From 473d1cf4ee623b043790838bcf77e77958840bf2 Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Sat, 11 Jul 2009 19:56:58 +0900
Subject: sh: Decouple mcount from ftrace.

This adds a general CONFIG_MCOUNT in order to permit mcount generation
without ftrace support. This is primarily for allowing platforms to
enable aggressive stack overflow checking without having to enable ftrace
support. Based on the sparc64 implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
 arch/sh/Kconfig.debug            | 5 +++++
 arch/sh/Makefile                 | 4 ++++
 arch/sh/boot/compressed/Makefile | 2 +-
 arch/sh/kernel/sh_ksyms_32.c     | 2 +-
 arch/sh/lib/Makefile             | 3 +--
 5 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug
index 52a132c24aa..75b5f4e0667 100644
--- a/arch/sh/Kconfig.debug
+++ b/arch/sh/Kconfig.debug
@@ -134,4 +134,9 @@ config STACK_DEBUG
 	  call and will therefore incur a major performance hit. Most
 	  users should say N.
 
+config MCOUNT
+	def_bool y
+	depends on SUPERH32
+	depends on STACK_DEBUG || FUNCTION_TRACER
+
 endmenu
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index 75d049b03f7..52c34bf5696 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -186,6 +186,10 @@ KBUILD_CFLAGS		+= -pipe $(cflags-y)
 KBUILD_CPPFLAGS		+= $(cflags-y)
 KBUILD_AFLAGS		+= $(cflags-y)
 
+ifeq ($(CONFIG_MCOUNT),y)
+  KBUILD_CFLAGS += -pg
+endif
+
 libs-$(CONFIG_SUPERH32)		:= arch/sh/lib/	$(libs-y)
 libs-$(CONFIG_SUPERH64)		:= arch/sh/lib64/ $(libs-y)
 
diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile
index 9531bf1b7c2..3af239cb9b0 100644
--- a/arch/sh/boot/compressed/Makefile
+++ b/arch/sh/boot/compressed/Makefile
@@ -23,7 +23,7 @@ IMAGE_OFFSET	:= $(shell /bin/bash -c 'printf "0x%08x" \
 
 LIBGCC	:= $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
 
-ifeq ($(CONFIG_FUNCTION_TRACER),y)
+ifeq ($(CONFIG_MCOUNT),y)
 ORIG_CFLAGS := $(KBUILD_CFLAGS)
 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
 endif
diff --git a/arch/sh/kernel/sh_ksyms_32.c b/arch/sh/kernel/sh_ksyms_32.c
index fcc5de31f83..5b81116046c 100644
--- a/arch/sh/kernel/sh_ksyms_32.c
+++ b/arch/sh/kernel/sh_ksyms_32.c
@@ -106,7 +106,7 @@ EXPORT_SYMBOL(flush_dcache_page);
 EXPORT_SYMBOL(clear_user_page);
 #endif
 
-#ifdef CONFIG_FUNCTION_TRACER
+#ifdef CONFIG_MCOUNT
 EXPORT_SYMBOL(mcount);
 #endif
 EXPORT_SYMBOL(csum_partial);
diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile
index 19328d90a2d..c2b28d8b2dd 100644
--- a/arch/sh/lib/Makefile
+++ b/arch/sh/lib/Makefile
@@ -24,8 +24,7 @@ memcpy-y			:= memcpy.o
 memcpy-$(CONFIG_CPU_SH4)	:= memcpy-sh4.o
 
 lib-$(CONFIG_MMU)		+= copy_page.o clear_page.o
-lib-$(CONFIG_FUNCTION_TRACER)	+= mcount.o
-lib-$(CONFIG_FUNCTION_GRAPH_TRACER) += mcount.o
+lib-$(CONFIG_MCOUNT)		+= mcount.o
 lib-y				+= $(memcpy-y) $(udivsi3-y)
 
 EXTRA_CFLAGS += -Werror
-- 
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