[PATCH v4 3/6] tools include: Add some common function attributes

[Mark Brown]

We don't have definitions of __always_unused or __noreturn in the tools
version of compiler.h, add them so we can use them in kselftests.

Signed-off-by: Mark Brown <broonie at kernel.org>
---
 tools/include/linux/compiler.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tools/include/linux/compiler.h b/tools/include/linux/compiler.h
index f75cced41d59..1684216e826a 100644
--- a/tools/include/linux/compiler.h
+++ b/tools/include/linux/compiler.h
@@ -42,6 +42,18 @@
 # define __always_inline	inline __attribute__((always_inline))
 #endif
 
+#ifndef __always_unused
+#define __always_unused __attribute__((__unused__))
+#endif
+
+#ifndef __noreturn
+#define __noreturn __attribute__((__noreturn__))
+#endif
+
+#ifndef unreachable
+#define unreachable() __builtin_unreachable()
+#endif
+
 #ifndef noinline
 #define noinline
 #endif

-- 
2.30.2