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-rw-r--r--tools/perf/Documentation/perf-report.txt4
-rw-r--r--tools/perf/builtin-report.c2
-rw-r--r--tools/perf/util/symbol-elf.c9
-rw-r--r--tools/perf/util/symbol.c1
-rw-r--r--tools/perf/util/symbol.h3
5 files changed, 15 insertions, 4 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 02284a0067f0..71f15510ca0b 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -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]
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 296bd219977a..b5ea26cc7eb1 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -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()
};
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 54efcb5659ac..4b12bf850325 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -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 (demangled != NULL)
- elf_name = demangled;
+ 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);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index e6432d85b43d..8cf3b5426a9a 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -36,6 +36,7 @@ struct symbol_conf symbol_conf = {
.use_modules = true,
.try_vmlinux_path = true,
.annotate_src = true,
+ .demangle = true,
.symfs = "",
};
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index b62ca37c4b77..d7654c23861a 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -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,