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Commit 328ccdac authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

perf report: Add --no-demangle option 



It's sometimes useful to see undemangled raw symbol name for example
other tools using the perf output to do manipulation of binaries.

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Suggested-by: default avatarWilliam Cohen <wcohen@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: William Cohen <wcohen@redhat.com>
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=55571
Link: http://lkml.kernel.org/r/1364203098-17741-1-git-send-email-namhyung@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 12c08a9f

tools/perf/Documentation/perf-report.txt

+4 −0
Original line number Diff line number Diff line
@@ -206,6 +206,10 @@ OPTIONS 
--group::

	Show event group information together.



--demangle::

	Demangle symbol names to human readable form. It's enabled by default,

	disable with --no-demangle.



SEE ALSO

--------

linkperf:perf-stat[1], linkperf:perf-annotate[1]

tools/perf/builtin-report.c

+2 −0
Original line number Diff line number Diff line
@@ -692,6 +692,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) 
		    "use branch records for histogram filling", parse_branch_mode),

	OPT_STRING(0, "objdump", &objdump_path, "path",

		   "objdump binary to use for disassembly and annotations"),

	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,

		    "Disable symbol demangling"),

	OPT_END()

	};

tools/perf/util/symbol-elf.c

+6 −3
Original line number Diff line number Diff line
@@ -806,9 +806,12 @@ int dso__load_sym(struct dso *dso, struct map *map, 
		 * DWARF DW_compile_unit has this, but we don't always have access

		 * to it...

		 */

		demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI);

		if (symbol_conf.demangle) {

			demangled = bfd_demangle(NULL, elf_name,

						 DMGL_PARAMS | DMGL_ANSI);

			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);

tools/perf/util/symbol.c

+1 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ struct symbol_conf symbol_conf = { 
	.use_modules	  = true,

	.try_vmlinux_path = true,

	.annotate_src	  = true,

	.demangle	  = true,

	.symfs            = "",

};

tools/perf/util/symbol.h

+2 −1
Original line number Diff line number Diff line
@@ -97,7 +97,8 @@ struct symbol_conf { 
			kptr_restrict,

			annotate_asm_raw,

			annotate_src,

			event_group;

			event_group,

			demangle;

	const char	*vmlinux_name,

			*kallsyms_name,

			*source_prefix,