// SPDX-License-Identifier: GPL-2.0/* * KUnit test for refcounted interrupt enable/disables. */ #include <kunit/test.h>#include <linux/interrupt_rc.h> #define TEST_IRQ_ON() KUNIT_EXPECT_FALSE(test, irqs_disabled())#define TEST_IRQ_OFF() KUNIT_EXPECT_TRUE(test, irqs_disabled()) /* ===== Test cases ===== */static void test_single_irq_change(struct kunit *test){	local_interrupt_disable();	TEST_IRQ_OFF();	local_interrupt_enable();} static void test_nested_irq_change(struct kunit *test){	local_interrupt_disable();	TEST_IRQ_OFF();	local_interrupt_disable();	TEST_IRQ_OFF();	local_interrupt_disable();	TEST_IRQ_OFF(); 	local_interrupt_enable();	TEST_IRQ_OFF();	local_interrupt_enable();	TEST_IRQ_OFF();	local_interrupt_enable();	TEST_IRQ_ON();} static void test_multiple_irq_change(struct kunit *test){	local_interrupt_disable();	TEST_IRQ_OFF();	local_interrupt_disable();	TEST_IRQ_OFF(); 	local_interrupt_enable();	TEST_IRQ_OFF();	local_interrupt_enable();	TEST_IRQ_ON(); 	local_interrupt_disable();	TEST_IRQ_OFF();	local_interrupt_enable();	TEST_IRQ_ON();} static void test_irq_save(struct kunit *test){	unsigned long flags; 	local_irq_save(flags);	TEST_IRQ_OFF();	local_interrupt_disable();	TEST_IRQ_OFF();	local_interrupt_enable();	TEST_IRQ_OFF();	local_irq_restore(flags);	TEST_IRQ_ON(); 	local_interrupt_disable();	TEST_IRQ_OFF();	local_irq_save(flags);	TEST_IRQ_OFF();	local_irq_restore(flags);	TEST_IRQ_OFF();	local_interrupt_enable();	TEST_IRQ_ON();} static struct kunit_case test_cases[] = {	KUNIT_CASE(test_single_irq_change),	KUNIT_CASE(test_nested_irq_change),	KUNIT_CASE(test_multiple_irq_change),	KUNIT_CASE(test_irq_save),	{},}; /* init and exit are the same. */static int test_init(struct kunit *test){	TEST_IRQ_ON(); 	return 0;} static void test_exit(struct kunit *test){	TEST_IRQ_ON();} static struct kunit_suite refcount_interrupt_test_suite = {	.name = "refcount_interrupt",	.test_cases = test_cases,	.init = test_init,	.exit = test_exit,}; kunit_test_suite(refcount_interrupt_test_suite);MODULE_AUTHOR("Lyude Paul <lyude@redhat.com>");MODULE_DESCRIPTION("Refcounted interrupt unit test suite");MODULE_LICENSE("GPL");