Re: [patch] x86: fix cpumask_of_pcibus() to handle nid of -1

[David Rientjes]

On Mon, 21 Sep 2009, Suresh Siddha wrote:

> On my two socket NHM-EP system, with CONFIG_DEBUG_PER_CPU_MAPS=y I see:
> 
>   cpumask_of_node(-1): no node_to_cpumask_map!
>   Pid: 5635, comm: irqbalance Not tainted 2.6.31-07068-g43c1266-dirty #145
>   Call Trace:
>    [<ffffffff81031033>] cpumask_of_node+0x4f/0x58
>    [<ffffffff811b5a8c>] local_cpus_show+0x1f/0x48
>    [<ffffffff812c3c65>] dev_attr_show+0x20/0x44
>    [<ffffffff810fcade>] sysfs_read_file+0xb2/0x131
>    [<ffffffff810b2702>] vfs_read+0xab/0x147
>    [<ffffffff810b2862>] sys_read+0x47/0x6f
>    [<ffffffff8100af6b>] system_call_fastpath+0x16/0x1b
> 
> Fix x86 version of cpumask_of_pcibus() to handle node id of "-1"
> (default value indicating that I/O isn't tied to any particular node).
> 

This is already fixed in -mm with 
x86-default-pcibus-cpumask-to-all-cpus-if-it-lacks-affinity.patch and is 
awaiting inclusion via Jesse Barnes' tree.
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