ksyms pseudo driver

[Stacey Son]

Andrew Gallatin wrote:
> Ah, now everything is perfectly clear to me.  Your method is
> very clever indeed.
>
> Just out of curiosity, how much memory will the entire symbol
> + strings table require?  How often do typical consumers (like dtrace)
> request them?

On an AMD64 "Generic" kernel with only the ksyms module loaded it is 
1523847 bytes.

lockstat(1M) will open and read /dev/ksyms once each time it is 
invoked.   For dtrace, it depends on the script but there shouldn't be 
any reason why it reads it more than once as well.

-stacey.