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

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

[Martin Liška]

Newly introduced options usedfull 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.

Signed-off-by: Martin Liska <mliska@suse.cz>

---
  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

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

[Arnaldo Carvalho de Melo]

Em Thu, Jan 29, 2015 at 02:03:46PM +0100, Martin Liška 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@suse.cz>
> 
> ---
>  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

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

[David Ahern]

On 5/19/15 8:08 AM, Arnaldo Carvalho de Melo wrote:
> Em Thu, Jan 29, 2015 at 02:03:46PM +0100, Martin Liška 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!

Perhaps it should be generalized a bit? Right now we have symfs for the 
location of the tree for binaries. What about a srcfs for a source tree?

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

[Arnaldo Carvalho de Melo]

Em Tue, May 19, 2015 at 08:29:58AM -0600, David Ahern escreveu:
> On 5/19/15 8:08 AM, Arnaldo Carvalho de Melo wrote:
> >Em Thu, Jan 29, 2015 at 02:03:46PM +0100, Martin Liška 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
 
> Perhaps it should be generalized a bit? Right now we have symfs for the
> location of the tree for binaries. What about a srcfs for a source tree?

That is a good idea indeed.

- Arnaldo

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

[Martin Liška]

[-- Attachment #1: Type: text/plain, Size: 1952 bytes --]

On 05/19/2015 04:33 PM, Arnaldo Carvalho de Melo wrote:
> Em Tue, May 19, 2015 at 08:29:58AM -0600, David Ahern escreveu:
>> On 5/19/15 8:08 AM, Arnaldo Carvalho de Melo wrote:
>>> Em Thu, Jan 29, 2015 at 02:03:46PM +0100, Martin Liška 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
>
>> Perhaps it should be generalized a bit? Right now we have symfs for the
>> location of the tree for binaries. What about a srcfs for a source tree?
>
> That is a good idea indeed.
>
> - Arnaldo
>

Hello.

I was motivated to be able to annotate source code, realized out-of-box. More precisely, on a machine A
I run perf record, I moved the report file to machine B and I use these options to annotate source code.

Let's consider source code location

Machine A:
P1=/a/b/c/d/source-files

Machine B:
P2=/x/y/z/source-files

Using just a single option (--objdump-prefix) works, but one how to place source code on machine B to:
/a/b/c/d/x/y/z/source-files

That's quite cumbersome, thus adding second option, one can strip '/a/b/c/d', with --objdump-prefix-strip=4.
Still, no ideal, but it's quite flexible. A new 'srcfs' can used as --objdump-prefix, am I right?

Respun version of patch is attached.

Thanks,
Martin


[-- Attachment #2: perf-introduce-new-two-options-for-objump-v2.patch --]
[-- Type: text/x-patch, Size: 6447 bytes --]

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 c33b69f..2b3cb21 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -286,6 +286,12 @@ 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 9e5b07eb..2f269e9 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 b57a027..9f0690d 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -324,6 +324,11 @@ 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 56025d9..3328fb8 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -715,6 +715,11 @@ 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 6b98742..24bdb08 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1150,6 +1150,11 @@ 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 7f5bdfc..c5373f4 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);
@@ -1039,12 +1041,16 @@ 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 */

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

[Arnaldo Carvalho de Melo]

Em Wed, May 20, 2015 at 03:02:01PM +0200, Martin Liška escreveu:
> On 05/19/2015 04:33 PM, Arnaldo Carvalho de Melo wrote:
> >Em Tue, May 19, 2015 at 08:29:58AM -0600, David Ahern escreveu:
> >>On 5/19/15 8:08 AM, Arnaldo Carvalho de Melo wrote:
> >>>Em Thu, Jan 29, 2015 at 02:03:46PM +0100, Martin Liška 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
> >
> >>Perhaps it should be generalized a bit? Right now we have symfs for the
> >>location of the tree for binaries. What about a srcfs for a source tree?
> >
> >That is a good idea indeed.
> >
> >- Arnaldo
> >
> 
> Hello.
> 
> I was motivated to be able to annotate source code, realized out-of-box. More precisely, on a machine A
> I run perf record, I moved the report file to machine B and I use these options to annotate source code.
> 
> Let's consider source code location
> 
> Machine A:
> P1=/a/b/c/d/source-files
> 
> Machine B:
> P2=/x/y/z/source-files
> 
> Using just a single option (--objdump-prefix) works, but one how to place source code on machine B to:
> /a/b/c/d/x/y/z/source-files
> 
> That's quite cumbersome, thus adding second option, one can strip '/a/b/c/d', with --objdump-prefix-strip=4.
> Still, no ideal, but it's quite flexible. A new 'srcfs' can used as --objdump-prefix, am I right?

I guess so, and yeah, the feature implemented in your patch has value,
thanks for collaborating! It is just that it may fit better as a
complement to the --symfs stuff, that is also for off-box analysis:

--symfs=<directory>::
        Look for files with symbols relative to this directory.

