linux-kernel - [PATCH] perf script: Add --[no-]-demangle/--[no-]-demangle-kernel

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Date:	Wed, 26 Aug 2015 12:18:15 -0700
From:	Yannick Brosseau <scientist@...com>
To:	<ak@...ux.intel.com>, <acme@...nel.org>, <jolsa@...nel.org>
CC:	<linux-kernel@...r.kernel.org>, Mark Drayton <mbd@...com>,
	Yannick Brosseau <scientist@...com>
Subject: [PATCH] perf script: Add --[no-]-demangle/--[no-]-demangle-kernel

From: Mark Drayton <mbd@...com>

Summary: Sometimes when post-processing output from `perf script` one
does not want to demangle C++ symbol names. Add an option to allow this.
Also add --[no-]demangle-kernel to be consistent with top/report/probe.

Signed-off-by: Mark Drayton <mbd@...com>
Signed-off-by: Yannick Brosseau <scientist@...com>
---
 tools/perf/Documentation/perf-script.txt | 7 +++++++
 tools/perf/builtin-script.c              | 4 ++++
 2 files changed, 11 insertions(+)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index c82df57..347c73a 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -222,6 +222,13 @@ OPTIONS
 --show-mmap-events
 	Display mmap related events (e.g. MMAP, MMAP2).
 
+--demangle::
+	Demangle symbol names to human readable form. It's enabled by default,
+	disable with --no-demangle.
+
+--demangle-kernel::
+	Demangle kernel symbol names to human readable form (for C++ kernels).
+
 --header
 	Show perf.data header.
 
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 24809787..f3b3ba0 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1622,6 +1622,10 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
 	OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
 			    "Instruction Tracing options",
 			    itrace_parse_synth_opts),
+	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
+		    "Enable symbol demangling"),
+	OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
+		    "Enable kernel symbol demangling"),
 	OPT_END()
 	};
 	const char * const script_subcommands[] = { "record", "report", NULL };
-- 
2.1.4

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