linux-kernel - Re: [PATCH 2/5] perf: unwind: pass symbol source to libunwind

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Date:	Mon, 12 Oct 2015 13:24:23 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Rabin Vincent <rabin.vincent@...s.com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org, Rabin Vincent <rabinv@...s.com>,
	Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH 2/5] perf: unwind: pass symbol source to libunwind

On Sun, Sep 27, 2015 at 08:37:56PM +0200, Rabin Vincent wrote:
> Even if --symfs is used to point to the debug binaries, we send in the
> non-debug filenames to libunwind, which leads to libunwind not finding
> the debug frame.  Fix this.
> 
> Signed-off-by: Rabin Vincent <rabin.vincent@...s.com>

cc-ing Namhyung on this one

jirka

> ---
>  tools/perf/util/unwind-libunwind.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c
> index ef799dc..b93bf7f 100644
> --- a/tools/perf/util/unwind-libunwind.c
> +++ b/tools/perf/util/unwind-libunwind.c
> @@ -363,7 +363,7 @@ find_proc_info(unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
>  			dso__data_put_fd(map->dso);
>  
>  		memset(&di, 0, sizeof(di));
> -		if (dwarf_find_debug_frame(0, &di, ip, base, map->dso->name,
> +		if (dwarf_find_debug_frame(0, &di, ip, base, map->dso->symsrc_filename,
>  					   map->start, map->end))
>  			return dwarf_search_unwind_table(as, ip, &di, pi,
>  							 need_unwind_info, arg);
> -- 
> 1.7.10.4
> 
> --
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