From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Mon, 27 Jul 2020 19:28:58 +0000 (-0400)
Subject: radix tree test suite: Add support for fallthrough attribute
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=12cb0fac6cf4b95c7b1a98fb1a124de2bdcf7f05;p=users%2Fjedix%2Flinux-maple.git

radix tree test suite: Add support for fallthrough attribute

Add support for fallthrough on case statements.  Note this does *NOT*
check for missing fallthrough, but does allow compiling of code with
fallthrough in case statements.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---

diff --git a/tools/testing/radix-tree/linux/kernel.h b/tools/testing/radix-tree/linux/kernel.h
index c5c9d05f29da..99979aeaa379 100644
--- a/tools/testing/radix-tree/linux/kernel.h
+++ b/tools/testing/radix-tree/linux/kernel.h
@@ -24,4 +24,11 @@
 #define __must_hold(x)
 
 #define EXPORT_PER_CPU_SYMBOL_GPL(x)
+
+#if __has_attribute(__fallthrough__)
+# define fallthrough                    __attribute__((__fallthrough__))
+#else
+# define fallthrough                    do {} while (0)  /* fallthrough */
+#endif /* __has_attribute */
+
 #endif /* _KERNEL_H */