1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2014, Michael Ellerman, IBM Corp. 4 */ 5 6 #include <stdio.h> 7 #include <stdlib.h> 8 9 #include "event.h" 10 #include "utils.h" 11 12 #define MALLOC_SIZE (0x10000 * 10) /* Ought to be enough .. */ 13 14 /* 15 * Tests that the L3 bank handling is correct. We fixed it in commit e9aaac1. 16 */ 17 static int l3_bank_test(void) 18 { 19 struct event event; 20 char *p; 21 int i; 22 23 // The L3 bank logic is only used on Power8 or later 24 SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_2_07)); 25 26 p = malloc(MALLOC_SIZE); 27 FAIL_IF(!p); 28 29 event_init(&event, 0x84918F); 30 31 FAIL_IF(event_open(&event)); 32 33 for (i = 0; i < MALLOC_SIZE; i += 0x10000) 34 p[i] = i; 35 36 event_read(&event); 37 event_report(&event); 38 39 FAIL_IF(event.result.running == 0); 40 FAIL_IF(event.result.enabled == 0); 41 42 event_close(&event); 43 free(p); 44 45 return 0; 46 } 47 48 int main(void) 49 { 50 return test_harness(l3_bank_test, "l3_bank_test"); 51 } 52