Re: [PATCH 1/6] MIPS: replace -pg with CC_FLAGS_FTRACE

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On Sat, 13 Mar 2021 14:41:44 +0800
Huang Pei <huangpei@xxxxxxxxxxx> wrote:


Even simple changes require change logs. For example:

"Enabling ftrace may require more than just the -pg flags today. As ftrace
enables more flags, use the $(CC_FLAGS_FTRACE) in the make file instead of
hard coding "-pg"."

Other than that:

Acked-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>

-- Steve


> Signed-off-by: Huang Pei <huangpei@xxxxxxxxxxx>
> ---
>  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 d66511825fe1..8fc9ceeec709 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 2a05b923f579..33e31ea10234 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 5810cc12bc1d..f21cf88f7ae3 100644
> --- a/arch/mips/vdso/Makefile
> +++ b/arch/mips/vdso/Makefile
> @@ -49,7 +49,7 @@ 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
> @@ -63,7 +63,7 @@ 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





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