Messages in this thread |  | | Date | Fri, 10 Feb 2012 17:42:27 -0200 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [RFC 0/5] kernel: backtrace unwind support |
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Em Fri, Feb 10, 2012 at 05:39:32PM -0200, Arnaldo Carvalho de Melo escreveu: > Em Fri, Feb 10, 2012 at 11:32:42AM -0800, Linus Torvalds escreveu: > > On Fri, Feb 10, 2012 at 11:27 AM, Arnaldo Carvalho de Melo > > > "Vote for --fno-omit-frame-pointer! One register is a cheap price to pay > > > for not going insane!"
> > > /me goes back to non political things.
> > Even with -fomit-frame-pointer (which seems to be a big deal on Atom > > in particular) > > Nah, on such register starved arches we just do what we do today: try to > figure out bogus addresses and bail out.
And the "interesting" thing is that at least on:
[acme@aninha linux]$ cat /etc/fedora-release Fedora release 14 (Laughlin) [acme@aninha linux]$ uname -p i686
I have -fno-omit-frame-pointer and get nice callchains, but if I try it on fedora x86_64... b00m. Go figure.
- Arnaldo
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