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>

diff --git a/tools/lib/lockdep/uinclude/linux/kernel.h b/tools/lib/lockdep/uinclude/linux/kernel.h
index 276c7a8b2ed127ccdad6d4be0f31580bde9a84ff..da87bd9ad2c1848100987ba415cfae90792eb4b3 100644 (file)
--- 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);     \