From: robert.richter@caviumnetworks.com (Robert Richter)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v12 4/5] arm64, numa: Add NUMA support for arm64 platforms.
Date: Mon, 29 Feb 2016 11:12:36 +0100 [thread overview]
Message-ID: <20160229101236.GQ24726@rric.localdomain> (raw)
In-Reply-To: <CAFpQJXURSKFw6RmNVLiB=YDcUiaaQLz3zMvM9gy=b1MobaCfgg@mail.gmail.com>
On 27.02.16 09:43:49, Ganapatrao Kulkarni wrote:
> On Sat, Feb 27, 2016 at 1:21 AM, David Daney <ddaney@caviumnetworks.com> wrote:
> > On 02/26/2016 10:53 AM, Will Deacon wrote:
> >>> +static __init int numa_parse_early_param(char *opt)
> >>> +{
> >>> + if (!opt)
> >>> + return -EINVAL;
> >>> + if (!strncmp(opt, "off", 3)) {
> >>> + pr_info("%s\n", "NUMA turned off");
> >>> + numa_off = 1;
> >>> + }
> >>> + return 0;
> >>> +}
> >>> +early_param("numa", numa_parse_early_param);
> >>
> >>
> >> Curious, but when is this option actually useful?
> >>
> >
> > Good point. I will remove that bit, it was used as an aid in debugging
> > while bringing up the patch set.
>
> this is handy in debugging new platforms.
> this boot argument option forces to boot as single node dummy system
> adding all resources to node0.
This is used to disable numa in a numa enabled kernel esp. for
debugging/enabling/booting single node systems. Same kernel parameter
as for x86 and other archs. Should not being removed.
-Robert
next prev parent reply other threads:[~2016-02-29 10:12 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-23 1:58 [PATCH v12 0/5] arm64, numa: Add numa support for arm64 platforms David Daney
2016-02-23 1:58 ` [PATCH v12 1/5] efi: ARM/arm64: ignore DT memory nodes instead of removing them David Daney
2016-02-23 11:58 ` Mark Rutland
2016-02-23 12:16 ` Will Deacon
2016-02-23 12:20 ` Ard Biesheuvel
2016-02-23 22:12 ` Rob Herring
2016-02-24 19:38 ` Mark Rutland
2016-02-24 19:03 ` Frank Rowand
2016-02-24 19:30 ` Rob Herring
2016-02-24 19:33 ` Mark Rutland
2016-02-23 1:58 ` [PATCH v12 2/5] Documentation, dt, numa: dt bindings for NUMA David Daney
2016-02-23 1:58 ` [PATCH v12 3/5] dt, numa: Add NUMA dt binding implementation David Daney
2016-02-29 17:29 ` Robert Richter
2016-02-29 18:13 ` David Daney
2016-02-29 19:45 ` Robert Richter
2016-02-29 22:56 ` David Daney
2016-02-23 1:58 ` [PATCH v12 4/5] arm64, numa: Add NUMA support for arm64 platforms David Daney
2016-02-23 10:26 ` Will Deacon
2016-02-23 17:34 ` David Daney
2016-02-23 17:39 ` David Daney
2016-02-26 18:53 ` Will Deacon
2016-02-26 19:51 ` David Daney
2016-02-27 4:13 ` Ganapatrao Kulkarni
2016-02-29 10:12 ` Robert Richter [this message]
2016-02-29 17:34 ` Robert Richter
2016-02-29 23:42 ` David Daney
2016-03-01 12:21 ` Robert Richter
2016-02-23 1:58 ` [PATCH v12 5/5] arm64, mm, numa: Add NUMA balancing support for arm64 David Daney
2016-02-26 18:53 ` Will Deacon
2016-02-26 19:26 ` David Daney
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