linux-kernel - Re: [PATCH] perf tools: demangle kernel and kernel module symbols too

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Date:	Mon, 27 Jan 2014 16:14:24 +0200
From:	Avi Kivity <avi@...udius-systems.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
CC:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...nel.org>,
	Avi Kivity <avi@...udius-systems.com>
Subject: Re: [PATCH] perf tools: demangle kernel and kernel module symbols
 too

On 01/22/2014 09:58 PM, Avi Kivity wrote:
> Some kernels contain C++ code, and thus their symbols need to be demangled.
> This allows 'perf kvm top' to generate readable output.

Ping?

> Signed-off-by: Avi Kivity <avi@...udius-systems.com>
> ---
>   tools/perf/util/symbol-elf.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
> index 7594567..8f12f0f 100644
> --- a/tools/perf/util/symbol-elf.c
> +++ b/tools/perf/util/symbol-elf.c
> @@ -922,6 +922,7 @@ int dso__load_sym(struct dso *dso, struct map *map,
>   				  (u64)shdr.sh_offset);
>   			sym.st_value -= shdr.sh_addr - shdr.sh_offset;
>   		}
> +new_symbol:
>   		/*
>   		 * We need to figure out if the object was created from C++ sources
>   		 * DWARF DW_compile_unit has this, but we don't always have access
> @@ -933,7 +934,6 @@ int dso__load_sym(struct dso *dso, struct map *map,
>   			if (demangled != NULL)
>   				elf_name = demangled;
>   		}
> -new_symbol:
>   		f = symbol__new(sym.st_value, sym.st_size,
>   				GELF_ST_BIND(sym.st_info), elf_name);
>   		free(demangled);

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