Messages in this thread | | | Date | Sun, 26 Oct 2008 09:49:05 -0400 | From | "Frank Ch. Eigler" <> | Subject | Re: [PATCH 1/4] Add support for userspace stacktraces in tracing/iter_ctrl |
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Hi -
On Sun, Oct 26, 2008 at 03:38:45PM +0200, Török Edwin wrote:
> [...] In userspace I can get a stacktrace using DWARF unwind info, > but doing that in the kernel would be too expensive, right? [...]
We're experimenting with just that in systemtap. The expenses (memory: megabytes of unwind data, time: running code to process it) would be paid only for the duration of a systemtap script that needs that particular sort of information.
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