Re: Improving the kernel/i386 timecounter performance (GSoC proposal)

From: Maxim Sobolev <sobomax_at_FreeBSD.org>
Date: Mon, 30 Mar 2009 17:24:36 -0700
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
Received on Mon Mar 30 2009 - 23:02:11 UTC

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