diff --git a/samples/ftrace/ftrace-direct-modify.c b/samples/ftrace/ftrace-direct-modify.c
index e04229d214753267e6f5eb3978a921ef278d4af6..c13a5bc5095bea5cb1dbb1fba19ef3a49ce4cf08 100644
--- a/samples/ftrace/ftrace-direct-modify.c
+++ b/samples/ftrace/ftrace-direct-modify.c
@@ -20,18 +20,22 @@ static unsigned long my_ip = (unsigned long)schedule;
 
 asm (
 "	.pushsection    .text, \"ax\", @progbits\n"
+"	.type		my_tramp1, @function\n"
 "   my_tramp1:"
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
 "	call my_direct_func1\n"
 "	leave\n"
+"	.size		my_tramp1, .-my_tramp1\n"
 "	ret\n"
+"	.type		my_tramp2, @function\n"
 "   my_tramp2:"
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
 "	call my_direct_func2\n"
 "	leave\n"
 "	ret\n"
+"	.size		my_tramp2, .-my_tramp2\n"
 "	.popsection\n"
 );
 
diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c
index 27efa5f6ff5285cf06472a02ef60b7d1e0e71c4a..d5c5022be66429be712c530eafdea7ce86299244 100644
--- a/samples/ftrace/ftrace-direct-too.c
+++ b/samples/ftrace/ftrace-direct-too.c
@@ -15,6 +15,7 @@ extern void my_tramp(void *);
 
 asm (
 "	.pushsection    .text, \"ax\", @progbits\n"
+"	.type		my_tramp, @function\n"
 "   my_tramp:"
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
@@ -27,6 +28,7 @@ asm (
 "	popq %rdi\n"
 "	leave\n"
 "	ret\n"
+"	.size		my_tramp, .-my_tramp\n"
 "	.popsection\n"
 );
 
diff --git a/samples/ftrace/ftrace-direct.c b/samples/ftrace/ftrace-direct.c
index a2e3063bd306b829d0d7ef082e7fc2d6cb4d619e..63ca06d42c803ff8ad846d446f91be45bd71d000 100644
--- a/samples/ftrace/ftrace-direct.c
+++ b/samples/ftrace/ftrace-direct.c
@@ -13,6 +13,7 @@ extern void my_tramp(void *);
 
 asm (
 "	.pushsection    .text, \"ax\", @progbits\n"
+"	.type		my_tramp, @function\n"
 "   my_tramp:"
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
@@ -21,6 +22,7 @@ asm (
 "	popq %rdi\n"
 "	leave\n"
 "	ret\n"
+"	.size		my_tramp, .-my_tramp\n"
 "	.popsection\n"
 );