From: Ingo Molnar <mingo@elte.hu>
Date: Tue, 25 Nov 2008 07:44:24 +0000 (+0100)
Subject: lockdep: fix unused function warning in kernel/lockdep.c
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7807fafa52b990abb321f1212416c71e64523ecb;p=linux-beck.git

lockdep: fix unused function warning in kernel/lockdep.c

Impact: fix build warning

this warning:

  kernel/lockdep.c:584: warning: ‘print_lock_dependencies’ defined but not used

triggers because print_lock_dependencies() is only used if both
CONFIG_TRACE_IRQFLAGS and CONFIG_PROVE_LOCKING are enabled.

But adding #ifdefs is not an option here - it would spread out to 4-5
other helper functions and uglify the file. So mark this function
as __used - it's static and the compiler can eliminate it just fine.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index a42858303233..c137953420e0 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -580,7 +580,8 @@ static void print_lock_class_header(struct lock_class *class, int depth)
 /*
  * printk all lock dependencies starting at <entry>:
  */
-static void print_lock_dependencies(struct lock_class *class, int depth)
+static void __used
+print_lock_dependencies(struct lock_class *class, int depth)
 {
 	struct lock_list *entry;