Compiler Attributes: add __flatten

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index db192becfec4..fe08a6744849 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -276,6 +276,10 @@ struct ftrace_likely_data {
 #define __always_inline inline __attribute__((always_inline))
 #endif
 
+#ifndef __flatten
+#define __flatten __attribute__((flatten))
+#endif
+
 /*
  * Rather then using noinline to prevent stack consumption, use
  * noinline_for_stack instead.  For documentation reasons.