From mboxrd@z Thu Jan  1 00:00:00 1970
From: will.deacon@arm.com (Will Deacon)
Date: Fri, 26 Aug 2016 16:29:16 +0100
Subject: [PATCH v7 10/14] arm64/numa: define numa_distance as array to
 simplify code
In-Reply-To: <1472024693-12912-11-git-send-email-thunder.leizhen@huawei.com>
References: <1472024693-12912-1-git-send-email-thunder.leizhen@huawei.com>
 <1472024693-12912-11-git-send-email-thunder.leizhen@huawei.com>
Message-ID: <20160826152915.GH30302@arm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Wed, Aug 24, 2016 at 03:44:49PM +0800, Zhen Lei wrote:
> 1. MAX_NUMNODES is base on CONFIG_NODES_SHIFT, the default value of the
>    latter is very small now.
> 2. Suppose the default value of MAX_NUMNODES is enlarged to 64, so the
>    size of numa_distance is 4K, it's still acceptable if run the Image
>    on other processors.
> 3. It will make function __node_distance quicker than before.
> 
> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
> ---
>  arch/arm64/include/asm/numa.h |  1 -
>  arch/arm64/mm/numa.c          | 74 +++----------------------------------------
>  2 files changed, 5 insertions(+), 70 deletions(-)

I fail to see the advantages of this patch. Do you have some compelling
performance figures or something?

Will