linux-kernel - [tip:perf/core] perf tests: Fix record+probe_libc_inet

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Date:   Tue, 9 Jul 2019 04:31:23 -0700
From:   tip-bot for Seeteena Thoufeek <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mpetlan@...hat.com, mingo@...nel.org, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, hpa@...or.com, kim.phillips@....com,
        alexander.shishkin@...ux.intel.com, peterz@...radead.org,
        jolsa@...hat.com, brueckner@...ux.ibm.com, namhyung@...nel.org,
        acme@...hat.com, s1seetee@...ux.vnet.ibm.com,
        sandipan@...ux.ibm.com
Subject: [tip:perf/core] perf tests: Fix record+probe_libc_inet_pton.sh for
 powerpc64

Commit-ID:  bff5a556c149804de29347a88a884d25e4e4e3a2
Gitweb:     https://git.kernel.org/tip/bff5a556c149804de29347a88a884d25e4e4e3a2
Author:     Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>
AuthorDate: Thu, 27 Jun 2019 15:46:54 +0530
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Sat, 6 Jul 2019 14:31:01 -0300

perf tests: Fix record+probe_libc_inet_pton.sh for powerpc64

'probe libc's inet_pton & backtrace it with ping' testcase sometimes
fails on powerpc because distro ping binary does not have symbol
information and thus it prints "[unknown]" function name in the
backtrace.

Accept "[unknown]" as valid function name for powerpc as well.

 # perf test -v "probe libc's inet_pton & backtrace it with ping"

Before:

  59: probe libc's inet_pton & backtrace it with ping       :
  --- start ---
  test child forked, pid 79695
  ping 79718 [077] 96483.787025: probe_libc:inet_pton: (7fff83a754c8)
  7fff83a754c8 __GI___inet_pton+0x8 (/usr/lib64/power9/libc-2.28.so)
  7fff83a2b7a0 gaih_inet.constprop.7+0x1020
  (/usr/lib64/power9/libc-2.28.so)
  7fff83a2c170 getaddrinfo+0x160 (/usr/lib64/power9/libc-2.28.so)
  1171830f4 [unknown] (/usr/bin/ping)
  FAIL: expected backtrace entry
  ".*\+0x[[:xdigit:]]+[[:space:]]\(.*/bin/ping.*\)$"
  got "1171830f4 [unknown] (/usr/bin/ping)"
  test child finished with -1
  ---- end ----
  probe libc's inet_pton & backtrace it with ping: FAILED!

After:

  59: probe libc's inet_pton & backtrace it with ping       :
  --- start ---
  test child forked, pid 79085
  ping 79108 [045] 96400.214177: probe_libc:inet_pton: (7fffbb9654c8)
  7fffbb9654c8 __GI___inet_pton+0x8 (/usr/lib64/power9/libc-2.28.so)
  7fffbb91b7a0 gaih_inet.constprop.7+0x1020
  (/usr/lib64/power9/libc-2.28.so)
  7fffbb91c170 getaddrinfo+0x160 (/usr/lib64/power9/libc-2.28.so)
  132e830f4 [unknown] (/usr/bin/ping)
  test child finished with 0
  ---- end ----
  probe libc's inet_pton & backtrace it with ping: Ok

Signed-off-by: Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>
Reviewed-by: Kim Phillips <kim.phillips@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Hendrik Brueckner <brueckner@...ux.ibm.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Michael Petlan <mpetlan@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Sandipan Das <sandipan@...ux.ibm.com>
Fixes: 1632936480a5 ("perf tests: Fix record+probe_libc_inet_pton.sh without ping's debuginfo")
Link: http://lkml.kernel.org/r/1561630614-3216-1-git-send-email-s1seetee@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/tests/shell/record+probe_libc_inet_pton.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
index 61c9f8fc6fa1..58a99a292930 100755
--- a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
+++ b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
@@ -44,7 +44,7 @@ trace_libc_inet_pton_backtrace() {
 		eventattr='max-stack=4'
 		echo "gaih_inet.*\+0x[[:xdigit:]]+[[:space:]]\($libc\)$" >> $expected
 		echo "getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\($libc\)$" >> $expected
-		echo ".*\+0x[[:xdigit:]]+[[:space:]]\(.*/bin/ping.*\)$" >> $expected
+		echo ".*(\+0x[[:xdigit:]]+|\[unknown\])[[:space:]]\(.*/bin/ping.*\)$" >> $expected
 		;;
 	*)
 		eventattr='max-stack=3'