1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 04fb5135b4e1..acbd654cc850 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -144,6 +144,11 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
 # define barrier() __memory_barrier()
 #endif
 
+/* Unreachable code */
+#ifndef unreachable
+# define unreachable() do { } while (1)
+#endif
+
 #ifndef RELOC_HIDE
 # define RELOC_HIDE(ptr, off)                                   \
   ({ unsigned long __ptr;                                       \
@@ -213,6 +218,10 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
 # define __maybe_unused         /* unimplemented */
 #endif
 
+#ifndef __always_unused
+# define __always_unused        /* unimplemented */
+#endif
+
 #ifndef noinline
 #define noinline
 #endif