selftests/powerpc: Add tests of PMU EBBs

[karo-tx-linux.git] / tools / testing / selftests / powerpc / pmu / ebb / multi_counter_test.c

diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c
new file mode 100644 (file)
index 0000000..67d78af
--- /dev/null
+++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2014, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+
+#include "ebb.h"
+
+
+/*
+ * Test counting multiple events using EBBs.
+ */
+int multi_counter(void)
+{
+       struct event events[6];
+       int i, group_fd;
+
+       event_init_named(&events[0], 0x1001C, "PM_CMPLU_STALL_THRD");
+       event_init_named(&events[1], 0x2D016, "PM_CMPLU_STALL_FXU");
+       event_init_named(&events[2], 0x30006, "PM_CMPLU_STALL_OTHER_CMPL");
+       event_init_named(&events[3], 0x4000A, "PM_CMPLU_STALL");
+       event_init_named(&events[4], 0x600f4, "PM_RUN_CYC");
+       event_init_named(&events[5], 0x500fa, "PM_RUN_INST_CMPL");
+
+       event_leader_ebb_init(&events[0]);
+       for (i = 1; i < 6; i++)
+               event_ebb_init(&events[i]);
+
+       group_fd = -1;
+       for (i = 0; i < 6; i++) {
+               events[i].attr.exclude_kernel = 1;
+               events[i].attr.exclude_hv = 1;
+               events[i].attr.exclude_idle = 1;
+
+               FAIL_IF(event_open_with_group(&events[i], group_fd));
+               if (group_fd == -1)
+                       group_fd = events[0].fd;
+       }
+
+       ebb_enable_pmc_counting(1);
+       ebb_enable_pmc_counting(2);
+       ebb_enable_pmc_counting(3);
+       ebb_enable_pmc_counting(4);
+       ebb_enable_pmc_counting(5);
+       ebb_enable_pmc_counting(6);
+       setup_ebb_handler(standard_ebb_callee);
+
+       FAIL_IF(ioctl(events[0].fd, PERF_EVENT_IOC_ENABLE, PERF_IOC_FLAG_GROUP));
+       FAIL_IF(event_read(&events[0]));
+
+       ebb_global_enable();
+
+       mtspr(SPRN_PMC1, pmc_sample_period(sample_period));
+       mtspr(SPRN_PMC2, pmc_sample_period(sample_period));
+       mtspr(SPRN_PMC3, pmc_sample_period(sample_period));
+       mtspr(SPRN_PMC4, pmc_sample_period(sample_period));
+       mtspr(SPRN_PMC5, pmc_sample_period(sample_period));
+       mtspr(SPRN_PMC6, pmc_sample_period(sample_period));
+
+       while (ebb_state.stats.ebb_count < 50) {
+               FAIL_IF(core_busy_loop());
+               FAIL_IF(ebb_check_mmcr0());
+       }
+
+       ebb_global_disable();
+       ebb_freeze_pmcs();
+
+       count_pmc(1, sample_period);
+       count_pmc(2, sample_period);
+       count_pmc(3, sample_period);
+       count_pmc(4, sample_period);
+       count_pmc(5, sample_period);
+       count_pmc(6, sample_period);
+
+       dump_ebb_state();
+
+       for (i = 0; i < 6; i++)
+               event_close(&events[i]);
+
+       FAIL_IF(ebb_state.stats.ebb_count == 0);
+
+       return 0;
+}
+
+int main(void)
+{
+       return test_harness(multi_counter, "multi_counter");
+}