> Respun version of patch is attached.

Thanks, will wait for further discussion before applying,

- Arnaldo
 
> Thanks,
> Martin
> 

> 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 c33b69f..2b3cb21 100644
> --- a/tools/perf/Documentation/perf-report.txt
> +++ b/tools/perf/Documentation/perf-report.txt
> @@ -286,6 +286,12 @@ 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 9e5b07eb..2f269e9 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 b57a027..9f0690d 100644
> --- a/tools/perf/builtin-annotate.c
> +++ b/tools/perf/builtin-annotate.c
> @@ -324,6 +324,11 @@ 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 56025d9..3328fb8 100644
> --- a/tools/perf/builtin-report.c
> +++ b/tools/perf/builtin-report.c
> @@ -715,6 +715,11 @@ 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 6b98742..24bdb08 100644
> --- a/tools/perf/builtin-top.c
> +++ b/tools/perf/builtin-top.c
> @@ -1150,6 +1150,11 @@ 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 7f5bdfc..c5373f4 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);
> @@ -1039,12 +1041,16 @@ 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 */

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

[Martin Liška]

On 05/20/2015 03:05 PM, Arnaldo Carvalho de Melo wrote:
> Em Wed, May 20, 2015 at 03:02:01PM +0200, Martin Liška escreveu:
>> On 05/19/2015 04:33 PM, Arnaldo Carvalho de Melo wrote:
>>> Em Tue, May 19, 2015 at 08:29:58AM -0600, David Ahern escreveu:
>>>> On 5/19/15 8:08 AM, Arnaldo Carvalho de Melo wrote:
>>>>> Em Thu, Jan 29, 2015 at 02:03:46PM +0100, Martin Liška 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
>>>
>>>> Perhaps it should be generalized a bit? Right now we have symfs for the
>>>> location of the tree for binaries. What about a srcfs for a source tree?
>>>
>>> That is a good idea indeed.
>>>
>>> - Arnaldo
>>>
>>
>> Hello.
>>
>> I was motivated to be able to annotate source code, realized out-of-box. More precisely, on a machine A
>> I run perf record, I moved the report file to machine B and I use these options to annotate source code.
>>
>> Let's consider source code location
>>
>> Machine A:
>> P1=/a/b/c/d/source-files
>>
>> Machine B:
>> P2=/x/y/z/source-files
>>
>> Using just a single option (--objdump-prefix) works, but one how to place source code on machine B to:
>> /a/b/c/d/x/y/z/source-files
>>
>> That's quite cumbersome, thus adding second option, one can strip '/a/b/c/d', with --objdump-prefix-strip=4.
>> Still, no ideal, but it's quite flexible. A new 'srcfs' can used as --objdump-prefix, am I right?
> 
> I guess so, and yeah, the feature implemented in your patch has value,
> thanks for collaborating! It is just that it may fit better as a
> complement to the --symfs stuff, that is also for off-box analysis:
> 
> --symfs=<directory>::
>         Look for files with symbols relative to this directory.
> 
>> Respun version of patch is attached.
> 
> Thanks, will wait for further discussion before applying,
> 
> - Arnaldo

Hello Arnaldo.

Are we going to wait any longer? It looks there's no discussion effort in this thread ;)

Thanks,
Martin

>  
>> Thanks,
>> Martin
>>
> 
>> 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 c33b69f..2b3cb21 100644
>> --- a/tools/perf/Documentation/perf-report.txt
>> +++ b/tools/perf/Documentation/perf-report.txt
>> @@ -286,6 +286,12 @@ 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 9e5b07eb..2f269e9 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 b57a027..9f0690d 100644
>> --- a/tools/perf/builtin-annotate.c
>> +++ b/tools/perf/builtin-annotate.c
>> @@ -324,6 +324,11 @@ 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 56025d9..3328fb8 100644
>> --- a/tools/perf/builtin-report.c
>> +++ b/tools/perf/builtin-report.c
>> @@ -715,6 +715,11 @@ 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 6b98742..24bdb08 100644
>> --- a/tools/perf/builtin-top.c
>> +++ b/tools/perf/builtin-top.c
>> @@ -1150,6 +1150,11 @@ 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 7f5bdfc..c5373f4 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);
>> @@ -1039,12 +1041,16 @@ 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 */
> 

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

[Arnaldo Carvalho de Melo]

Em Mon, Jun 01, 2015 at 01:10:06PM +0200, Martin Liška escreveu:
> On 05/20/2015 03:05 PM, Arnaldo Carvalho de Melo wrote:
> > Em Wed, May 20, 2015 at 03:02:01PM +0200, Martin Liška escreveu:
> >> On 05/19/2015 04:33 PM, Arnaldo Carvalho de Melo wrote:
> >>> Em Tue, May 19, 2015 at 08:29:58AM -0600, David Ahern escreveu:

<SNIP>

> >>>> Perhaps it should be generalized a bit? Right now we have symfs for the
> >>>> location of the tree for binaries. What about a srcfs for a source tree?
> >>>
> >>> That is a good idea indeed.
> >>
> >> I was motivated to be able to annotate source code, realized out-of-box. More precisely, on a machine A
> >> I run perf record, I moved the report file to machine B and I use these options to annotate source code.

