From: Dan Murphy <dmurphy@ti.com>
Date: Fri, 24 Feb 2017 08:41:49 -0600
Subject: lockdep: Fix compilation error for !CONFIG_MODULES and !CONFIG_SMP
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git
Git-commit: cdc727c34042a8660bc9b4832edfb4f6b0749965
Patch-mainline: Queued in subsystem maintainer repository
References: SLE Realtime Extension

When CONFIG_MODULES is not set then it fails to compile in lockdep:

|kernel/locking/lockdep.c: In function 'look_up_lock_class':
|kernel/locking/lockdep.c:684:12: error: implicit declaration of function
| '__is_module_percpu_address' [-Werror=implicit-function-declaration]

If CONFIG_MODULES is set but CONFIG_SMP is not, then it compiles but
fails link at the end:

|kernel/locking/lockdep.c:684: undefined reference to `__is_module_percpu_address'
|kernel/built-in.o:(.debug_addr+0x1e674): undefined reference to `__is_module_percpu_address'

This patch adds the function for both cases.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
[bigeasy: merge the two patches from Dan into one, adapt changelog]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Mike Galbraith <mgalbraith@suse.de>
---
 include/linux/module.h |    5 +++++
 kernel/module.c        |    5 +++++
 2 files changed, 10 insertions(+)

--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -670,6 +670,11 @@ static inline bool __is_module_percpu_ad
 	return false;
 }
 
+static inline bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr)
+{
+	return false;
+}
+
 static inline bool is_module_text_address(unsigned long addr)
 {
 	return false;
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -767,6 +767,11 @@ bool __is_module_percpu_address(unsigned
 	return false;
 }
 
+bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr)
+{
+	return false;
+}
+
 #endif /* CONFIG_SMP */
 
 #define MODINFO_ATTR(field)	\