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[J-linux.git] / tools / testing / selftests / sched_ext / minimal.c
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (c) 2023 Meta Platforms, Inc. and affiliates.
4  * Copyright (c) 2023 David Vernet <[email protected]>
5  * Copyright (c) 2023 Tejun Heo <[email protected]>
6  */
7 #include <bpf/bpf.h>
8 #include <scx/common.h>
9 #include <sys/wait.h>
10 #include <unistd.h>
11 #include "minimal.bpf.skel.h"
12 #include "scx_test.h"
13
14 static enum scx_test_status setup(void **ctx)
15 {
16         struct minimal *skel;
17
18         skel = minimal__open_and_load();
19         if (!skel) {
20                 SCX_ERR("Failed to open and load skel");
21                 return SCX_TEST_FAIL;
22         }
23         *ctx = skel;
24
25         return SCX_TEST_PASS;
26 }
27
28 static enum scx_test_status run(void *ctx)
29 {
30         struct minimal *skel = ctx;
31         struct bpf_link *link;
32
33         link = bpf_map__attach_struct_ops(skel->maps.minimal_ops);
34         if (!link) {
35                 SCX_ERR("Failed to attach scheduler");
36                 return SCX_TEST_FAIL;
37         }
38
39         bpf_link__destroy(link);
40
41         return SCX_TEST_PASS;
42 }
43
44 static void cleanup(void *ctx)
45 {
46         struct minimal *skel = ctx;
47
48         minimal__destroy(skel);
49 }
50
51 struct scx_test minimal = {
52         .name = "minimal",
53         .description = "Verify we can load a fully minimal scheduler",
54         .setup = setup,
55         .run = run,
56         .cleanup = cleanup,
57 };
58 REGISTER_SCX_TEST(&minimal)
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