Re: [RFC] AutoNUMA alpha6

Peter Zijlstra
2012-03-19T18:47:45Z

On Fri, 2012-03-16 at 19:25 +0100, Andrea Arcangeli wrote:
> http://git.kernel.org/?p=linux/kernel/git/andrea/aa.git;a=patch;h=30ed50adf6cfe85f7feb12c4279359ec52f5f2cd;hp=c03cf0621ed5941f7a9c1e0a343d4df30dbfb7a1
>
> It's a big monlithic patch, but I'll split it.

I applied this big patch to a fairly recent tree from Linus but it
failed to boot. It got stuck somewhere in SMP bringup.

I waited for several seconds but pressed the remote power switch when
nothing more came out..

The last bit out of my serial console looked like:

---

Booting Node 0, Processors #1
smpboot cpu 1: start_ip = 98000
cpu 1 node 0
cpu 1 apicid 2 node 0
Pid: 0, comm: swapper/1 Not tainted 3.3.0-rc7-00048-g762ad8a-dirty #32
Call Trace:
[<ffffffff81942a37>] numa_set_node+0x50/0x6a
[<ffffffff8193f0b4>] init_intel+0x13c/0x232
[<ffffffff8193e50a>] ? get_cpu_cap+0xa3/0xa7
[<ffffffff8193e74e>] identify_cpu+0x240/0x347
[<ffffffff8193e869>] identify_secondary_cpu+0x14/0x1b
[<ffffffff8194131b>] smp_store_cpu_info+0x3c/0x3e
[<ffffffff8194176a>] start_secondary+0x109/0x21e
numa cpu 1 node 0
NMI watchdog enabled, takes one hw-pmu counter.
#2
smpboot cpu 2: start_ip = 98000
cpu 2 node 0
cpu 2 apicid 4 node 0
Pid: 0, comm: swapper/2 Not tainted 3.3.0-rc7-00048-g762ad8a-dirty #32
Call Trace:
[<ffffffff81942a37>] numa_set_node+0x50/0x6a
[<ffffffff8193f0b4>] init_intel+0x13c/0x232
[<ffffffff8193e50a>] ? get_cpu_cap+0xa3/0xa7
[<ffffffff8193e74e>] identify_cpu+0x240/0x347
[<ffffffff8193e869>] identify_secondary_cpu+0x14/0x1b
[<ffffffff8194131b>] smp_store_cpu_info+0x3c/0x3e
[<ffffffff8194176a>] start_secondary+0x109/0x21e
numa cpu 2 node 0
NMI