linux-kernel - Re: [PATCH 13/19] arch/riscv: rename internal name __xchg to __arch

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Date:   Tue, 14 Feb 2023 21:22:24 -0800 (PST)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     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, andrzej.hajda@...el.com,
        Arnd Bergmann <arnd@...db.de>, rodrigo.vivi@...el.com,
        akpm@...ux-foundation.org, andriy.shevchenko@...ux.intel.com,
        peterz@...radead.org, boqun.feng@...il.com, mark.rutland@....com
Subject:     Re: [PATCH 13/19] arch/riscv: rename internal name __xchg to __arch_xchg

On Thu, 22 Dec 2022 03:46:29 PST (-0800), andrzej.hajda@...el.com wrote:
> __xchg will be used for non-atomic xchg macro.
>
> Signed-off-by: Andrzej Hajda <andrzej.hajda@...el.com>
> ---
>  arch/riscv/include/asm/atomic.h  | 2 +-
>  arch/riscv/include/asm/cmpxchg.h | 4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/riscv/include/asm/atomic.h b/arch/riscv/include/asm/atomic.h
> index 0dfe9d857a762b..bba472928b5393 100644
> --- a/arch/riscv/include/asm/atomic.h
> +++ b/arch/riscv/include/asm/atomic.h
> @@ -261,7 +261,7 @@ c_t arch_atomic##prefix##_xchg_release(atomic##prefix##_t *v, c_t n)	\
>  static __always_inline							\
>  c_t arch_atomic##prefix##_xchg(atomic##prefix##_t *v, c_t n)		\
>  {									\
> -	return __xchg(&(v->counter), n, size);				\
> +	return __arch_xchg(&(v->counter), n, size);			\
>  }									\
>  static __always_inline							\
>  c_t arch_atomic##prefix##_cmpxchg_relaxed(atomic##prefix##_t *v,	\
> diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h
> index 12debce235e52d..2f4726d3cfcc25 100644
> --- a/arch/riscv/include/asm/cmpxchg.h
> +++ b/arch/riscv/include/asm/cmpxchg.h
> @@ -114,7 +114,7 @@
>  					    _x_, sizeof(*(ptr)));	\
>  })
>
> -#define __xchg(ptr, new, size)						\
> +#define __arch_xchg(ptr, new, size)					\
>  ({									\
>  	__typeof__(ptr) __ptr = (ptr);					\
>  	__typeof__(new) __new = (new);					\
> @@ -143,7 +143,7 @@
>  #define arch_xchg(ptr, x)						\
>  ({									\
>  	__typeof__(*(ptr)) _x_ = (x);					\
> -	(__typeof__(*(ptr))) __xchg((ptr), _x_, sizeof(*(ptr)));	\
> +	(__typeof__(*(ptr))) __arch_xchg((ptr), _x_, sizeof(*(ptr)));	\
>  })
>
>  #define xchg32(ptr, x)							\

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