> The only option I have seen proposed that might qualify as something > general purpose and simple is a new filesystem that is just the process > directories of proc.
While "mount -t pid" and "mount -t sysctl" are decades overdue, I don't think they cover everything. IIRC some gcc versions read /proc/meminfo on every invocation. Now imagine such program doesn't have a fallback if /proc/ doesn't exist (how many thousands such programs are there?) So user is going to ask for /proc with just /proc/meminfo only. At this point it is back to nearly full /proc.
