linux-kernel - Re: [PATCH v3 1/3] riscv: vdso: Deduplicate CFLAGS_REMOVE

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Message-ID: <20250611184018.GA2192624@ax162>
Date: Wed, 11 Jun 2025 11:40:18 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Cc: Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Andy Lutomirski <luto@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Vincenzo Frascino <vincenzo.frascino@....com>,
	linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev
Subject: Re: [PATCH v3 1/3] riscv: vdso: Deduplicate CFLAGS_REMOVE_* variables

On Wed, Jun 11, 2025 at 11:22:12AM +0200, Thomas Weißschuh 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: Nathan Chancellor <nathan@...nel.org>

> ---
>  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
> 
> -- 
> 2.49.0
>