/* * 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"); }