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From: Rob Herring <robh@kernel.org>
To: Gavin Shan <gshan@redhat.com>
Cc: devicetree@vger.kernel.org,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	linux-efi <linux-efi@vger.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	"open list:KERNEL VIRTUAL MACHINE FOR ARM64 (KVM/arm64)" 
	<kvmarm@lists.cs.columbia.edu>, Marc Zyngier <maz@kernel.org>,
	Randy Dunlap <rdunlap@infradead.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	shan.gavin@gmail.com
Subject: Re: [PATCH v2 2/2] of, numa: Fetch empty NUMA node ID from distance map
Date: Mon, 27 Sep 2021 09:49:30 -0500	[thread overview]
Message-ID: <CAL_JsqL8+_Q690-c3J4TS6LBF-mCUBxbhTfr994=Fwffqab0_w@mail.gmail.com> (raw)
In-Reply-To: <20210927064119.127285-3-gshan@redhat.com>

On Mon, Sep 27, 2021 at 1:42 AM Gavin Shan <gshan@redhat.com> wrote:
>
> There is no device node for the empty NUMA node. However, the
> corresponding NUMA node ID and distance map is still valid in
> "numa-distance-map-v1" compatible device node.
>
> This fetches the NUMA node ID and distance map for these empty
> NUMA node from "numa-distance-map-v1" compatible device node.

This is much nicer.

> Signed-off-by: Gavin Shan <gshan@redhat.com>
> ---
>  drivers/of/of_numa.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/of/of_numa.c b/drivers/of/of_numa.c
> index fe6b13608e51..5949829a1b00 100644
> --- a/drivers/of/of_numa.c
> +++ b/drivers/of/of_numa.c
> @@ -111,6 +111,8 @@ static int __init of_numa_parse_distance_map_v1(struct device_node *map)
>                         return -EINVAL;
>                 }
>
> +               node_set(nodea, numa_nodes_parsed);
> +

With this, couldn't we remove of_numa_parse_cpu_nodes() as the only
thing it does is node_set()?

>                 numa_set_distance(nodea, nodeb, distance);
>
>                 /* Set default distance of node B->A same as A->B */
> --
> 2.23.0
>

  reply	other threads:[~2021-09-27 14:49 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-27  6:41 [PATCH v2 0/2] Specify empty NUMA node Gavin Shan
2021-09-27  6:41 ` [PATCH v2 1/2] Documentation, dt, numa: Add note to " Gavin Shan
2021-10-04 18:13   ` Rob Herring
2021-09-27  6:41 ` [PATCH v2 2/2] of, numa: Fetch empty NUMA node ID from distance map Gavin Shan
2021-09-27 14:49   ` Rob Herring [this message]
2021-09-27 23:59     ` Gavin Shan
2021-09-28 17:22       ` Rob Herring
2021-09-29  2:00         ` Gavin Shan
2021-10-04 18:13   ` Rob Herring

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