1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2021, BELLSOFT. All rights reserved.
4 * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
5 * AUTHOR: Saji Kumar.V.R <saji.kumar@wipro.com>
6 */
7
8/*\
9 * [Description]
10 *
11 * Checks functionality for sched_setparam(2)
12 *
13 * This test changes the scheduling priority for current process
14 * and verifies it by calling sched_getparam().
15 */
16
17#include "tst_test.h"
18#include "tst_sched.h"
19
20#define FIFO_OR_RR_PRIO 5
21#define OTHER_PRIO 0
22
23static struct test_cases_t {
24	char *desc;
25	int policy;
26	int priority;
27	int param;
28} tcases[] = {
29	{
30	"Test with policy SCHED_FIFO", SCHED_FIFO, FIFO_OR_RR_PRIO, 1}, {
31	"Test with policy SCHED_RR", SCHED_RR, FIFO_OR_RR_PRIO, 1}, {
32	"Test with SCHED_OTHER", SCHED_OTHER, OTHER_PRIO, 0}
33};
34
35static void run(unsigned int n)
36{
37	struct test_cases_t *tc = &tcases[n];
38	struct sched_variant *tv = &sched_variants[tst_variant];
39	struct sched_param p = { .sched_priority = tc->param };
40
41	TST_EXP_PASS_SILENT(tv->sched_setscheduler(0, tc->policy, &p));
42
43	p.sched_priority = tc->priority;
44	TST_EXP_PASS_SILENT(tv->sched_setparam(0, &p));
45
46	p.sched_priority = -1;
47	TST_EXP_PASS_SILENT(tv->sched_getparam(0, &p));
48
49	if (p.sched_priority == tc->priority) {
50		tst_res(TPASS, "got expected priority %d", p.sched_priority);
51	} else {
52		tst_res(TFAIL, "unexpected priority value %d, expected %d",
53			p.sched_priority, tc->priority);
54	}
55}
56
57static void setup(void)
58{
59	tst_res(TINFO, "Testing %s variant", sched_variants[tst_variant].desc);
60}
61
62static struct tst_test test = {
63	.needs_root = 1,
64	.setup = setup,
65	.test = run,
66	.test_variants = ARRAY_SIZE(sched_variants),
67	.tcnt = ARRAY_SIZE(tcases),
68};
69