diff --git a/[refs] b/[refs]
index 4801dad87ab0..636cfb91b10c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 95d18aa2b6c05351181934b3bc34ce038cc7b637
+refs/heads/master: d30ff29562ecbf79e82df72724d0c6180f2e2c06
diff --git a/trunk/tools/perf/Makefile b/trunk/tools/perf/Makefile
index 7e25f59e5e89..b1801e0693c9 100644
--- a/trunk/tools/perf/Makefile
+++ b/trunk/tools/perf/Makefile
@@ -490,6 +490,8 @@ ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF),libelf),y)
 		LIBC_SUPPORT := 1
 	endif
 	ifeq ($(LIBC_SUPPORT),1)
+		msg := $(warning No libelf found, disables 'probe' tool, please install elfutils-libelf-devel/libelf-dev);
+
 		NO_LIBELF := 1
 		NO_DWARF := 1
 		NO_DEMANGLE := 1