// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2022, Kajol Jain, IBM Corp. */ #include <stdio.h> #include <stdlib.h> #include "../event.h" #include "misc.h" #include "utils.h" extern void thirty_two_instruction_loop_with_ll_sc(u64 loops, u64 *ll_sc_target); /* The data cache was reloaded from local core's L3 due to a demand load */ #define EventCode 0x1340000001c040 /* * A perf sampling test for mmcr3 * fields. */ static int mmcr3_src(void) { struct event event; u64 *intr_regs; u64 dummy; /* Check for platform support for the test */ SKIP_IF(check_pvr_for_sampling_tests()); SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_1)); /* Init the event for the sampling test */ event_init_sampling(&event, EventCode); event.attr.sample_regs_intr = platform_extended_mask; FAIL_IF(event_open(&event)); event.mmap_buffer = event_sample_buf_mmap(event.fd, 1); FAIL_IF(event_enable(&event)); /* workload to make event overflow */ thirty_two_instruction_loop_with_ll_sc(1000000, &dummy); FAIL_IF(event_disable(&event)); /* Check for sample count */ FAIL_IF(!collect_samples(event.mmap_buffer)); intr_regs = get_intr_regs(&event, event.mmap_buffer); /* Check for intr_regs */ FAIL_IF(!intr_regs); /* * Verify that src field of MMCR3 match with * corresponding event code field */ FAIL_IF(EV_CODE_EXTRACT(event.attr.config, mmcr3_src) != get_mmcr3_src(get_reg_value(intr_regs, "MMCR3"), 1)); event_close(&event); return 0; } int main(void) { return test_harness(mmcr3_src, "mmcr3_src"); }