATCH] module: add stub for within_module

[Tri Vo]

Provide a stub for within_module() when CONFIG_MODULES is not set. This
is needed to build CONFIG_GCOV_KERNEL.

Fixes: 8c3d220cb6b5 ("gcov: clang support")
Suggested-by: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Link: https://marc.info/?l=linux-mm&m=155384681109231&w=2
Signed-off-by: Tri Vo <trong@xxxxxxxxxxx>
---
 include/linux/module.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/module.h b/include/linux/module.h
index 5bf5dcd91009..47190ebb70bf 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -709,6 +709,11 @@ static inline bool is_module_text_address(unsigned long addr)
 	return false;
 }
 
+static inline bool within_module(unsigned long addr, const struct module *mod)
+{
+	return false;
+}
+
 /* Get/put a kernel symbol (calls should be symmetric) */
 #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); })
 #define symbol_put(x) do { } while (0)
-- 
2.21.0.392.gf8f6787159e-goog