From: thunder.leizhen@huawei.com (Leizhen (ThunderTown))
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 2/4] Documentation: arm64/arm: dt bindings for numa.
Date: Sat, 29 Aug 2015 17:46:00 +0800 [thread overview]
Message-ID: <55E17F58.5020101@huawei.com> (raw)
In-Reply-To: <CAL_JsqLOpUTVeKbkJ6uPi0EYistd=BowAHdtSmaUYYDhU6c9Sg@mail.gmail.com>
On 2015/8/28 22:02, Rob Herring wrote:
> +benh
>
> On Fri, Aug 28, 2015 at 7:32 AM, Mark Rutland <mark.rutland@arm.com> wrote:
>> Hi,
>>
>> On Fri, Aug 14, 2015 at 05:39:32PM +0100, Ganapatrao Kulkarni wrote:
>>> DT bindings for numa map for memory, cores and IOs using
>>> arm,associativity device node property.
>>
>> Given this is just a copy of ibm,associativity, I'm not sure I see much
>> point in renaming the properties.
>
> So just keep the ibm? I'm okay with that. That would help move to
> common code. Alternatively, we could drop the vendor prefix and have
> common code just check for both.
>
Hi all,
Why not copy the method of ACPI numa? There only three elements should be configured:
1) a cpu belong to which node
2) a memory block belong to which node
3) the distance of each two nodes
The devicetree nodes of numa can be like below:
/ {
...
numa-nodes-info {
node-name: node-description {
mem-ranges = <...>;
cpus-list = <...>;
};
nodes-distance {
distance-list = <...>;
};
};
...
};
Sorry, I don't think xxx,associativity is a good method, it's hard to config, and it
seems hardware-dependent. Especially, when we want to support memory hot-add, it's too hard.
Because xxx,associativity have no obvious information about it. Like powerpc, it use another
property: "/ibm,dynamic-reconfiguration-memory".
I spend almost a whole month to implement of_numa(configured by dt-nodes), base upon my opinion
mentioned above. If somebody are interested in it, I can send my patchset to show it.
Regards,
Thunder.
next prev parent reply other threads:[~2015-08-29 9:46 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-14 16:39 [PATCH v5 0/8] arm64, numa: Add numa support for arm64 platforms Ganapatrao Kulkarni
2015-08-14 16:39 ` [PATCH v5 1/4] arm64, numa: adding " Ganapatrao Kulkarni
2015-09-03 9:52 ` Ganapatrao Kulkarni
2015-09-03 10:13 ` Will Deacon
2015-09-29 8:43 ` Ganapatrao Kulkarni
2015-10-05 5:24 ` Ganapatrao Kulkarni
2015-08-14 16:39 ` [PATCH v5 2/4] Documentation: arm64/arm: dt bindings for numa Ganapatrao Kulkarni
2015-08-22 15:06 ` Robert Richter
2015-08-23 21:49 ` Rob Herring
2015-08-28 11:32 ` Matthias Brugger
2015-08-28 12:32 ` Mark Rutland
2015-08-28 14:02 ` Rob Herring
2015-08-28 21:37 ` Benjamin Herrenschmidt
2015-09-02 17:11 ` Ganapatrao Kulkarni
2015-08-29 9:46 ` Leizhen (ThunderTown) [this message]
2015-08-29 10:37 ` Benjamin Herrenschmidt
2015-08-31 1:46 ` Leizhen (ThunderTown)
2015-08-29 14:56 ` Ganapatrao Kulkarni
2015-08-31 2:53 ` Leizhen (ThunderTown)
2015-09-08 13:27 ` Hanjun Guo
2015-09-08 16:27 ` Ganapatrao Kulkarni
2015-09-11 3:53 ` Ganapatrao Kulkarni
2015-09-11 6:43 ` Leizhen (ThunderTown)
[not found] ` <CAFpQJXWzM644KsFWP9ei-k6gWgNVpBVT+UbY7NYdyfmyL=zMkw@mail.gmail.com>
2015-09-29 8:38 ` Ganapatrao Kulkarni
2015-09-29 9:42 ` Benjamin Herrenschmidt
2015-09-30 0:28 ` Benjamin Herrenschmidt
2015-09-30 10:19 ` Ganapatrao Kulkarni
2015-09-30 10:53 ` Mark Rutland
2015-09-30 17:50 ` Ganapatrao Kulkarni
2015-10-01 1:05 ` Benjamin Herrenschmidt
[not found] ` <CAFpQJXXKcwks0iZN+3B=U0-9uYKFpAXcZE90GCHN9WyM45Hdpw@mail.gmail.com>
2015-10-01 5:25 ` Ganapatrao Kulkarni
2015-10-01 7:17 ` Benjamin Herrenschmidt
2015-10-01 11:36 ` Ganapatrao Kulkarni
2015-10-13 16:47 ` Mark Rutland
2015-10-13 17:07 ` Ganapatrao Kulkarni
2015-10-14 13:21 ` Hanjun Guo
2015-08-14 16:39 ` [PATCH v5 3/4] arm64, numa, dt: adding dt based numa support using dt node property arm, associativity Ganapatrao Kulkarni
2015-10-09 15:18 ` Catalin Marinas
2015-10-09 16:51 ` Ganapatrao Kulkarni
2015-08-14 16:39 ` [PATCH v5 4/4] arm64, dt, thunderx: Add initial dts for Cavium Thunder SoC in 2 Node topology Ganapatrao Kulkarni
2015-08-18 6:16 ` Jisheng Zhang
2015-08-14 16:44 ` [PATCH v5 0/8] arm64, numa: Add numa support for arm64 platforms Ganapatrao Kulkarni
2015-08-20 6:50 ` Ganapatrao Kulkarni
2015-08-28 14:31 ` Matthias Brugger
2015-08-28 14:59 ` Ganapatrao Kulkarni
2015-08-28 15:36 ` Matthias Brugger
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