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The header uses `NULL` in both `CONFIG_KUNIT=y` and `=n` cases, but does not include it explicitly. When `CONFIG_KUNIT=y`, the header is already getting included via the other headers, so it is not a problem for users. However, when `CONFIG_KUNIT=n`, it is not, and thus a user could hit a build error when including `kunit/test-bug.h`, like we are doing later in this series [1]. Thus include `linux/stddef.h`, and do so outside the `#if`, since it is used in both cases. Reported-by: Boqun Feng <boqun.feng@gmail.com> Closes: https://lore.kernel.org/rust-for-linux/ZJ8cNUW3oR2p+gL1@boqun-archlinux/ [1] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* KUnit API providing hooks for non-test code to interact with tests.
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*
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* Copyright (C) 2020, Google LLC.
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* Author: Uriel Guajardo <urielguajardo@google.com>
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*/
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#ifndef _KUNIT_TEST_BUG_H
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#define _KUNIT_TEST_BUG_H
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#include <linux/stddef.h> /* for NULL */
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#if IS_ENABLED(CONFIG_KUNIT)
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#include <linux/jump_label.h> /* For static branch */
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#include <linux/sched.h>
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/* Static key if KUnit is running any tests. */
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DECLARE_STATIC_KEY_FALSE(kunit_running);
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/* Hooks table: a table of function pointers filled in when kunit loads */
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extern struct kunit_hooks_table {
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__printf(3, 4) void (*fail_current_test)(const char*, int, const char*, ...);
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void *(*get_static_stub_address)(struct kunit *test, void *real_fn_addr);
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} kunit_hooks;
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/**
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* kunit_get_current_test() - Return a pointer to the currently running
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* KUnit test.
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*
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* If a KUnit test is running in the current task, returns a pointer to its
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* associated struct kunit. This pointer can then be passed to any KUnit
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* function or assertion. If no test is running (or a test is running in a
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* different task), returns NULL.
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*
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* This function is safe to call even when KUnit is disabled. If CONFIG_KUNIT
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* is not enabled, it will compile down to nothing and will return quickly no
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* test is running.
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*/
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static inline struct kunit *kunit_get_current_test(void)
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{
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if (!static_branch_unlikely(&kunit_running))
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return NULL;
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return current->kunit_test;
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}
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/**
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* kunit_fail_current_test() - If a KUnit test is running, fail it.
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*
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* If a KUnit test is running in the current task, mark that test as failed.
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*/
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#define kunit_fail_current_test(fmt, ...) do { \
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if (static_branch_unlikely(&kunit_running)) { \
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/* Guaranteed to be non-NULL when kunit_running true*/ \
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kunit_hooks.fail_current_test(__FILE__, __LINE__, \
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fmt, ##__VA_ARGS__); \
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} \
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} while (0)
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#else
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static inline struct kunit *kunit_get_current_test(void) { return NULL; }
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#define kunit_fail_current_test(fmt, ...) do {} while (0)
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#endif
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#endif /* _KUNIT_TEST_BUG_H */
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