linux-kernel - Re: [PATCH v3] arch: rename all internal names __xchg to __arch

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Message-ID: <Y7P9IcR7/jgYWMcq@osiris>
Date:   Tue, 3 Jan 2023 11:02:09 +0100
From:   Heiko Carstens <hca@...ux.ibm.com>
To:     Andrzej Hajda <andrzej.hajda@...el.com>
Cc:     linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-snps-arc@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-hexagon@...r.kernel.org, linux-ia64@...r.kernel.org,
        loongarch@...ts.linux.dev, linux-m68k@...ts.linux-m68k.org,
        linux-mips@...r.kernel.org, openrisc@...ts.librecores.org,
        linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-xtensa@...ux-xtensa.org, intel-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, Arnd Bergmann <arnd@...db.de>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v3] arch: rename all internal names __xchg to __arch_xchg

On Fri, Dec 30, 2022 at 03:15:52PM +0100, Andrzej Hajda wrote:
> __xchg will be used for non-atomic xchg macro.
> 
> Signed-off-by: Andrzej Hajda <andrzej.hajda@...el.com>
> Reviewed-by: Arnd Bergmann <arnd@...db.de>
> ---
> v2: squashed all arch patches into one
> v3: fixed alpha/xchg_local, thx to lkp@...el.com
> ---
...
>  arch/s390/include/asm/cmpxchg.h      | 4 ++--
> diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h
> index 84c3f0d576c5b1..efc16f4aac8643 100644
> --- a/arch/s390/include/asm/cmpxchg.h
> +++ b/arch/s390/include/asm/cmpxchg.h
> @@ -14,7 +14,7 @@
>  
>  void __xchg_called_with_bad_pointer(void);
>  
> -static __always_inline unsigned long __xchg(unsigned long x,
> +static __always_inline unsigned long __arch_xchg(unsigned long x,
>  					    unsigned long address, int size)

Please adjust the alignment of the second line.

> @@ -77,7 +77,7 @@ static __always_inline unsigned long __xchg(unsigned long x,
>  	__typeof__(*(ptr)) __ret;					\
>  									\
>  	__ret = (__typeof__(*(ptr)))					\
> -		__xchg((unsigned long)(x), (unsigned long)(ptr),	\
> +		__arch_xchg((unsigned long)(x), (unsigned long)(ptr),	\
>  		       sizeof(*(ptr)));					\

Same here.

The same is true for a couple of other architectures - not sure if
they care however.