From: Arnaldo Carvalho de Melo <a...@redhat.com>
[ Upstream commit 4fe94ce1c6ba678b5f12b94bb9996eea4fc99e85 ]
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.hun...@intel.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Luis Cláudio Gonçalves <lclau...@redhat.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Taeung Song <treeze.tae...@gmail.com>
Link: https://lkml.kernel.org/n/tip-3up27pexg5i3exuzqrvt4...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
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 4ce276efe6b4c..fe223fc5c1f85 100755
--- a/tools/perf/tests/shell/trace+probe_vfs_getname.sh
+++ b/tools/perf/tests/shell/trace+probe_vfs_getname.sh
@@ -29,6 +29,10 @@ 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}
--
2.20.1
