perf test: Update sample filtering tests with multiple events

Add Multiple bpf-filter test for two or more events with filters.
It uses task-clock and page-faults events with different filter
expressions and check the perf script output

  $ sudo ./perf test filtering -vv
   96: perf record sample filtering (by BPF) tests:
  --- start ---
  test child forked, pid 2804025
  Checking BPF-filter privilege
  Basic bpf-filter test
  Basic bpf-filter test [Success]
  Failing bpf-filter test
  Error: task-clock event does not have PERF_SAMPLE_CPU
  Failing bpf-filter test [Success]
  Group bpf-filter test
  Error: task-clock event does not have PERF_SAMPLE_CPU
  Error: task-clock event does not have PERF_SAMPLE_CODE_PAGE_SIZE
  Group bpf-filter test [Success]
  Multiple bpf-filter test
  Multiple bpf-filter test [Success]
  ---- end(0) ----
   96: perf record sample filtering (by BPF) tests                     : Ok

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240820154504.128923-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/shell/record_bpf_filter.sh

@@ -116,6 +116,36 @@ test_bpf_filter_group() {
   echo "Group bpf-filter test [Success]"
 }
 
+test_bpf_filter_multi() {
+  echo "Multiple bpf-filter test"
+
+  if ! perf record -e task-clock --filter 'period > 100000' \
+       -e page-faults --filter 'ip < 0xffffffff00000000' \
+       -o "${perfdata}" true 2> /dev/null
+  then
+    echo "Multiple bpf-filter test [Failed record]"
+    err=1
+    return
+  fi
+
+  if ! perf script -i "${perfdata}" -F period,event | grep task-clock | \
+	  awk '{ if (int($1) <= 100000) { print $0; exit(1); } }'
+  then
+    echo "Multiple bpf-filter test [Failed task-clock period]"
+    err=1
+    return
+  fi
+
+  if perf script -i "${perfdata}" -F event,ip | grep page-fault | \
+	  grep 'ffffffff[0-9a-f]*'
+  then
+    echo "Multiple bpf-filter test [Failed page-faults ip]"
+    err=1
+    return
+  fi
+
+  echo "Multiple bpf-filter test [Success]"
+}
 
 test_bpf_filter_priv
 
@@ -131,5 +161,9 @@ if [ $err = 0 ]; then
   test_bpf_filter_group
 fi
 
+if [ $err = 0 ]; then
+  test_bpf_filter_multi
+fi
+
 cleanup
 exit $err