[PATCH] perf test: Fix test-record-dummy-C0 failure for supported PERF_FORMAT_LOST feature kernel

[Yang Jihong]

For kernel that supports PERF_FORMAT_LOST, attr->read_format has
PERF_FORMAT_LOST bit. Update expected value of
attr->read_format of test-record-dummy-C0 for this scenario.

Before:

  # ./perf test 17 -vv
   17: Setup struct perf_event_attr                                    :
  --- start ---
  test child forked, pid 1609441
  <SNIP>
  running './tests/attr/test-record-dummy-C0'
    'PERF_TEST_ATTR=/tmp/tmpm3s60aji ./perf record -o /tmp/tmpm3s60aji/perf.data --no-bpf-event -e dummy -C 0 kill >/dev/null 2>&1' ret '1', expected '1'
  expected read_format=4, got 20
  FAILED './tests/attr/test-record-dummy-C0' - match failure
  test child finished with -1
  ---- end ----
  Setup struct perf_event_attr: FAILED!

After:

  # ./perf test 17 -vv
   17: Setup struct perf_event_attr                                    :
  --- start ---
  test child forked, pid 1609441
  <SNIP>
  running './tests/attr/test-record-dummy-C0'
    'PERF_TEST_ATTR=/tmp/tmppa9vxcb7 ./perf record -o /tmp/tmppa9vxcb7/perf.data --no-bpf-event -e dummy -C 0 kill >/dev/null 2>&1' ret '1', expected '1'
  <SNIP>
  test child finished with 0
  ---- end ----
  Setup struct perf_event_attr: Ok

Reported-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Closes: https://lore.kernel.org/all/CAM9d7cgNH2+zhSAmA3en_6as915UsF25MoLbfjE350tAP43Bog@xxxxxxxxxxxxxx/
Signed-off-by: Yang Jihong <yangjihong1@xxxxxxxxxx>
---
 tools/perf/tests/attr/test-record-dummy-C0 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/attr/test-record-dummy-C0 b/tools/perf/tests/attr/test-record-dummy-C0
index 83ca4e373acd..576ec48b3aaf 100644
--- a/tools/perf/tests/attr/test-record-dummy-C0
+++ b/tools/perf/tests/attr/test-record-dummy-C0
@@ -17,7 +17,7 @@ sample_period=4000
 # PERF_SAMPLE_PERIOD
 # + PERF_SAMPLE_CPU added by -C 0
 sample_type=391
-read_format=4
+read_format=4|20
 disabled=0
 inherit=1
 pinned=0
-- 
2.34.1