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Re: [PATCH] Fix dwarf2 unwinding through futex functions v2
- From: OndÅej BÃlka <neleai at seznam dot cz>
- To: Carlos O'Donell <carlos at redhat dot com>
- Cc: Andi Kleen <andi at firstfloor dot org>, libc-alpha at sourceware dot org
- Date: Wed, 5 Mar 2014 09:55:13 +0100
- Subject: Re: [PATCH] Fix dwarf2 unwinding through futex functions v2
- Authentication-results: sourceware.org; auth=none
- References: <1383870168-31055-1-git-send-email-andi at firstfloor dot org> <877g895w10 dot fsf at tassilo dot jf dot intel dot com>
On Tue, Mar 04, 2014 at 04:28:11PM -0800, Andi Kleen wrote:
> Andi Kleen <andi@firstfloor.org> writes:
>
> > From: Andi Kleen <ak@linux.intel.com>
> >
> > When profiling programs with lock problems with perf record -g dwarf, libunwind
> > can currently not backtrace through the futex and unlock functions in pthread.
> > This is because they use out of line sections, and those are not correctly
> > described in dwarf2 (I believe needs dwarf3 or 4).
>
> What happened to this patch? I had assumed it was committed, but it's
> not in current master and the profiling problem is still there.
>
> -Andi
>
Looks like it was acked by carlos, did you commit it?