l3_bank_test.c

 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 */
17static 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
48int main(void)
49{
50	return test_harness(l3_bank_test, "l3_bank_test");
51}