From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 13 Nov 2017 17:50:59 +0100
Subject: kallsyms: fix building without printk
Patch-mainline: v4.15-rc1
Git-commit: 01c313dded34a16ef69e3972ceca687ba8a7cdf2
References: bsc#1109837

Building kallsyms fails without CONFIG_PRINTK due to a missing
declaration:

  kernel/kallsyms.c: In function 'kallsyms_show_value':
  kernel/kallsyms.c:670:10: error: 'kptr_restrict' undeclared (first use in this function); did you mean 'keyring_restrict'?

This moves the declaration outside of the #ifdef guard, the definition
is already available without CONFIG_PRINTK.

Fixes: c0f3ea158939 ("stop using '%pK' for /proc/kallsyms pointer values")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[ I clearly need to start doing "allnoconfig" builds too, or just have a
  test branch for the 0day robot - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 include/linux/printk.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -188,7 +188,6 @@ extern bool printk_timed_ratelimit(unsig
 
 extern int printk_delay_msec;
 extern int dmesg_restrict;
-extern int kptr_restrict;
 
 extern int
 devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void __user *buf,
@@ -279,6 +278,8 @@ static inline void printk_safe_flush_on_
 }
 #endif
 
+extern int kptr_restrict;
+
 extern asmlinkage void dump_stack(void) __cold;
 
 #ifndef pr_fmt