--On Friday, August 06, 2004 14:38:54 -0400 Albert Cahalan [off-list ref] wrote:

On Fri, 2004-08-06 at 16:49, Martin J. Bligh wrote:

quoted

quoted

As long as I can fall back to the old /proc files when truly
radical kernel changes happen, exposure of kernel internals
isn't a serious problem.

If I had the DWARF2 data alone, /dev/mem might be enough.
(sadly, "top" would require some major work before I'd trust it)

We did that on PTX ... walking tasklists lockless is a bitch.

It's fast. Lockless tasklist walking looks easy enough.
Find the process, grab the data, then find the process
again. If the process went away, discard the data.

Oh, I know it's fast ... and probably the right thing to do. just hard ;-)
Either that or we come up with some intermediate abstraction that's faster
than /proc.
 

I guess I'd like to have a /dev/ram-only device, for protection
against touching device memory (including AGP mem) by mistake.
It's odd that there doesn't seem to be such a device already.
Without this, I'd need to re-verify much more often.

I'll make you one if you need it, but it shouldn't be a problem,
I'd think as you're just following pointers, which should all be
valid ...

M.
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