linux-kernel - [PATCH 3/3] perf probe: Do not show @plt function by default

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Message-Id: <162532653450.393143.12621329879630677469.stgit@devnote2>
Date:   Sun,  4 Jul 2021 00:35:34 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     linux-perf-users@...r.kernel.org,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Stefan Liebler <stli@...ux.ibm.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] perf probe: Do not show @plt function by default

From: Masami Hiramatsu <mhriamat@...nel.org>

Fix the perf-probe --functions option do not show the PLT
stub symbols (*@plt) by default.

  -----
  $ ./perf probe -x /usr/lib64/libc-2.33.so -F | head
  a64l
  abort
  abs
  accept
  accept4
  access
  acct
  addmntent
  addseverity
  adjtime
  -----

Reported-by: Thomas Richter <tmricht@...ux.ibm.com>
Signed-off-by: Masami Hiramatsu <mhriamat@...nel.org>
---
 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 2bfd41df621c..e1dd51f2874b 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -31,7 +31,7 @@
 #include <linux/zalloc.h>
 
 #define DEFAULT_VAR_FILTER "!__k???tab_* & !__crc_*"
-#define DEFAULT_FUNC_FILTER "!_*"
+#define DEFAULT_FUNC_FILTER "!_* & !*@plt"
 #define DEFAULT_LIST_FILTER "*"
 
 /* Session management structure */