Re: [PATCH v3 3/6] expose fine-grained per-cpu data for cpuacct stats

From: Glauber Costa
Date: Wed May 30 2012 - 09:44:25 EST


On 05/30/2012 04:48 PM, Paul Turner wrote:
> Now, if you guys are okay with a file per-cpu, I can do it as well.
> It pollutes the filesystem, but at least protects against the fact that this
> is kmalloc-backed.
>
As I prefaced, I'm not sure there's much that can be trivially done
about it. This is really a fundamental limitation of how read_map()
works.

What we really need is a proper seq_file exposed through cftypes.

Tejun, would you be okay with an interface that exports somehow the raw seq_file in cgroups ?

This way we could call s_show for each cpu and get away with the memory usage problem, I presume
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