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From: Holger Freyther <automatic+kernel@freyther.de>
To: linux-kernel@vger.kernel.org
Cc: Holger Hans Peter Freyther <holgar+kernel@google.com>
Subject: [RFC 1/6] perf probe: Do not exclude mangled C++ funcs
Date: Mon, 14 May 2018 12:19:35 +0800	[thread overview]
Message-ID: <20180514041940.96126-2-automatic+kernel@freyther.de> (raw)
In-Reply-To: <20180514041940.96126-1-automatic+kernel@freyther.de>

From: Holger Hans Peter Freyther <holgar+kernel@google.com>

Using --funcs --no-demangle on a C++ binary does not list any of the C++
functions. Change the default filter to not exclude the Common C++ ABI
symbols.

 $ ./perf probe -x ./cxx-example --funcs --no-demangle
 ...
 _ZN9__gnu_cxx13new_allocatorIiEC1Ev
 ...

Signed-off-by: Holger Hans Peter Freyther <holgar+kernel@google.com>
---
 tools/perf/builtin-probe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index c006592..d69f679 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -43,7 +43,7 @@
 #include "util/probe-file.h"
 
 #define DEFAULT_VAR_FILTER "!__k???tab_* & !__crc_*"
-#define DEFAULT_FUNC_FILTER "!_*"
+#define DEFAULT_FUNC_FILTER "!_* | _Z*"
 #define DEFAULT_LIST_FILTER "*"
 
 /* Session management structure */
-- 
2.7.4

  reply	other threads:[~2018-05-14  4:28 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-14  4:19 [RFC 0/6] perf probe: Attempt to improve C++ probing Holger Freyther
2018-05-14  4:19 ` Holger Freyther [this message]
2018-05-14  4:19 ` [RFC 2/6] perf probe: Parse linerange for C++ functions Holger Freyther
2018-05-14  4:19 ` [RFC 3/6] perf probe: Make listing of C++ functions work Holger Freyther
2018-05-14  4:19 ` [RFC 4/6] perf probe: Show variables for C++ functions Holger Freyther
2018-05-14  4:19 ` [RFC 5/6] perf probe: Make listing of variables work " Holger Freyther
2018-05-14  4:19 ` [RFC 6/6] perf probe: Make it possible to add a C++ uprobe Holger Freyther
2018-05-14 13:08 ` [RFC 0/6] perf probe: Attempt to improve C++ probing Masami Hiramatsu
2018-05-14 13:31 ` Masami Hiramatsu
2018-05-15 14:10   ` Arnaldo Carvalho de Melo

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