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Subject[tip:locking/core] tools/lib/lockdep: Define the ARRAY_SIZE() macro
Commit-ID:  108744c45fd8a51e763e976d9e5b2cc265d4a847
Gitweb: http://git.kernel.org/tip/108744c45fd8a51e763e976d9e5b2cc265d4a847
Author: Ben Hutchings <ben@decadent.org.uk>
AuthorDate: Thu, 25 May 2017 12:58:34 +0000
Committer: Ingo Molnar <mingo@kernel.org>
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@decadent.org.uk>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: a.p.zijlstra@chello.nl
Fixes: 75dd602a5198 ("lockdep: Fix lock_chain::base size")
Link: http://lkml.kernel.org/r/20170525130005.5947-4-alexander.levin@verizon.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
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); \
\
 
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