[PATCH 1/1] perf test shell probe_vfs_getname: Remove extraneous '=' from probe line number regex

[Arnaldo Carvalho de Melo]

Thomas reported the vfs_getname perf tests failing on s/390, it seems it
was just to some extraneous '=' somehow getting into the regexp, remove
it, now:

  root@x1:~# perf test getname
   91: Add vfs_getname probe to get syscall args filenames             : Ok
   93: Use vfs_getname probe to get syscall args filenames             : FAILED!
  126: Check open filename arg using perf trace + vfs_getname          : Ok
  root@x1:~#

Second one remains a mistery, have to take some time to nail it down.

Testing it:
  
  root@x1:~# uname -a
  Linux x1 6.10.8-200.fc40.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Sep  4 21:41:11 UTC 2024 x86_64 GNU/Linux
  root@x1:~# result_aname_re="[[:space:]]+([[:digit:]]+)[[:space:]]+result->aname = NULL;"
  root@x1:~# perf probe -L getname_flags 2>&1 | grep -E "$result_aname_re" | sed -r "s/$result_aname_re/\1/"
  73
  root@x1:~# perf probe -L getname_flags 2>&1 | grep -E "$result_aname_re"
       73       result->aname = NULL;
  root@x1:~# line=$(perf probe -L getname_flags 2>&1 | grep -E "$result_aname_re" | sed -r "s/$result_aname_re/\1/")
  eroot@x1:~#
  root@x1:~# echo $line
  73
  root@x1:~#

Reported-by: Thomas Richter <tmricht@xxxxxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Ian Rogers <irogers@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>,
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/tests/shell/lib/probe_vfs_getname.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/tests/shell/lib/probe_vfs_getname.sh b/tools/perf/tests/shell/lib/probe_vfs_getname.sh
index 0606e693eb59c5e9..5c33ec7a5a63bdb3 100644
--- a/tools/perf/tests/shell/lib/probe_vfs_getname.sh
+++ b/tools/perf/tests/shell/lib/probe_vfs_getname.sh
@@ -14,10 +14,10 @@ add_probe_vfs_getname() {
 	add_probe_verbose=$1
 	if [ $had_vfs_getname -eq 1 ] ; then
 		result_filename_re="[[:space:]]+([[:digit:]]+)[[:space:]]+result->uptr.*"
-		line=$(perf probe -L getname_flags 2>&1 | grep -E "$result_filename_re=" | sed -r "s/$result_filename_re=/\1/")
+		line=$(perf probe -L getname_flags 2>&1 | grep -E "$result_filename_re" | sed -r "s/$result_filename_re/\1/")
 		if [ -z "$line" ] ; then
 			result_aname_re="[[:space:]]+([[:digit:]]+)[[:space:]]+result->aname = NULL;"
-			line=$(perf probe -L getname_flags 2>&1 | grep -E "$result_aname_re=" | sed -r "s/$result_aname_re=/\1/")
+			line=$(perf probe -L getname_flags 2>&1 | grep -E "$result_aname_re" | sed -r "s/$result_aname_re/\1/")
 		fi
 		perf probe -q       "vfs_getname=getname_flags:${line} pathname=result->name:string" || \
 		perf probe $add_probe_verbose "vfs_getname=getname_flags:${line} pathname=filename:ustring"
-- 
2.46.0