Re: [PATCH] perf: introduce new two options for objdump.

From: Arnaldo Carvalho de Melo
Date: Tue May 19 2015 - 10:08:32 EST

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Em Thu, Jan 29, 2015 at 02:03:46PM +0100, Martin LiÅka escreveu:
> Newly introduced options usedfull for off-box usage:

New useful options for off-box usage:

> --objdump-prefix: specify prefix to add to the absolute paths
> where objdump looks for source files.
> --objdump-prefix-strip: indicate how many initial directory names
> to strip off the hardwired absolute paths, passed to objdump.
> It has no effect without --objdump-prefix.

Does this, for instance, allows one looking at source code + assembly
with debuginfo packages? Is that a usecase you tested this against?

Anyway, sorry for the delay in processing this, fell thru the cracks ;-\

Can you please respin this on top of my current perf/core, at:

git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git

Thanks a lot!

- Arnaldo

> Signed-off-by: Martin Liska <mliska@xxxxxxx>
>
> ---
> tools/perf/Documentation/perf-annotate.txt | 6 ++++++
> tools/perf/Documentation/perf-report.txt | 6 ++++++
> tools/perf/Documentation/perf-top.txt | 10 ++++++++++
> tools/perf/builtin-annotate.c | 5 +++++
> tools/perf/builtin-report.c | 5 +++++
> tools/perf/builtin-top.c | 5 +++++
> tools/perf/util/annotate.c | 8 +++++++-
> tools/perf/util/annotate.h | 2 ++
> 8 files changed, 46 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt
> index e9cd39a..4d2a5be 100644
> --- a/tools/perf/Documentation/perf-annotate.txt
> +++ b/tools/perf/Documentation/perf-annotate.txt
> @@ -90,6 +90,12 @@ OPTIONS
> --objdump=<path>::
> Path to objdump binary.
> +--objdump-prefix=<path>::
> + Specify prefix to add to the absolute paths where objdump looks for source files.
> +
> +--objdump-prefix-strip=<level>::
> + Indicate how many initial directory names to strip off the hardwired absolute paths, passed to objdump. It has no effect without --objdump-prefix.
> +
> --skip-missing::
> Skip symbols that cannot be annotated.
> diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
> index dd7cccd..8e1ed80 100644
> --- a/tools/perf/Documentation/perf-report.txt
> +++ b/tools/perf/Documentation/perf-report.txt
> @@ -279,6 +279,12 @@ OPTIONS
> --objdump=<path>::
> Path to objdump binary.
> +--objdump-prefix=<path>::
> + Specify prefix to add to the absolute paths where objdump looks for source files.
> +
> +--objdump-prefix-strip=<level>::
> + Indicate how many initial directory names to strip off the hardwired absolute paths, passed to objdump. It has no effect without --objdump-prefix.
> +
> --group::
> Show event group information together.
> diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
> index 3265b10..6e71045 100644
> --- a/tools/perf/Documentation/perf-top.txt
> +++ b/tools/perf/Documentation/perf-top.txt
> @@ -157,6 +157,16 @@ Default is to monitor all CPUS.
> --asm-raw::
> Show raw instruction encoding of assembly instructions.
> +--objdump=<path>::
> + Path to objdump binary.
> +
> +--objdump-prefix=<path>::
> + Specify prefix to add to the absolute paths where objdump looks for source files.
> +
> +--objdump-prefix-strip=<level>::
> + Indicate how many initial directory names to strip off the hardwired absolute paths, passed to objdump. It has no effect without --objdump-prefix.
> +
> +
> -g::
> Enables call-graph (stack chain/backtrace) recording.
> diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
> index 747f861..25b84b1 100644
> --- a/tools/perf/builtin-annotate.c
> +++ b/tools/perf/builtin-annotate.c
> @@ -322,6 +322,11 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused)
> "Specify disassembler style (e.g. -M intel for intel syntax)"),
> OPT_STRING(0, "objdump", &objdump_path, "path",
> "objdump binary to use for disassembly and annotations"),
> + OPT_STRING(0, "objdump-prefix", &objdump_prefix_path, "path",
