[tip:locking/core] tools/lib/lockdep: Define the ARRAY_SIZE() macro

[tip-bot for Ben Hutchings]

Commit-ID:  108744c45fd8a51e763e976d9e5b2cc265d4a847
Gitweb:     http://git.kernel.org/tip/108744c45fd8a51e763e976d9e5b2cc265d4a847
Author:     Ben Hutchings <ben@xxxxxxxxxxxxxxx>
AuthorDate: Thu, 25 May 2017 12:58:34 +0000
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 5 Jun 2017 09:28:04 +0200

tools/lib/lockdep: Define the ARRAY_SIZE() macro

lockdep.c now uses ARRAY_SIZE().

Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: a.p.zijlstra@xxxxxxxxx
Fixes: 75dd602a5198 ("lockdep: Fix lock_chain::base size")
Link: http://lkml.kernel.org/r/20170525130005.5947-4-alexander.levin@xxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 tools/lib/lockdep/uinclude/linux/kernel.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/lib/lockdep/uinclude/linux/kernel.h b/tools/lib/lockdep/uinclude/linux/kernel.h
index 276c7a8..da87bd9 100644
--- a/tools/lib/lockdep/uinclude/linux/kernel.h
+++ b/tools/lib/lockdep/uinclude/linux/kernel.h
@@ -7,6 +7,8 @@
 #include <linux/hardirq.h>
 #include <linux/kern_levels.h>
 
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
 #ifndef container_of
 #define container_of(ptr, type, member) ({			\
 	const typeof(((type *)0)->member) * __mptr = (ptr);	\