Some of the events are blacklisted in power9. The list
of blacklisted events are noted in power9-events-list.h
When trying to do event open for any of these blacklisted
event will cause a failure. Testcase ensures that using
blacklisted events will cause event_open to fail in power9.
This test is only applicable on power9 DD2.1 and DD2.2 and
hence test adds checks to skip on other platforms.
Signed-off-by: Athira Rajeev <atraj...@linux.vnet.ibm.com>
---
.../powerpc/pmu/event_code_tests/Makefile | 3 +-
.../blacklisted_events_test.c | 132 ++++++++++++++++++
2 files changed, 134 insertions(+), 1 deletion(-)
create mode 100644
tools/testing/selftests/powerpc/pmu/event_code_tests/blacklisted_events_test.c
diff --git a/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile
b/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile
index e50570794337..a5916a938154 100644
--- a/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile
+++ b/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile
@@ -3,7 +3,8 @@ CFLAGS += -m64
TEST_GEN_PROGS := group_constraint_pmc56_test
group_pmc56_exclude_constraints_test group_constraint_pmc_count_test \
group_constraint_repeat_test group_constraint_radix_scope_qual_test
reserved_bits_mmcra_sample_elig_mode_test \
- group_constraint_mmcra_sample_test invalid_event_code_test
reserved_bits_mmcra_thresh_ctl_test
+ group_constraint_mmcra_sample_test invalid_event_code_test
reserved_bits_mmcra_thresh_ctl_test \
+ blacklisted_events_test
top_srcdir = ../../../../../..
include ../../../lib.mk
diff --git
a/tools/testing/selftests/powerpc/pmu/event_code_tests/blacklisted_events_test.c
b/tools/testing/selftests/powerpc/pmu/event_code_tests/blacklisted_events_test.c
new file mode 100644
index 000000000000..fafeff19cb34
--- /dev/null
+++
b/tools/testing/selftests/powerpc/pmu/event_code_tests/blacklisted_events_test.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2022, Athira Rajeev, IBM Corp.
+ */
+
+#include <stdio.h>
+#include <sys/prctl.h>
+#include <limits.h>
+#include "../event.h"
+#include "../sampling_tests/misc.h"
+
+#define PM_DTLB_MISS_16G 0x1c058
+#define PM_DERAT_MISS_2M 0x1c05a
+#define PM_DTLB_MISS_2M 0x1c05c
+#define PM_MRK_DTLB_MISS_1G 0x1d15c
+#define PM_DTLB_MISS_4K 0x2c056
+#define PM_DERAT_MISS_1G 0x2c05a
+#define PM_MRK_DERAT_MISS_2M 0x2d152
+#define PM_MRK_DTLB_MISS_4K 0x2d156
+#define PM_MRK_DTLB_MISS_16G 0x2d15e
+#define PM_DTLB_MISS_64K 0x3c056
+#define PM_MRK_DERAT_MISS_1G 0x3d152
+#define PM_MRK_DTLB_MISS_64K 0x3d156
+#define PM_DISP_HELD_SYNC_HOLD 0x4003c
+#define PM_DTLB_MISS_16M 0x4c056
+#define PM_DTLB_MISS_1G 0x4c05a
+#define PM_MRK_DTLB_MISS_16M 0x4c15e
+#define PM_MRK_ST_DONE_L2 0x10134
+#define PM_RADIX_PWC_L1_HIT 0x1f056
+#define PM_FLOP_CMPL 0x100f4
+#define PM_MRK_NTF_FIN 0x20112
+#define PM_RADIX_PWC_L2_HIT 0x2d024
+#define PM_IFETCH_THROTTLE 0x3405e
+#define PM_MRK_L2_TM_ST_ABORT_SISTER 0x3e15c
+#define PM_RADIX_PWC_L3_HIT 0x3f056
+#define PM_RUN_CYC_SMT2_MODE 0x3006c
+#define PM_TM_TX_PASS_RUN_INST 0x4e014
+
+#define PVR_POWER9_CUMULUS 0x00002000
+
+int blacklist_events_dd21[] = {
+ PM_MRK_ST_DONE_L2,
+ PM_RADIX_PWC_L1_HIT,
+ PM_FLOP_CMPL,
+ PM_MRK_NTF_FIN,
+ PM_RADIX_PWC_L2_HIT,
+ PM_IFETCH_THROTTLE,
+ PM_MRK_L2_TM_ST_ABORT_SISTER,
+ PM_RADIX_PWC_L3_HIT,
+ PM_RUN_CYC_SMT2_MODE,
+ PM_TM_TX_PASS_RUN_INST,
+ PM_DISP_HELD_SYNC_HOLD,
+};
+
+int blacklist_events_dd22[] = {
+ PM_DTLB_MISS_16G,
+ PM_DERAT_MISS_2M,
+ PM_DTLB_MISS_2M,
+ PM_MRK_DTLB_MISS_1G,
+ PM_DTLB_MISS_4K,
+ PM_DERAT_MISS_1G,
+ PM_MRK_DERAT_MISS_2M,
+ PM_MRK_DTLB_MISS_4K,
+ PM_MRK_DTLB_MISS_16G,
+ PM_DTLB_MISS_64K,
+ PM_MRK_DERAT_MISS_1G,
+ PM_MRK_DTLB_MISS_64K,
+ PM_DISP_HELD_SYNC_HOLD,
+ PM_DTLB_MISS_16M,
+ PM_DTLB_MISS_1G,
+ PM_MRK_DTLB_MISS_16M,
+};
+
+int pvr_min;
+
+/*
+ * check for power9 support for 2.1 and
+ * 2.2 model where blacklist is applicable.
+ */
+int check_for_power9_version(void)
+{
+ pvr_min = PVR_MIN(mfspr(SPRN_PVR));
+
+ SKIP_IF(PVR_VER(pvr) != POWER9);
+ SKIP_IF(!(pvr & PVR_POWER9_CUMULUS));
+
+ SKIP_IF(!(3 - pvr_min));
+
+ return 0;
+}
+
+/*
+ * Testcase to ensure that using blacklisted bits in
+ * event code should cause event_open to fail in power9
+ */
+
+static int blacklisted_events(void)
+{
+ struct event event;
+ int i = 0;
+
+ /* Check for platform support for the test */
+ SKIP_IF(platform_check_for_tests());
+
+ /*
+ * check for power9 support for 2.1 and
+ * 2.2 model where blacklist is applicable.
+ */
+ SKIP_IF(check_for_power9_version());
+
+ /* Skip for Generic compat mode */
+ SKIP_IF(check_for_generic_compat_pmu());
+
+ if (pvr_min == 1) {
+ for (i = 0; i < ARRAY_SIZE(blacklist_events_dd21); i++) {
+ event_init(&event, blacklist_events_dd21[i]);
+ FAIL_IF(!event_open(&event));
+ }
+ } else if (pvr_min == 2) {
+ for (i = 0; i < ARRAY_SIZE(blacklist_events_dd22); i++) {
+ event_init(&event, blacklist_events_dd22[i]);
+ FAIL_IF(!event_open(&event));
+ }
+ }
+
+ return 0;
+}
+
+int main(void)
+{
+ return test_harness(blacklisted_events, "blacklisted_events");
+}
--
2.35.1