> + "prefix to the absolute paths where objdump looks for source files"),
> + OPT_STRING(0, "objdump-prefix-strip", &objdump_prefix_strip, "level",
> + "Indicate how many initial directory names to strip off the hardwired "
> + "absolute paths, passed to objdump."),
> OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
> "Show event group information together"),
> OPT_END()
> diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
> index 072ae8a..c4f2c2f 100644
> --- a/tools/perf/builtin-report.c
> +++ b/tools/perf/builtin-report.c
> @@ -712,6 +712,11 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
> "add last branch records to call history"),
> OPT_STRING(0, "objdump", &objdump_path, "path",
> "objdump binary to use for disassembly and annotations"),
> + OPT_STRING(0, "objdump-prefix", &objdump_prefix_path, "path",
> + "prefix to the absolute paths where objdump looks for source files"),
> + OPT_STRING(0, "objdump-prefix-strip", &objdump_prefix_strip, "level",
> + "Indicate how many initial directory names to strip off the hardwired "
> + "absolute paths, passed to objdump."),
> OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
> "Disable symbol demangling"),
> OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
> diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> index 616f0fc..ac70949 100644
> --- a/tools/perf/builtin-top.c
> +++ b/tools/perf/builtin-top.c
> @@ -1147,6 +1147,11 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
> "Enable kernel symbol demangling"),
> OPT_STRING(0, "objdump", &objdump_path, "path",
> "objdump binary to use for disassembly and annotations"),
> + OPT_STRING(0, "objdump-prefix", &objdump_prefix_path, "path",
> + "prefix to the absolute paths where objdump looks for source files"),
> + OPT_STRING(0, "objdump-prefix-strip", &objdump_prefix_strip, "level",
> + "Indicate how many initial directory names to strip off the hardwired "
> + "absolute paths, passed to objdump."),
> OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
> "Specify disassembler style (e.g. -M intel for intel syntax)"),
> OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"),
> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
> index 79999ce..ec62c0b 100644
> --- a/tools/perf/util/annotate.c
> +++ b/tools/perf/util/annotate.c
> @@ -23,6 +23,8 @@
> const char *disassembler_style;
> const char *objdump_path;
> +const char *objdump_prefix_path;
> +const char *objdump_prefix_strip;
> static regex_t file_lineno;
> static struct ins *ins__find(const char *name);
> @@ -1001,12 +1003,16 @@ fallback:
> }
> snprintf(command, sizeof(command),
> - "%s %s%s --start-address=0x%016" PRIx64
> + "%s %s%s %s%s %s%s --start-address=0x%016" PRIx64
> " --stop-address=0x%016" PRIx64
> " -l -d %s %s -C %s 2>/dev/null|grep -v %s|expand",
> objdump_path ? objdump_path : "objdump",
> disassembler_style ? "-M " : "",
> disassembler_style ? disassembler_style : "",
> + objdump_prefix_path ? "--prefix=" : "",
> + objdump_prefix_path ? objdump_prefix_path : "",
> + objdump_prefix_strip ? "--prefix-strip=" : "",
> + objdump_prefix_strip ? objdump_prefix_strip : "",
> map__rip_2objdump(map, sym->start),
> map__rip_2objdump(map, sym->end),
> symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
> diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
> index cadbdc9..fd9782e 100644
> --- a/tools/perf/util/annotate.h
> +++ b/tools/perf/util/annotate.h
> @@ -168,5 +168,7 @@ static inline int symbol__tui_annotate(struct symbol *sym __maybe_unused,
> #endif
> extern const char *disassembler_style;
> +extern const char *objdump_prefix_path;
> +extern const char *objdump_prefix_strip;
> #endif /* __PERF_ANNOTATE_H */
> --
> 2.1.2
--
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Next message: Tomeu Vizoso: "[PATCH v3 1/2] PM / sleep: Add power.direct_complete_default flag"
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