linux-kernel - Re: [PATCH v4 17/24] riscv: vdso: Deduplicate CFLAGS_REMOVE

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Message-ID: <mhng-540E0EE0-A9CF-4EE3-9E71-969B40D29C50@Palmers-Mini.rwc.dabbelt.com>
Date: Fri, 15 Aug 2025 08:07:31 -0700 (PDT)
From: Palmer Dabbelt <palmer@...belt.com>
To: thomas.weissschuh@...utronix.de
CC: Paul Walmsley <paul.walmsley@...ive.com>, aou@...s.berkeley.edu,
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  thomas.weissschuh@...utronix.de
Subject:     Re: [PATCH v4 17/24] riscv: vdso: Deduplicate CFLAGS_REMOVE_* variables

On Mon, 11 Aug 2025 22:44:30 PDT (-0700), thomas.weissschuh@...utronix.de wrote:
> All vDSO objects need the same treatment.
> To make changes to both the list of objects and the list of removed flags
> easier, introduce a helper variable.
>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
> Reviewed-by: Alexandre Ghiti <alexghiti@...osinc.com>
> Reviewed-by: Nathan Chancellor <nathan@...nel.org>
> Tested-by: Jan Stancek <jstancek@...hat.com>
> ---
>  arch/riscv/kernel/vdso/Makefile | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
> index 9ebb5e590f93a3228c451dca58e6d5cfbbc03ff7..c19c3c76f7c9f6b2f7523a59269de3b683656323 100644
> --- a/arch/riscv/kernel/vdso/Makefile
> +++ b/arch/riscv/kernel/vdso/Makefile
> @@ -49,9 +49,10 @@ CPPFLAGS_vdso.lds += -DHAS_VGETTIMEOFDAY
>  endif
>
>  # Disable -pg to prevent insert call site
> -CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) $(CC_FLAGS_SCS)
> -CFLAGS_REMOVE_getrandom.o = $(CC_FLAGS_FTRACE) $(CC_FLAGS_SCS)
> -CFLAGS_REMOVE_hwprobe.o = $(CC_FLAGS_FTRACE) $(CC_FLAGS_SCS)
> +CFLAGS_REMOVE_VDSO = $(CC_FLAGS_FTRACE) $(CC_FLAGS_SCS)
> +CFLAGS_REMOVE_vgettimeofday.o = $(CFLAGS_REMOVE_VDSO)
> +CFLAGS_REMOVE_getrandom.o = $(CFLAGS_REMOVE_VDSO)
> +CFLAGS_REMOVE_hwprobe.o = $(CFLAGS_REMOVE_VDSO)
>
>  # Force dependency
>  $(obj)/vdso.o: $(obj)/vdso.so

Reviewed-by: Palmer Dabbelt <palmer@...belt.com>
Acked-by: Palmer Dabbelt <palmer@...belt.com>

Also assuming you want to take this with the others.