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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2026-2029 Red Hat, Inc. Gabriele Monaco <gmonaco@redhat.com>
*
* Declaration of wrappers to allow mocking core functionality, like current,
* and other testing utilities.
* Necessary only when mocking may be needed. If the RV KUnit test is
* enabled, the wrappers incur an additional function call overhead.
*/
#ifndef _RV_KUNIT_H
#define _RV_KUNIT_H
#if IS_ENABLED(CONFIG_RV_MONITORS_KUNIT_TEST)
#include <kunit/test.h>
#include <kunit/test-bug.h>
#include <linux/delay.h>
int rv_set_testing(struct kunit_suite *suite);
void rv_clear_testing(struct kunit_suite *suite);
#define RV_KUNIT_MAX_MOCK_TASKS 8
struct rv_kunit_ctx {
int reactions, expected;
int mock_task_count;
struct task_struct *mock_tasks[RV_KUNIT_MAX_MOCK_TASKS];
};
#define RV_KUNIT_EXPECT_REACTION(test, ctx) \
do { \
KUNIT_EXPECT_EQ(test, ctx->reactions, ++ctx->expected); \
if (ctx->reactions != ctx->expected) \
ctx->expected = ctx->reactions; \
} while (0)
#define RV_KUNIT_EXPECT_NO_REACTION(test, ctx) \
do { \
KUNIT_EXPECT_EQ(test, ctx->reactions, ctx->expected); \
if (ctx->reactions != ctx->expected) \
ctx->expected = ctx->reactions; \
} while (0)
#define RV_KUNIT_EXPECT_REACTION_HERE(test, ctx) \
for (int __done = ({ RV_KUNIT_EXPECT_NO_REACTION(test, ctx); 0; }); \
!__done; \
__done = ({ RV_KUNIT_EXPECT_REACTION(test, ctx); 1; }))
struct rv_kunit_mon {
struct rv_monitor *rv_this;
int (*monitor_init)(void);
void (*monitor_destroy)(void);
bool is_per_task;
int *task_slot;
void (*task_reset)(struct task_struct *task);
};
void prepare_test(struct kunit *test, const struct rv_kunit_mon *mon);
void teardown_test(void *arg);
struct task_struct *rv_kunit_alloc_mock_task(struct kunit *test);
void rv_mock_current(struct task_struct *tsk);
struct task_struct *rv_get_mock_current(void);
#define rv_get_current() (unlikely(kunit_get_current_test()) ? rv_get_mock_current() : current)
#else /* !CONFIG_RV_MONITORS_KUNIT_TEST */
#define rv_get_current() current
#endif /* CONFIG_RV_MONITORS_KUNIT_TEST */
#endif /* _RV_KUNIT_H */
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