Orphaning libunwind

[Jiri Olsa]

On Mon, Nov 26, 2012 at 09:34:35AM -0500, Josh Boyer wrote:
> On Mon, Nov 26, 2012 at 9:29 AM, Jiri Olsa <jolsa at redhat.com> wrote:
> >> > If perf winds up getting stuck relying on an orphaned library for some
> >> > non-trivial amount of time,
> >>
> >> AFAIK that is common in Fedora there are orphaned libraries in use for
> >> a release or two.
> >>
> >>
> >> > I'd rather just turn off libunwind support in perf now.  It's only enabled
> >> > in rawhide at the moment because it is a 3.7 feature.  Before we bring 3.7
> >> > back to f17-f18, we should probably decide.
> >>
> >> That is more a question to Jiri Olsa, the author of perf libunwind client.
> >
> > it will be configurable for both libunwind and elfutils unwinders,
> > and making default the one with better results or available
> >
> > I should send upstream perf changes within this week
> 
> Those won't make it into the kernel until 3.8 though.  So for 3.7, I'm
> thinking we should just disable perf libunwind support entirely.  Once
> elf-utils gets its unwinder and the patches for perf hit rawhide we can
> turn it back on.

currently if the libunwind is not found during build time, it's not compiled in

> 
> josh