Output Redesign in SystemTap Runtime

[Martin Hunt]

On Tue, 2005-04-26 at 07:14 -0400, Frank Ch. Eigler wrote:

> More generally, backtrace data can instead be saved in ordinary
> systemtap variables, meaning in strings or numbers, and only
> eventually printed.  By that time, the exact origins ("this came from
> a stack") would be lost, in the absence of heroic measures.

Not really.  "<stack> 0xf0001234 ...  </stack>" gets saved as a string
and is obviously still a stack trace. So it can be saved in maps, etc
and still get symbolic lookups and formatting in postprocessing.  There
is a verbose parameter to the backtrace command that, if set to zero,
would just generate the numbers without the tags, if that is wanted.

Martin