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Message-ID: <56A929EB.7010701@hpe.com>
Date: Wed, 27 Jan 2016 15:34:51 -0500
From: Waiman Long <waiman.long@....com>
To: Andi Kleen <andi@...stfloor.org>
CC: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>,
Alexander Viro <viro@...iv.linux.org.uk>,
linux-fsdevel@...r.kernel.org, x86@...nel.org,
linux-kernel@...r.kernel.org,
Peter Zijlstra <peterz@...radead.org>,
Scott J Norton <scott.norton@...com>,
Douglas Hatch <doug.hatch@...com>
Subject: Re: [RFC PATCH 2/3] lib/list_batch, x86: Enable list insertion/deletion
batching in x86-64
On 01/26/2016 04:44 PM, Andi Kleen wrote:
> Waiman Long<Waiman.Long@....com> 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
You are probably right. I will look into that.
Cheers,
Longman
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