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
23 static 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
run(unsigned int n)35 static 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
setup(void)57 static void setup(void)
58 {
59 tst_res(TINFO, "Testing %s variant", sched_variants[tst_variant].desc);
60 }
61
62 static 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