Re: 2.6.33 pagemap endless read loop

From: Andi Kleen
Date: Sun Jan 10 2010 - 07:37:17 EST


> Are you sure

I don't know if it's really endless, but it's doing a good emulation
of it if it's not.

>
> On my 32bit machine, it runs for a long time, but finally exits.

That was on 64bit.

proc01 had accumulated several minutes of CPU time when I stopped it.

> From the document of pagemap, it is the mapping of all the virtual pages
> of a process, on x86-32, it should be 4G/4K = 1024*1024 pages, also

Only the mapped ones surely?

Right now it looks like it dumps all the holes and that obviously
will never finish on 64bit which has 47bits of address space.

-Andi
--
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/