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genirq/test: Factor out fake-virq setup

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A few things need to be repeated in tests. Factor out the creation of fake
interrupts.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: David Gow <davidgow@google.com>
Link: https://lore.kernel.org/all/20250822190140.2154646-3-briannorris@chromium.org
This commit is contained in:
Brian Norris 2025-08-22 11:59:03 -07:00 committed by Thomas Gleixner
parent f8a44f9bab
commit 59405c248a
1 changed files with 20 additions and 25 deletions
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45
kernel/irq/irq_test.c
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@ -41,15 +41,15 @@ static struct irq_chip fake_irq_chip = {
.flags = IRQCHIP_SKIP_SET_WAKE,
};
static void irq_disable_depth_test(struct kunit *test)
static int irq_test_setup_fake_irq(struct kunit *test, struct irq_affinity_desc *affd)
{
struct irq_desc *desc;
int virq, ret;
int virq;
virq = irq_domain_alloc_descs(-1, 1, 0, NUMA_NO_NODE, NULL);
virq = irq_domain_alloc_descs(-1, 1, 0, NUMA_NO_NODE, affd);
KUNIT_ASSERT_GE(test, virq, 0);
irq_set_chip_and_handler(virq, &dummy_irq_chip, handle_simple_irq);
irq_set_chip_and_handler(virq, &fake_irq_chip, handle_simple_irq);
desc = irq_to_desc(virq);
KUNIT_ASSERT_PTR_NE(test, desc, NULL);
@ -57,6 +57,19 @@ static void irq_disable_depth_test(struct kunit *test)
/* On some architectures, IRQs are NOREQUEST | NOPROBE by default. */
irq_settings_clr_norequest(desc);
return virq;
}
static void irq_disable_depth_test(struct kunit *test)
{
struct irq_desc *desc;
int virq, ret;
virq = irq_test_setup_fake_irq(test, NULL);
desc = irq_to_desc(virq);
KUNIT_ASSERT_PTR_NE(test, desc, NULL);
ret = request_irq(virq, noop_handler, 0, "test_irq", NULL);
KUNIT_EXPECT_EQ(test, ret, 0);
@ -76,17 +89,11 @@ static void irq_free_disabled_test(struct kunit *test)
struct irq_desc *desc;
int virq, ret;
virq = irq_domain_alloc_descs(-1, 1, 0, NUMA_NO_NODE, NULL);
KUNIT_ASSERT_GE(test, virq, 0);
irq_set_chip_and_handler(virq, &dummy_irq_chip, handle_simple_irq);
virq = irq_test_setup_fake_irq(test, NULL);
desc = irq_to_desc(virq);
KUNIT_ASSERT_PTR_NE(test, desc, NULL);
/* On some architectures, IRQs are NOREQUEST | NOPROBE by default. */
irq_settings_clr_norequest(desc);
ret = request_irq(virq, noop_handler, 0, "test_irq", NULL);
KUNIT_EXPECT_EQ(test, ret, 0);
@ -118,17 +125,11 @@ static void irq_shutdown_depth_test(struct kunit *test)
if (!IS_ENABLED(CONFIG_SMP))
kunit_skip(test, "requires CONFIG_SMP for managed shutdown");
virq = irq_domain_alloc_descs(-1, 1, 0, NUMA_NO_NODE, &affinity);
KUNIT_ASSERT_GE(test, virq, 0);
irq_set_chip_and_handler(virq, &dummy_irq_chip, handle_simple_irq);
virq = irq_test_setup_fake_irq(test, &affinity);
desc = irq_to_desc(virq);
KUNIT_ASSERT_PTR_NE(test, desc, NULL);
/* On some architectures, IRQs are NOREQUEST | NOPROBE by default. */
irq_settings_clr_norequest(desc);
data = irq_desc_get_irq_data(desc);
KUNIT_ASSERT_PTR_NE(test, data, NULL);
@ -181,17 +182,11 @@ static void irq_cpuhotplug_test(struct kunit *test)
cpumask_copy(&affinity.mask, cpumask_of(1));
virq = irq_domain_alloc_descs(-1, 1, 0, NUMA_NO_NODE, &affinity);
KUNIT_ASSERT_GE(test, virq, 0);
irq_set_chip_and_handler(virq, &fake_irq_chip, handle_simple_irq);
virq = irq_test_setup_fake_irq(test, &affinity);
desc = irq_to_desc(virq);
KUNIT_ASSERT_PTR_NE(test, desc, NULL);
/* On some architectures, IRQs are NOREQUEST | NOPROBE by default. */
irq_settings_clr_norequest(desc);
data = irq_desc_get_irq_data(desc);
KUNIT_ASSERT_PTR_NE(test, data, NULL);