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Date: Mon, 30 Mar 2009 17:24:36 -0700
From: Maxim Sobolev <sobomax@FreeBSD.org>
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To: Scott Long <scottl@samsco.org>
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Cc: Sergey Babkin <babkin@verizon.net>, freebsd-hackers@FreeBSD.org,
	attilio@FreeBSD.org, phk@phk.freebsd.dk,
	freebsd-current@FreeBSD.org, prashant.vaibhav@gmail.com
Subject: Re: Improving the kernel/i386 timecounter
	performance	(GSoC	proposal)
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Scott Long wrote:
> I've been talking about this for years.  All I need is help with the VM 
> magic to create the page on fork.  I also want two pages, one global
> for gettimeofday (and any other global data we can think of) and one
> per-process for static data like getpid/getgid.

I believe somebody suggested that no real VM magic is needed and the 
libc should be in charge of opening special pseudo-device and doing 
necessary mmap(2) magic to get the page mapped in when user calls 
gettimeofday()/getpid()/getid() etc for the first time.

-Maxim