2009-12-18 10:12:37

by Arkadiusz Miskiewicz

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Subject: what's node "-1" ?


[ 22.284175] alloc irq_desc for 55 on node -1
[ 22.284177] alloc kstat_irqs on node -1

What's node "-1" ?

dmesg talks about nodes such things:
[ 0.000000] NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:8 nr_node_ids:1
[ 0.073337] CPU 0/0x0 -> Node 0

there is some "node 0" ... but no idea what -1 is.

(2.6.32.1)
--
Arkadiusz Miƛkiewicz PLD/Linux Team
arekm / maven.pl http://ftp.pld-linux.org/


2009-12-18 10:19:49

by Yinghai Lu

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Subject: Re: what's node "-1" ?

On Fri, Dec 18, 2009 at 2:12 AM, Arkadiusz Miskiewicz
<[email protected]> wrote:
>
> [ ? 22.284175] ? alloc irq_desc for 55 on node -1
> [ ? 22.284177] ? alloc kstat_irqs on node -1
>
> What's node "-1" ?
>
> dmesg talks about nodes such things:
> [ ? ?0.000000] NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:8 nr_node_ids:1
> [ ? ?0.073337] CPU 0/0x0 -> Node 0
>
> there is some "node 0" ... but no idea what -1 is.

that mean for irq_desc related, alloc mem will use mem on
cpu_to_node(cpu) that code is runing

YH