Re: swap map

From: Christoph Hellwig
Date: Tue Jan 30 2007 - 06:20:57 EST


On Tue, Jan 30, 2007 at 03:12:35AM -0800, Howard Chu wrote:
> In the it-would-be-nice department... While I was twiddling with swappiness
> and benchmarking some code, I thought it would be pretty cool if there was
> a node in /proc/<pid> that would show which pages of a process are resident
> or nonresident. I'm not sure that it would be useful very often, but I was
> thinking one could get a snapshot of that, correlated with traces from a
> malloc profiler, to show what portions of a program's memory usage was in
> active use vs idle.

That's be a remote mincore(). This should be more or less trivial,
do_mincore would need a mm_struct argument instead of always using
current->mm and we'd need a simple seq_file interface iterating over it.

Any volunteers?
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