perf test shell lock_contention: Add cgroup aggregation and filter tests

Add cgroup aggregation and filter tests.

  $ sudo ./perf test -v contention
   84: kernel lock contention analysis test                            :
  --- start ---
  test child forked, pid 222423
  Testing perf lock record and perf lock contention
  Testing perf lock contention --use-bpf
  Testing perf lock record and perf lock contention at the same time
  Testing perf lock contention --threads
  Testing perf lock contention --lock-addr
  Testing perf lock contention --lock-cgroup
  Testing perf lock contention --type-filter (w/ spinlock)
  Testing perf lock contention --lock-filter (w/ tasklist_lock)
  Testing perf lock contention --callstack-filter (w/ unix_stream)
  Testing perf lock contention --callstack-filter with task aggregation
  Testing perf lock contention --cgroup-filter
  Testing perf lock contention CSV output
  test child finished with 0
  ---- end ----
  kernel lock contention analysis test: Ok

Committer testing:

  [root@quaco ~]# uname -a
  Linux quaco 6.4.10-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Aug 11 12:20:29 UTC 2023 x86_64 GNU/Linux
  [root@quaco ~]# perf test -v contention
   84: kernel lock contention analysis test                            :
  --- start ---
  test child forked, pid 452625
  Testing perf lock record and perf lock contention
  Testing perf lock contention --use-bpf
  Testing perf lock record and perf lock contention at the same time
  Testing perf lock contention --threads
  Testing perf lock contention --lock-addr
  Testing perf lock contention --lock-cgroup
  Testing perf lock contention --type-filter (w/ spinlock)
  Testing perf lock contention --lock-filter (w/ tasklist_lock)
  Testing perf lock contention --callstack-filter (w/ unix_stream)
  Testing perf lock contention --callstack-filter with task aggregation
  Testing perf lock contention --cgroup-filter
  Testing perf lock contention CSV output
  test child finished with 0
  ---- end ----
  kernel lock contention analysis test: Ok
  [root@quaco ~]#
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Hao Luo <haoluo@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20230906174903.346486-6-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/shell/lock_contention.sh

@@ -123,6 +123,24 @@ test_aggr_addr()
 	fi
 }
 
+test_aggr_cgroup()
+{
+	echo "Testing perf lock contention --lock-cgroup"
+
+	if ! perf lock con -b true > /dev/null 2>&1 ; then
+		echo "[Skip] No BPF support"
+		return
+	fi
+
+	# the perf lock contention output goes to the stderr
+	perf lock con -a -b -g -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result}
+	if [ "$(cat "${result}" | wc -l)" != "1" ]; then
+		echo "[Fail] BPF result count is not 1:" "$(cat "${result}" | wc -l)"
+		err=1
+		exit
+	fi
+}
+
 test_type_filter()
 {
 	echo "Testing perf lock contention --type-filter (w/ spinlock)"
@@ -232,6 +250,31 @@ test_aggr_task_stack_filter()
 		exit
 	fi
 }
+test_cgroup_filter()
+{
+	echo "Testing perf lock contention --cgroup-filter"
+
+	if ! perf lock con -b true > /dev/null 2>&1 ; then
+		echo "[Skip] No BPF support"
+		return
+	fi
+
+	perf lock con -a -b -g -E 1 -F wait_total -q -- perf bench sched messaging > /dev/null 2> ${result}
+	if [ "$(cat "${result}" | wc -l)" != "1" ]; then
+		echo "[Fail] BPF result should have a cgroup result:" "$(cat "${result}")"
+		err=1
+		exit
+	fi
+
+	cgroup=$(cat "${result}" | awk '{ print $3 }')
+	perf lock con -a -b -g -E 1 -G "${cgroup}" -q -- perf bench sched messaging > /dev/null 2> ${result}
+	if [ "$(cat "${result}" | wc -l)" != "1" ]; then
+		echo "[Fail] BPF result should have a result with cgroup filter:" "$(cat "${cgroup}")"
+		err=1
+		exit
+	fi
+}
+
 
 test_csv_output()
 {
@@ -275,10 +318,12 @@ test_bpf
 test_record_concurrent
 test_aggr_task
 test_aggr_addr
+test_aggr_cgroup
 test_type_filter
 test_lock_filter
 test_stack_filter
 test_aggr_task_stack_filter
+test_cgroup_filter
 test_csv_output
 
 exit ${err}