Re: [RFC PATCH 2/3] lib/list_batch, x86: Enable list insertion/deletion batching in x86-64

From: Andi Kleen
Date: Tue Jan 26 2016 - 16:44:26 EST


Waiman Long <Waiman.Long@xxxxxxx> writes:
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 330e738..443e41d 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -42,6 +42,7 @@ config X86
> select ARCH_SUPPORTS_NUMA_BALANCING if X86_64
> select ARCH_USE_BUILTIN_BSWAP
> select ARCH_USE_CMPXCHG_LOCKREF if X86_64
> + select ARCH_USE_LIST_BATCHING if X86_64

I would make it unconditional. The code is simple enough
and shouldn't have drawbacks on smaller systems.

-Andi