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| 3 | * KUnit compilation/smoke test for Private list primitives.
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| 4 | *
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| 5 | * Copyright (c) 2025, Google LLC.
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| 6 | * Pasha Tatashin <[email protected]>
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| 7 |
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| 8 | #include <linux/list_private.h>
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| 9 | #include <kunit/test.h>
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| 10 |
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| 11 | |
| 12 | * This forces compiler to warn if you access it directly, because list
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| 13 | * primitives expect (struct list_head *), not (volatile struct list_head *).
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| 14 |
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| 15 | #undef __private
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| 16 | #define __private volatile
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| 17 |
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| 18 |
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| 19 | #undef ACCESS_PRIVATE
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| 20 | #define ACCESS_PRIVATE(p, member) \
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| 21 | (*((struct list_head *)((unsigned long)&((p)->member))))
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| 22 |
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| 23 | struct list_test_struct {
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| 24 | int data;
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| 25 | struct list_head __private list;
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| 26 | };
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| 27 |
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| 28 | static void list_private_compile_test(struct kunit *test)
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| 29 | {
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| 30 | struct list_test_struct entry;
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| 31 | struct list_test_struct *pos, *n;
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| 32 | LIST_HEAD(head);
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| 33 |
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| 34 | INIT_LIST_HEAD(&ACCESS_PRIVATE(&entry, list));
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| 35 | list_add(&ACCESS_PRIVATE(&entry, list), &head);
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| 36 | pos = &entry;
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| 37 |
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| 38 | pos = list_private_entry(&ACCESS_PRIVATE(&entry, list), struct list_test_struct, list);
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| 39 | pos = list_private_first_entry(&head, struct list_test_struct, list);
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| 40 | pos = list_private_last_entry(&head, struct list_test_struct, list);
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| 41 | pos = list_private_next_entry(pos, list);
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| 42 | pos = list_private_prev_entry(pos, list);
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| 43 | pos = list_private_next_entry_circular(pos, &head, list);
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| 44 | pos = list_private_prev_entry_circular(pos, &head, list);
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| 45 |
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| 46 | if (list_private_entry_is_head(pos, &head, list))
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| 47 | return;
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| 48 |
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| 49 | list_private_for_each_entry(pos, &head, list) { }
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| 50 | list_private_for_each_entry_reverse(pos, &head, list) { }
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| 51 | list_private_for_each_entry_continue(pos, &head, list) { }
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| 52 | list_private_for_each_entry_continue_reverse(pos, &head, list) { }
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| 53 | list_private_for_each_entry_from(pos, &head, list) { }
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| 54 | list_private_for_each_entry_from_reverse(pos, &head, list) { }
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| 55 |
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| 56 | list_private_for_each_entry_safe(pos, n, &head, list)
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| 57 | list_private_safe_reset_next(pos, n, list);
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| 58 | list_private_for_each_entry_safe_continue(pos, n, &head, list) { }
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| 59 | list_private_for_each_entry_safe_from(pos, n, &head, list) { }
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| 60 | list_private_for_each_entry_safe_reverse(pos, n, &head, list) { }
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| 61 | }
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| 62 |
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| 63 | static struct kunit_case list_private_test_cases[] = {
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| 64 | KUNIT_CASE(list_private_compile_test),
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| 65 | {},
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| 66 | };
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| 67 |
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| 68 | static struct kunit_suite list_private_test_module = {
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| 69 | .name = "list-private-kunit-test",
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| 70 | .test_cases = list_private_test_cases,
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| 71 | };
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| 72 |
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| 73 | kunit_test_suite(list_private_test_module);
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| 74 |
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| 75 | MODULE_DESCRIPTION("KUnit compilation test for private list primitives");
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| 76 | MODULE_LICENSE("GPL");
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