Re: [RFC/RFT PATCH 2/6] arc: Wire up cmpxchg64_local() to generic implementation

Joey Gouly
2025-11-27T15:06:23Z

On Thu, Nov 27, 2025 at 10:22:29AM +0100, Ard Biesheuvel wrote:
> From: Ard Biesheuvel <ardb@kernel.org>
>
> Provide cmpxchg64_local() for hexagon so we can start using it in
> generic code.

nit: this is for arc, not hexagon.

Thanks,
Joey

>
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> ---
> arch/arc/include/asm/cmpxchg.h | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/arc/include/asm/cmpxchg.h b/arch/arc/include/asm/cmpxchg.h
> index 76f43db0890f..f2d55823645c 100644
> --- a/arch/arc/include/asm/cmpxchg.h
> +++ b/arch/arc/include/asm/cmpxchg.h
> @@ -12,6 +12,7 @@
>
> #include <asm/barrier.h>
> #include <asm/smp.h>
> +#include <asm-generic/cmpxchg-local.h>
>
> #ifdef CONFIG_ARC_HAS_LLSC
>
> @@ -142,4 +143,6 @@
>
> #endif
>
> +#define arch_cmpxchg64_local __generic_cmpxchg64_local
> +
> #endif
> --
> 2.52.0.107.ga0afd4fd5b-goog
>
>