perf test: Test record with --threads option

The --threads option changed the 'perf record' behavior significantly,
so it'd be nice if we test it separately.  Add --threads options with
different argument in each test supported and check the result.

Also update the cleanup routine because threads recording produces data
in a directory.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221020172643.3458767-8-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/shell/record.sh

@@ -13,8 +13,8 @@ testprog=$(mktemp /tmp/__perf_test.prog.XXXXXX)
 testsym="test_loop"
 
 cleanup() {
-  rm -f "${perfdata}"
-  rm -f "${perfdata}".old
+  rm -rf "${perfdata}"
+  rm -rf "${perfdata}".old
 
   if [ "${testprog}" != "true" ]; then
     rm -f "${testprog}"
@@ -171,6 +171,19 @@ test_system_wide() {
     err=1
     return
   fi
+  if ! perf record -aB --synth=no -e cpu-clock,cs --threads=cpu \
+    -o "${perfdata}" ${testprog} 2> /dev/null
+  then
+    echo "System-wide record [Failed record --threads option]"
+    err=1
+    return
+  fi
+  if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
+  then
+    echo "System-wide record [Failed --threads missing output]"
+    err=1
+    return
+  fi
   echo "Basic --system-wide mode test [Success]"
 }
 
@@ -188,6 +201,19 @@ test_workload() {
     err=1
     return
   fi
+  if ! perf record -e cpu-clock,cs --threads=package \
+    -o "${perfdata}" ${testprog} 2> /dev/null
+  then
+    echo "Workload record [Failed record --threads option]"
+    err=1
+    return
+  fi
+  if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
+  then
+    echo "Workload record [Failed --threads missing output]"
+    err=1
+    return
+  fi
   echo "Basic target workload test [Success]"
 }