[PATCH v3] MIPS: Makefile: Replace -pg with CC_FLAGS_FTRACE

[zhaoxiao]

This patch replaces the "open-coded" -pg compile flag with a CC_FLAGS_FTRACE
makefile variable which architectures can override if a different option
should be used for code generation.

Signed-off-by: zhaoxiao <zhaoxiao@xxxxxxxxxxxxx>
---
v3:Modify the description for the patch.
 arch/mips/boot/compressed/Makefile | 2 +-
 arch/mips/kernel/Makefile          | 8 ++++----
 arch/mips/vdso/Makefile            | 4 ++--
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
index f93f72bcba97..e4b7839293e1 100644
--- a/arch/mips/boot/compressed/Makefile
+++ b/arch/mips/boot/compressed/Makefile
@@ -18,7 +18,7 @@ include $(srctree)/arch/mips/Kbuild.platforms
 BOOT_HEAP_SIZE := 0x400000
 
 # Disable Function Tracer
-KBUILD_CFLAGS := $(filter-out -pg, $(KBUILD_CFLAGS))
+KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_FTRACE), $(KBUILD_CFLAGS))
 
 KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
 
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index b4a57f1de772..814b3da30501 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -17,10 +17,10 @@ obj-y		+= cpu-probe.o
 endif
 
 ifdef CONFIG_FUNCTION_TRACER
-CFLAGS_REMOVE_ftrace.o = -pg
-CFLAGS_REMOVE_early_printk.o = -pg
-CFLAGS_REMOVE_perf_event.o = -pg
-CFLAGS_REMOVE_perf_event_mipsxx.o = -pg
+CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_early_printk.o =  $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_perf_event.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_perf_event_mipsxx.o = $(CC_FLAGS_FTRACE)
 endif
 
 obj-$(CONFIG_CEVT_BCM1480)	+= cevt-bcm1480.o
diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile
index 2131d3fd7333..1b2ea34c3d3b 100644
--- a/arch/mips/vdso/Makefile
+++ b/arch/mips/vdso/Makefile
@@ -46,7 +46,7 @@ CFLAGS_vgettimeofday-o32.o = -include $(srctree)/$(src)/config-n32-o32-env.c -in
 CFLAGS_vgettimeofday-n32.o = -include $(srctree)/$(src)/config-n32-o32-env.c -include $(c-gettimeofday-y)
 endif
 
-CFLAGS_REMOVE_vgettimeofday.o = -pg
+CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE)
 
 ifdef CONFIG_MIPS_DISABLE_VDSO
   ifndef CONFIG_MIPS_LD_CAN_LINK_VDSO
@@ -60,7 +60,7 @@ ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \
 	$(filter -E%,$(KBUILD_CFLAGS)) -nostdlib -shared \
 	-G 0 --eh-frame-hdr --hash-style=sysv --build-id=sha1 -T
 
-CFLAGS_REMOVE_vdso.o = -pg
+CFLAGS_REMOVE_vdso.o = $(CC_FLAGS_FTRACE)
 
 GCOV_PROFILE := n
 UBSAN_SANITIZE := n
-- 
2.20.1