// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2022, Madhavan Srinivasan, 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 */ #define EventCode 0x010000046080 #define MALLOC_SIZE (0x10000 * 10) /* Ought to be enough .. */ /* * A perf sampling test for mmcr2 * fields : l2l3 */ static int mmcr2_l2l3(void) { struct event event; u64 *intr_regs; char *p; int i; /* 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 the event overflow */ p = malloc(MALLOC_SIZE); FAIL_IF(!p); for (i = 0; i < MALLOC_SIZE; i += 0x10000) p[i] = i; 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 l2l3 field of MMCR2 match with * corresponding event code field */ FAIL_IF(EV_CODE_EXTRACT(event.attr.config, l2l3) != get_mmcr2_l2l3(get_reg_value(intr_regs, "MMCR2"), 4)); event_close(&event); free(p); return 0; } int main(void) { return test_harness(mmcr2_l2l3, "mmcr2_l2l3"); }