Re: sched: CPU #1's llc-sibling CPU #0 is not on the same node!

From: Tim Gardner
Date: Mon Feb 25 2013 - 10:32:40 EST


On 02/25/2013 08:02 AM, Tim Gardner wrote:
> Is this an expected warning ? I'll boot a vanilla kernel just to be sure.
>
> rebased against ab7826595e9ec51a51f622c5fc91e2f59440481a in Linus' repo:
>

Same with a vanilla kernel, so it doesn't appear that any Ubuntu cruft
is having an impact:

[ 0.170435] ------------[ cut here ]------------
[ 0.170450] WARNING: at arch/x86/kernel/smpboot.c:324
topology_sane.isra.2+0x71/0x84()
[ 0.170452] Hardware name: S2600CP
[ 0.170454] sched: CPU #1's llc-sibling CPU #0 is not on the same
node! [node: 1 != 0]. Ignoring dependency.
[ 0.156000] smpboot: Booting Node 1, Processors #1
[ 0.170455] Modules linked in:
[ 0.170460] Pid: 0, comm: swapper/1 Not tainted 3.8.0+ #1
[ 0.170461] Call Trace:
[ 0.170466] [<ffffffff810597bf>] warn_slowpath_common+0x7f/0xc0
[ 0.170473] [<ffffffff810598b6>] warn_slowpath_fmt+0x46/0x50
[ 0.170477] [<ffffffff816cc752>] topology_sane.isra.2+0x71/0x84
[ 0.170482] [<ffffffff816cc9de>] set_cpu_sibling_map+0x23f/0x436
[ 0.170487] [<ffffffff816ccd0c>] start_secondary+0x137/0x201
[ 0.170502] ---[ end trace 09222f596307ca1d ]---

rtg
--
Tim Gardner tim.gardner@xxxxxxxxxxxxx
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