mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-28 12:53:14 +01:00
Pasha Tatashin
66bd8501ce
Add a KUnit test suite for the new private list primitives. The test defines a struct with a __private list_head and exercises every macro defined in <linux/list_private.h>. This ensures that the macros correctly handle the ACCESS_PRIVATE() abstraction and compile without warnings when acting on private members, verifying that qualifiers are stripped and offsets are calculated correctly. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Pasha Tatashin <[email protected]> Reviewed-by: David Gow <[email protected]> Cc: Alexander Graf <[email protected]> Cc: David Matlack <[email protected]> Cc: David Rientjes <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Kees Cook <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Petr Mladek <[email protected]> Cc: Pratyush Yadav <[email protected]> Cc: Samiullah Khawaja <[email protected]> Cc: Tamir Duberstein <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* KUnit compilation/smoke test for Private list primitives.
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*
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* Copyright (c) 2025, Google LLC.
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* Pasha Tatashin <[email protected]>
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*/
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#include <linux/list_private.h>
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#include <kunit/test.h>
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/*
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* This forces compiler to warn if you access it directly, because list
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* primitives expect (struct list_head *), not (volatile struct list_head *).
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*/
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#undef __private
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#define __private volatile
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/* Redefine ACCESS_PRIVATE for this test. */
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#undef ACCESS_PRIVATE
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#define ACCESS_PRIVATE(p, member) \
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(*((struct list_head *)((unsigned long)&((p)->member))))
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struct list_test_struct {
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int data;
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struct list_head __private list;
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};
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static void list_private_compile_test(struct kunit *test)
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{
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struct list_test_struct entry;
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struct list_test_struct *pos, *n;
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LIST_HEAD(head);
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INIT_LIST_HEAD(&ACCESS_PRIVATE(&entry, list));
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list_add(&ACCESS_PRIVATE(&entry, list), &head);
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pos = &entry;
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pos = list_private_entry(&ACCESS_PRIVATE(&entry, list), struct list_test_struct, list);
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pos = list_private_first_entry(&head, struct list_test_struct, list);
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pos = list_private_last_entry(&head, struct list_test_struct, list);
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pos = list_private_next_entry(pos, list);
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pos = list_private_prev_entry(pos, list);
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pos = list_private_next_entry_circular(pos, &head, list);
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pos = list_private_prev_entry_circular(pos, &head, list);
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if (list_private_entry_is_head(pos, &head, list))
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return;
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list_private_for_each_entry(pos, &head, list) { }
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list_private_for_each_entry_reverse(pos, &head, list) { }
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list_private_for_each_entry_continue(pos, &head, list) { }
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list_private_for_each_entry_continue_reverse(pos, &head, list) { }
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list_private_for_each_entry_from(pos, &head, list) { }
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list_private_for_each_entry_from_reverse(pos, &head, list) { }
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list_private_for_each_entry_safe(pos, n, &head, list)
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list_private_safe_reset_next(pos, n, list);
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list_private_for_each_entry_safe_continue(pos, n, &head, list) { }
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list_private_for_each_entry_safe_from(pos, n, &head, list) { }
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list_private_for_each_entry_safe_reverse(pos, n, &head, list) { }
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}
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static struct kunit_case list_private_test_cases[] = {
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KUNIT_CASE(list_private_compile_test),
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{},
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};
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static struct kunit_suite list_private_test_module = {
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.name = "list-private-kunit-test",
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.test_cases = list_private_test_cases,
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};
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kunit_test_suite(list_private_test_module);
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MODULE_DESCRIPTION("KUnit compilation test for private list primitives");
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MODULE_LICENSE("GPL");
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