<SNIP>

> > I guess so, and yeah, the feature implemented in your patch has value,
> > thanks for collaborating! It is just that it may fit better as a
> > complement to the --symfs stuff, that is also for off-box analysis:

> > --symfs=<directory>::
> >         Look for files with symbols relative to this directory.

> > Thanks, will wait for further discussion before applying,

> Are we going to wait any longer? It looks there's no discussion effort in this thread ;)

I was waiting for you to follow thru on David's suggestion.

- Arnaldo

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

[Martin Liška]

On 06/01/2015 02:54 PM, Arnaldo Carvalho de Melo wrote:
> Em Mon, Jun 01, 2015 at 01:10:06PM +0200, Martin Liška escreveu:
>> On 05/20/2015 03:05 PM, Arnaldo Carvalho de Melo wrote:
>>> Em Wed, May 20, 2015 at 03:02:01PM +0200, Martin Liška escreveu:
>>>> On 05/19/2015 04:33 PM, Arnaldo Carvalho de Melo wrote:
>>>>> Em Tue, May 19, 2015 at 08:29:58AM -0600, David Ahern escreveu:
> 
> <SNIP>
> 
>>>>>> Perhaps it should be generalized a bit? Right now we have symfs for the
>>>>>> location of the tree for binaries. What about a srcfs for a source tree?
>>>>>
>>>>> That is a good idea indeed.
>>>>
>>>> I was motivated to be able to annotate source code, realized out-of-box. More precisely, on a machine A
>>>> I run perf record, I moved the report file to machine B and I use these options to annotate source code.
> 
> <SNIP>
> 
>>> I guess so, and yeah, the feature implemented in your patch has value,
>>> thanks for collaborating! It is just that it may fit better as a
>>> complement to the --symfs stuff, that is also for off-box analysis:
> 
>>> --symfs=<directory>::
>>>         Look for files with symbols relative to this directory.
> 
>>> Thanks, will wait for further discussion before applying,
> 
>> Are we going to wait any longer? It looks there's no discussion effort in this thread ;)
> 
> I was waiting for you to follow thru on David's suggestion.
> 
> - Arnaldo
> 

Ah, I see.
My answer what kind of that a single new option is no going to enough. As explained in my previous
post, one needs to cut N components of a path and append a different path.

I would follow option names starting with --objdump prefix.

Thanks,
Martin

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

[Arnaldo Carvalho de Melo]

Em Mon, Jun 01, 2015 at 03:58:16PM +0200, Martin Liška escreveu:
> On 06/01/2015 02:54 PM, Arnaldo Carvalho de Melo wrote:
> > Em Mon, Jun 01, 2015 at 01:10:06PM +0200, Martin Liška escreveu:
> >> On 05/20/2015 03:05 PM, Arnaldo Carvalho de Melo wrote:
> >>> Em Wed, May 20, 2015 at 03:02:01PM +0200, Martin Liška escreveu:
> >>>> On 05/19/2015 04:33 PM, Arnaldo Carvalho de Melo wrote:
> >>>>> Em Tue, May 19, 2015 at 08:29:58AM -0600, David Ahern escreveu:
> > 
> > <SNIP>
> > 
> >>>>>> Perhaps it should be generalized a bit? Right now we have symfs for the
> >>>>>> location of the tree for binaries. What about a srcfs for a source tree?
> >>>>>
> >>>>> That is a good idea indeed.
> >>>>
> >>>> I was motivated to be able to annotate source code, realized out-of-box. More precisely, on a machine A
> >>>> I run perf record, I moved the report file to machine B and I use these options to annotate source code.
> > 
> > <SNIP>
> > 
> >>> I guess so, and yeah, the feature implemented in your patch has value,
> >>> thanks for collaborating! It is just that it may fit better as a
> >>> complement to the --symfs stuff, that is also for off-box analysis:
> > 
> >>> --symfs=<directory>::
> >>>         Look for files with symbols relative to this directory.
> > 
> >>> Thanks, will wait for further discussion before applying,
> > 
> >> Are we going to wait any longer? It looks there's no discussion effort in this thread ;)
> > 
> > I was waiting for you to follow thru on David's suggestion.

> Ah, I see.
> My answer what kind of that a single new option is no going to enough. As explained in my previous
> post, one needs to cut N components of a path and append a different path.
> 
> I would follow option names starting with --objdump prefix.

David, do you agree?

- Arnaldo