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Re: [PATCH] Fix dwarf2 unwinding through futex functions v2
- From: Andi Kleen <andi at firstfloor dot org>
- To: libc-alpha at sourceware dot org
- Date: Tue, 04 Mar 2014 16:28:11 -0800
- 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>
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
--
ak@linux.intel.com -- Speaking for myself only