From: Namhyung Kim <namhyung@kernel.org>
To: Tony Jones <tonyj@suse.de>
Cc: linux-perf-users@vger.kernel.org, irogers@google.com
Subject: Re: addr2line performance
Date: Mon, 3 Nov 2025 19:16:11 -0800 [thread overview]
Message-ID: <aQlv-w0axiiMrZVD@google.com> (raw)
In-Reply-To: <aQUe14AOt3Yc5Xv0@suse.de>
Hello,
On Fri, Oct 31, 2025 at 01:40:55PM -0700, Tony Jones wrote:
> On Fri, Oct 31, 2025 at 12:39:48PM -0700, Namhyung Kim wrote:
>
> > I think we can just use libdw. I tried it in the past but never
> > finished. :(
>
> This would be interesting.
>
> I asked our toolchain folks if they were aware of libraries
> (other than libllvm and libbfd) that could replace the addr2line+pipe
> (and were license compatible) but I've not heard back from them yet.
>
> I'm happy to look into implementing this if you lack the time. LMK.
Sure, it'd be great if you can work on it. I think it's basically
dwarf_lineaddr() followed by dwarf_linesrc() and dwarf_lineno() but
you also need to check inlined functions.
And probably you want to cache dbginfo of recent binaries to speed up
addr2line processing for the same DSOs.
Thanks,
Namhyung
prev parent reply other threads:[~2025-11-04 3:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-22 18:30 addr2line performance Tony Jones
2025-10-29 15:51 ` Ian Rogers
2025-10-31 17:01 ` Tony Jones
2025-10-31 17:49 ` Ian Rogers
2025-10-31 19:39 ` Namhyung Kim
2025-10-31 20:40 ` Tony Jones
2025-11-04 3:16 ` Namhyung Kim [this message]
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