[tip:core/locking] liblockdep: Prevent multiple declarations of CALLER_ADDR0

[tip-bot for Sasha Levin]

Commit-ID:  8299c063bfa238da87fbdd15b1c3a31ca6e8ff74
Gitweb:     http://git.kernel.org/tip/8299c063bfa238da87fbdd15b1c3a31ca6e8ff74
Author:     Sasha Levin <sasha.levin@xxxxxxxxxx>
AuthorDate: Sat, 9 Feb 2013 19:39:37 -0500
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 11 Feb 2013 10:12:39 +0100

liblockdep: Prevent multiple declarations of CALLER_ADDR0

They are declared once in the public and once in the private
headers, prevent declaring them twice if both headers are used.

Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Cc: jamie.iles@xxxxxxxxxx
Cc: penberg@xxxxxxxxxx
Cc: acme@xxxxxxxxxxxxxxxxxx
Cc: paulus@xxxxxxxxx
Cc: namhyung@xxxxxxxxxx
Cc: peterz@xxxxxxxxxxxxx
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1360456781-32462-7-git-send-email-sasha.levin@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 tools/lib/lockdep/include/liblockdep/common.h | 3 +++
 tools/lib/lockdep/uinclude/linux/kernel.h     | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/tools/lib/lockdep/include/liblockdep/common.h b/tools/lib/lockdep/include/liblockdep/common.h
index a675ef0..1bad66c 100644
--- a/tools/lib/lockdep/include/liblockdep/common.h
+++ b/tools/lib/lockdep/include/liblockdep/common.h
@@ -3,8 +3,11 @@
 
 #include <pthread.h>
 
+#ifndef CALLER_ADDR0
 #define CALLER_ADDR0 (__builtin_return_address(0))
 #define _THIS_IP_ CALLER_ADDR0
+#endif
+
 #define NR_LOCKDEP_CACHING_CLASSES 2
 #define MAX_LOCKDEP_SUBCLASSES 8UL
 
diff --git a/tools/lib/lockdep/uinclude/linux/kernel.h b/tools/lib/lockdep/uinclude/linux/kernel.h
index da97ce8..af02ac1 100644
--- a/tools/lib/lockdep/uinclude/linux/kernel.h
+++ b/tools/lib/lockdep/uinclude/linux/kernel.h
@@ -28,7 +28,9 @@
 #define noinline
 #define list_add_tail_rcu list_add_tail
 
+#ifndef CALLER_ADDR0
 #define _THIS_IP_ CALLER_ADDR0
 #define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
+#endif
 
 #endif
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/