Re: [proc.txt] Fix /proc/pid/statm documentation

Albert Cahalan
2004-08-06T21:13:29Z

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

> > 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.

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.

Any problem I'm not seeing?