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-rw-r--r--arch/x86/boot/boot.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index 616b804a229..cc0ef13fba7 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -30,6 +30,8 @@
/* Useful macros */
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
+
extern struct setup_header hdr;
extern struct boot_params boot_params;