linux-kernel - [tip:perf/core] perf test vfs_getname: Disable ~/.perfconfig to get default output

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <tip-3up27pexg5i3exuzqrvt4m8u@git.kernel.org>
Date:   Thu, 15 Aug 2019 02:18:42 -0700
From:   tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     namhyung@...nel.org, linux-kernel@...r.kernel.org,
        mingo@...nel.org, tglx@...utronix.de, lclaudio@...hat.com,
        hpa@...or.com, adrian.hunter@...el.com, treeze.taeung@...il.com,
        acme@...hat.com, jolsa@...nel.org
Subject: [tip:perf/core] perf test vfs_getname: Disable ~/.perfconfig to get
 default output

Commit-ID:  4fe94ce1c6ba678b5f12b94bb9996eea4fc99e85
Gitweb:     https://git.kernel.org/tip/4fe94ce1c6ba678b5f12b94bb9996eea4fc99e85
Author:     Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Tue, 30 Jul 2019 11:37:44 -0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 12 Aug 2019 16:26:02 -0300

perf test vfs_getname: Disable ~/.perfconfig to get default output

To get the expected output we have to ignore whatever changes the user
has in its ~/.perfconfig file, so set PERF_CONFIG to /dev/null to
achieve that.

Before:

  # egrep 'trace|show_' ~/.perfconfig
  [trace]
  	show_zeros = yes
  	show_duration = no
  	show_timestamp = no
  	show_arg_names = no
  	show_prefix = yes
  # echo $PERF_CONFIG

  # perf test "trace + vfs_getname"
  70: Check open filename arg using perf trace + vfs_getname: FAILED!
  # export PERF_CONFIG=/dev/null
  # perf test "trace + vfs_getname"
  70: Check open filename arg using perf trace + vfs_getname: Ok
  #

After:

  # egrep 'trace|show_' ~/.perfconfig
  [trace]
  	show_zeros = yes
  	show_duration = no
  	show_timestamp = no
  	show_arg_names = no
  	show_prefix = yes
  # echo $PERF_CONFIG

  # perf test "trace + vfs_getname"
  70: Check open filename arg using perf trace + vfs_getname: Ok
  #

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Taeung Song <treeze.taeung@...il.com>
Link: https://lkml.kernel.org/n/tip-3up27pexg5i3exuzqrvt4m8u@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/tests/shell/trace+probe_vfs_getname.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/tests/shell/trace+probe_vfs_getname.sh b/tools/perf/tests/shell/trace+probe_vfs_getname.sh
index 45d269b0157e..11cc2af13f2b 100755
--- a/tools/perf/tests/shell/trace+probe_vfs_getname.sh
+++ b/tools/perf/tests/shell/trace+probe_vfs_getname.sh
@@ -32,6 +32,10 @@ if [ $err -ne 0 ] ; then
 	exit $err
 fi
 
+# Do not use whatever ~/.perfconfig file, it may change the output
+# via trace.{show_timestamp,show_prefix,etc}
+export PERF_CONFIG=/dev/null
+
 trace_open_vfs_getname
 err=$?
 rm -f ${file}