// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2022, Athira Rajeev, IBM Corp. */ #include <stdio.h> #include <stdlib.h> #include "../event.h" #include "misc.h" #include "utils.h" /* All successful D-side store dispatches for this thread that were L2 Miss */ #define EventCode 0x46880 extern void thirty_two_instruction_loop_with_ll_sc(u64 loops, u64 *ll_sc_target); /* * A perf sampling test for mmcr1 * fields : comb. */ static int mmcr1_comb(void) { struct event event; u64 *intr_regs; u64 dummy; /* Check for platform support for the test */ SKIP_IF(check_pvr_for_sampling_tests()); /* 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 the event overflow */ thirty_two_instruction_loop_with_ll_sc(10000000, &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 comb field match with * corresponding event code fields */ FAIL_IF(EV_CODE_EXTRACT(event.attr.config, comb) != get_mmcr1_comb(get_reg_value(intr_regs, "MMCR1"), 4)); event_close(&event); return 0; } int main(void) { return test_harness(mmcr1_comb, "mmcr1_comb"); }