linux-kernel - [PATCH] perf: make annotate demangle symbols

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Date:	Thu, 3 Jun 2010 15:50:01 +0200
From:	Stephane Eranian <eranian@...gle.com>
To:	linux-kernel@...r.kernel.org
Cc:	peterz@...radead.org, mingo@...e.hu, paulus@...ba.org,
	davem@...emloft.net, fweisbec@...il.com, acme@...radead.org,
	perfmon2-devel@...ts.sf.net, eranian@...il.com, eranian@...gle.com,
	tzanussi@...il.com
Subject: [PATCH] perf: make annotate demangle symbols

Perf report is demangling symbols but not annotate.
The former uses internal demangling via libbdf or
libiberty. The latter executes objdump which by default
does not demangle symbols.

This patch adds the -C option to the objdump cmdline
to enable symbol demangling.

Signed-off-by: Stephane Eranian <eranian@...gle.com>

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 07f89b6..9e6baad 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1037,7 +1037,7 @@ fallback:
 		 dso, dso->long_name, sym, sym->name);
 
 	snprintf(command, sizeof(command),
-		 "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s|grep -v %s|expand",
+		 "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS -C %s|grep -v %s|expand",
 		 map__rip_2objdump(map, sym->start),
 		 map__rip_2objdump(map, sym->end),
 		 filename, filename);
--
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