linux-kernel - Re: [PATCH] perf: Fix looking up dwarf unwind stack info

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Date:   Wed, 18 Jan 2017 14:10:50 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@...ia.com>
Cc:     linux-kernel@...r.kernel.org, namhyung@...nel.org, acme@...hat.com,
        Masami Hiramatsu <mhiramat@...nel.org>,
        "Sverdlin, Alexander (Nokia - DE/Ulm)" <alexander.sverdlin@...ia.com>
Subject: Re: [PATCH] perf: Fix looking up dwarf unwind stack info

On Tue, Jan 17, 2017 at 03:50:35PM +0100, Matija Glavinic Pecotic wrote:

SNIP

>  extern int
>  UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as,
> @@ -297,15 +298,58 @@ static int read_unwind_spec_debug_frame(struct dso *dso,
>  	int fd;
>  	u64 ofs = dso->data.debug_frame_offset;
>  
> +	/* debug_frame can reside in:
> +	 *  - dso
> +	 *  - debug pointed by symsrc_filename
> +	 *  - gnu_debuglink, which doesn't necessary
> +	 *    has to be pointed by symsrc_filename
> +	 */

looks like we could use this in other parts,
like when __get_srcline and similar

Acked-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka