Messages in this thread | | | Date | Fri, 21 Mar 2008 21:55:59 +0100 | From | Ingo Molnar <> | Subject | Re: [2/2] vmallocinfo: Add caller information |
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* Christoph Lameter <clameter@sgi.com> wrote:
> > the best i found for lockdep was to include a fair number of them, > > and to skip the top 3. struct vm_area that vmalloc uses isnt > > space-critical, so 4-8 entries with a 3 skip would be quite ok. (but > > can be more than that as well) > > STACKTRACE depends on STACKTRACE_SUPPORT which is not available on all > arches? alpha blackfin ia64 etc are missing it?
one more reason for them to implement it.
> I thought there were also issues on x86 with optimizations leading to > weird stacktraces?
at most there can be extra stack trace entries. This is for debugging, so if someone wants exact stacktraces, FRAME_POINTERS will certainly improve them.
Ingo
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