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07a88e2bcd
While making changes to the refcounted interrupt patch series, at some point on my local branch I broke something and ended up writing some kunit tests for testing refcounted interrupts as a result. So, let's include these tests now that we have refcounted interrupts. Signed-off-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Boqun Feng <boqun@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260804161447.84806-7-boqun@kernel.org
110 lines
2.2 KiB
C
110 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* KUnit test for refcounted interrupt enable/disables.
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*/
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#include <kunit/test.h>
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#include <linux/interrupt_rc.h>
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#define TEST_IRQ_ON() KUNIT_EXPECT_FALSE(test, irqs_disabled())
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#define TEST_IRQ_OFF() KUNIT_EXPECT_TRUE(test, irqs_disabled())
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/* ===== Test cases ===== */
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static void test_single_irq_change(struct kunit *test)
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{
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local_interrupt_disable();
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TEST_IRQ_OFF();
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local_interrupt_enable();
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}
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static void test_nested_irq_change(struct kunit *test)
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{
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local_interrupt_disable();
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TEST_IRQ_OFF();
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local_interrupt_disable();
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TEST_IRQ_OFF();
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local_interrupt_disable();
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TEST_IRQ_OFF();
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local_interrupt_enable();
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TEST_IRQ_OFF();
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local_interrupt_enable();
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TEST_IRQ_OFF();
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local_interrupt_enable();
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TEST_IRQ_ON();
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}
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static void test_multiple_irq_change(struct kunit *test)
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{
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local_interrupt_disable();
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TEST_IRQ_OFF();
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local_interrupt_disable();
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TEST_IRQ_OFF();
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local_interrupt_enable();
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TEST_IRQ_OFF();
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local_interrupt_enable();
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TEST_IRQ_ON();
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local_interrupt_disable();
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TEST_IRQ_OFF();
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local_interrupt_enable();
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TEST_IRQ_ON();
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}
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static void test_irq_save(struct kunit *test)
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{
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unsigned long flags;
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local_irq_save(flags);
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TEST_IRQ_OFF();
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local_interrupt_disable();
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TEST_IRQ_OFF();
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local_interrupt_enable();
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TEST_IRQ_OFF();
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local_irq_restore(flags);
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TEST_IRQ_ON();
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local_interrupt_disable();
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TEST_IRQ_OFF();
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local_irq_save(flags);
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TEST_IRQ_OFF();
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local_irq_restore(flags);
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TEST_IRQ_OFF();
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local_interrupt_enable();
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TEST_IRQ_ON();
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}
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static struct kunit_case test_cases[] = {
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KUNIT_CASE(test_single_irq_change),
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KUNIT_CASE(test_nested_irq_change),
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KUNIT_CASE(test_multiple_irq_change),
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KUNIT_CASE(test_irq_save),
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{},
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};
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/* init and exit are the same. */
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static int test_init(struct kunit *test)
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{
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TEST_IRQ_ON();
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return 0;
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}
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static void test_exit(struct kunit *test)
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{
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TEST_IRQ_ON();
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}
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static struct kunit_suite refcount_interrupt_test_suite = {
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.name = "refcount_interrupt",
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.test_cases = test_cases,
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.init = test_init,
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.exit = test_exit,
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};
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kunit_test_suite(refcount_interrupt_test_suite);
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MODULE_AUTHOR("Lyude Paul <lyude@redhat.com>");
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MODULE_DESCRIPTION("Refcounted interrupt unit test suite");
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MODULE_LICENSE("GPL");
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