Re: [PATCH 5/5] proc: export more page flags in /proc/kpageflags

[Matt Mackall]

On Tue, 2009-04-28 at 13:47 -0700, Tony Luck wrote:
> On Tue, Apr 28, 2009 at 11:34 AM, Matt Mackall <mpm@xxxxxxxxxxx> wrote:
> > Bah. The rate of change is proportional to #cpus, not #pages. Assuming
> > you've got 1024 processors, you could run the scan in parallel in .2
> > seconds still.
> 
> That would help ... it would also make the patch to support this
> functionality a lot more complex.

The kernel bits should handle this already today. You just need 1k
userspace threads to open /proc/kpageflags, seek() appropriately, and
read().

-- 
http://selenic.com : development and support for Mercurial and Linux


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