Re: Commit 34d76c41 causes linker errors on ia64 with NR_CPUS=4096

[Tejun Heo]

Hello,

Jiri Kosina wrote:
> How about this one? (untested)
> 
> From: Jiri Kosina <jkosina@xxxxxxx>
> Subject: sched: move rq_weight data array out of .percpu
> 
> Commit 34d76c41 introduced percpu array update_shares_data, size of which 
> being proportional to NR_CPUS. Unfortunately this blows up ia64 for large 
> NR_CPUS configuration, as ia64 allows only 64k for .percpu section.
> 
> Fix this by allocating this array dynamically and keep only pointer to it 
> percpu.

If the structure can be dynamically allocated at all, just using
percpu_alloc() to allocate the whole thing should solve it with the
correct numa locality.

Thanks.

-- 
tejun
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