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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright 2014, Michael Ellerman, IBM Corp.4 */5 6#include <stdio.h>7#include <stdlib.h>8#include <sys/ioctl.h>9 10#include "ebb.h"11 12 13/*14 * Test counting multiple events using EBBs.15 */16int multi_counter(void)17{18 struct event events[6];19 int i, group_fd;20 21 SKIP_IF(!ebb_is_supported());22 23 event_init_named(&events[0], 0x1001C, "PM_CMPLU_STALL_THRD");24 event_init_named(&events[1], 0x2D016, "PM_CMPLU_STALL_FXU");25 event_init_named(&events[2], 0x30006, "PM_CMPLU_STALL_OTHER_CMPL");26 event_init_named(&events[3], 0x4000A, "PM_CMPLU_STALL");27 event_init_named(&events[4], 0x600f4, "PM_RUN_CYC");28 event_init_named(&events[5], 0x500fa, "PM_RUN_INST_CMPL");29 30 event_leader_ebb_init(&events[0]);31 for (i = 1; i < 6; i++)32 event_ebb_init(&events[i]);33 34 group_fd = -1;35 for (i = 0; i < 6; i++) {36 events[i].attr.exclude_kernel = 1;37 events[i].attr.exclude_hv = 1;38 events[i].attr.exclude_idle = 1;39 40 FAIL_IF(event_open_with_group(&events[i], group_fd));41 if (group_fd == -1)42 group_fd = events[0].fd;43 }44 45 ebb_enable_pmc_counting(1);46 ebb_enable_pmc_counting(2);47 ebb_enable_pmc_counting(3);48 ebb_enable_pmc_counting(4);49 ebb_enable_pmc_counting(5);50 ebb_enable_pmc_counting(6);51 setup_ebb_handler(standard_ebb_callee);52 53 FAIL_IF(ioctl(events[0].fd, PERF_EVENT_IOC_ENABLE, PERF_IOC_FLAG_GROUP));54 FAIL_IF(event_read(&events[0]));55 56 ebb_global_enable();57 58 mtspr(SPRN_PMC1, pmc_sample_period(sample_period));59 mtspr(SPRN_PMC2, pmc_sample_period(sample_period));60 mtspr(SPRN_PMC3, pmc_sample_period(sample_period));61 mtspr(SPRN_PMC4, pmc_sample_period(sample_period));62 mtspr(SPRN_PMC5, pmc_sample_period(sample_period));63 mtspr(SPRN_PMC6, pmc_sample_period(sample_period));64 65 while (ebb_state.stats.ebb_count < 50) {66 FAIL_IF(core_busy_loop());67 FAIL_IF(ebb_check_mmcr0());68 }69 70 ebb_global_disable();71 ebb_freeze_pmcs();72 73 dump_ebb_state();74 75 for (i = 0; i < 6; i++)76 event_close(&events[i]);77 78 FAIL_IF(ebb_state.stats.ebb_count == 0);79 80 return 0;81}82 83int main(void)84{85 return test_harness(multi_counter, "multi_counter");86}87