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Date: Thu, 19 Sep 2013 19:03:43 +0200
From: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
To: Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
Peter Zijlstra <peterz@...radead.org>,
Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
Paul Mackerras <paulus@...ba.org>,
Ingo Molnar <mingo@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Waiman Long <Waiman.Long@...com>,
Stephane Eranian <eranian@...gle.com>,
Jiri Olsa <jolsa@...hat.com>, David Ahern <dsahern@...il.com>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv3] perf: Support for Openembedded/Yocto -dbg packages
Anything else to fix on this patch?
On Wed, Sep 18, 2013 at 3:56 PM, Ricardo Ribalda Delgado
<ricardo.ribalda@...il.com> wrote:
> On OpenEmbedded the symbol files are located under a .debug folder on
> the same folder as the binary file.
>
> This patch adds support for such files.
>
> Without this patch on perf top you can see:
>
> no symbols found in /usr/lib/gstreamer-1.0/libtheoraenc.so.1.1.2, maybe install
> a debug package?
>
> 84.56% libtheoraenc.so.1.1.2 [.] 0x000000000000b346
>
> With this patch symbols are shown:
>
> 19.06% libtheoraenc.so.1.1.2 [.] oc_int_frag_satd_thresh_mmxext
> 9.76% libtheoraenc.so.1.1.2 [.] oc_analyze_mb_mode_luma
> 5.58% libtheoraenc.so.1.1.2 [.] oc_qii_state_advance
> 4.84% libtheoraenc.so.1.1.2 [.] oc_enc_tokenize_ac
> ...
>
> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
> ---
>
> v2: Changes proposed by Ingo Molnar
>
> -Improve changeset
> -Improve multi-snprintf readability
> -Code Style
>
> v3: Changes proposed by Ingo Molnar, Arnaldo Carvalho de Melo and Peter Zijlstra
>
> -Code Style
> -Use scnprintf
>
>
> tools/perf/util/dso.c | 49 +++++++++++++++++++++++++++++++++++-------------
> tools/perf/util/dso.h | 1 +
> tools/perf/util/symbol.c | 1 +
> 3 files changed, 38 insertions(+), 13 deletions(-)
>
> diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
> index e3c1ff8..6bfc8aa 100644
> --- a/tools/perf/util/dso.c
> +++ b/tools/perf/util/dso.c
> @@ -7,19 +7,20 @@
> char dso__symtab_origin(const struct dso *dso)
> {
> static const char origin[] = {
> - [DSO_BINARY_TYPE__KALLSYMS] = 'k',
> - [DSO_BINARY_TYPE__VMLINUX] = 'v',
> - [DSO_BINARY_TYPE__JAVA_JIT] = 'j',
> - [DSO_BINARY_TYPE__DEBUGLINK] = 'l',
> - [DSO_BINARY_TYPE__BUILD_ID_CACHE] = 'B',
> - [DSO_BINARY_TYPE__FEDORA_DEBUGINFO] = 'f',
> - [DSO_BINARY_TYPE__UBUNTU_DEBUGINFO] = 'u',
> - [DSO_BINARY_TYPE__BUILDID_DEBUGINFO] = 'b',
> - [DSO_BINARY_TYPE__SYSTEM_PATH_DSO] = 'd',
> - [DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE] = 'K',
> - [DSO_BINARY_TYPE__GUEST_KALLSYMS] = 'g',
> - [DSO_BINARY_TYPE__GUEST_KMODULE] = 'G',
> - [DSO_BINARY_TYPE__GUEST_VMLINUX] = 'V',
> + [DSO_BINARY_TYPE__KALLSYMS] = 'k',
> + [DSO_BINARY_TYPE__VMLINUX] = 'v',
> + [DSO_BINARY_TYPE__JAVA_JIT] = 'j',
> + [DSO_BINARY_TYPE__DEBUGLINK] = 'l',
> + [DSO_BINARY_TYPE__BUILD_ID_CACHE] = 'B',
> + [DSO_BINARY_TYPE__FEDORA_DEBUGINFO] = 'f',
> + [DSO_BINARY_TYPE__UBUNTU_DEBUGINFO] = 'u',
> + [DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO] = 'o',
> + [DSO_BINARY_TYPE__BUILDID_DEBUGINFO] = 'b',
> + [DSO_BINARY_TYPE__SYSTEM_PATH_DSO] = 'd',
> + [DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE] = 'K',
> + [DSO_BINARY_TYPE__GUEST_KALLSYMS] = 'g',
> + [DSO_BINARY_TYPE__GUEST_KMODULE] = 'G',
> + [DSO_BINARY_TYPE__GUEST_VMLINUX] = 'V',
> };
>
> if (dso == NULL || dso->symtab_type == DSO_BINARY_TYPE__NOT_FOUND)
> @@ -64,6 +65,28 @@ int dso__binary_type_file(struct dso *dso, enum dso_binary_type type,
> symbol_conf.symfs, dso->long_name);
> break;
>
> + case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO:
> + {
> + char *last_slash;
> + size_t len;
> + size_t dir_size;
> +
> + last_slash = dso->long_name + dso->long_name_len;
> + while (last_slash != dso->long_name && *last_slash != '/')
> + last_slash--;
> +
> + len = scnprintf(file, size, "%s", symbol_conf.symfs);
> + dir_size = last_slash - dso->long_name + 2;
> + if (dir_size > (size - len)) {
> + ret = -1;
> + break;
> + }
> + len += scnprintf(file + len, dir_size, "%s", dso->long_name);
> + len += scnprintf(file + len , size - len, ".debug%s",
> + last_slash);
> + break;
> + }
> +
> case DSO_BINARY_TYPE__BUILDID_DEBUGINFO:
> if (!dso->has_build_id) {
> ret = -1;
> diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
> index b793053..dbd9241 100644
> --- a/tools/perf/util/dso.h
> +++ b/tools/perf/util/dso.h
> @@ -23,6 +23,7 @@ enum dso_binary_type {
> DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE,
> DSO_BINARY_TYPE__KCORE,
> DSO_BINARY_TYPE__GUEST_KCORE,
> + DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO,
> DSO_BINARY_TYPE__NOT_FOUND,
> };
>
> diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
> index 7eb0362..cd1dcc4 100644
> --- a/tools/perf/util/symbol.c
> +++ b/tools/perf/util/symbol.c
> @@ -51,6 +51,7 @@ static enum dso_binary_type binary_type_symtab[] = {
> DSO_BINARY_TYPE__SYSTEM_PATH_DSO,
> DSO_BINARY_TYPE__GUEST_KMODULE,
> DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE,
> + DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO,
> DSO_BINARY_TYPE__NOT_FOUND,
> };
>
> --
> 1.8.4.rc3
>
--
Ricardo Ribalda
--
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