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genirq/test: Drop CONFIG_GENERIC_IRQ_MIGRATION assumptions

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Not all platforms use the generic IRQ migration code, even if they select
GENERIC_IRQ_MIGRATION. (See, for example, powerpc / pseries_cpu_disable().)

If such platforms don't perform managed shutdown the same way, the interrupt
may not actually shut down, and these tests fail:

[    4.357022][  T101]     # irq_cpuhotplug_test: EXPECTATION FAILED at kernel/irq/irq_test.c:211
[    4.357022][  T101]     Expected irqd_is_activated(data) to be false, but is true
[    4.358128][  T101]     # irq_cpuhotplug_test: EXPECTATION FAILED at kernel/irq/irq_test.c:212
[    4.358128][  T101]     Expected irqd_is_started(data) to be false, but is true
[    4.375558][  T101]     # irq_cpuhotplug_test: EXPECTATION FAILED at kernel/irq/irq_test.c:216
[    4.375558][  T101]     Expected irqd_is_activated(data) to be false, but is true
[    4.376088][  T101]     # irq_cpuhotplug_test: EXPECTATION FAILED at kernel/irq/irq_test.c:217
[    4.376088][  T101]     Expected irqd_is_started(data) to be false, but is true
[    4.377851][    T1]     # irq_cpuhotplug_test: pass:0 fail:1 skip:0 total:1
[    4.377901][    T1]     not ok 4 irq_cpuhotplug_test
[    4.378073][    T1] # irq_test_cases: pass:3 fail:1 skip:0 total:4

Rather than test that PowerPC performs migration the same way as the
unterrupt core, just drop the state checks. The point of the test was to
ensure that the code kept |depth| balanced, which still can be tested for.

Fixes: 66067c3c8a ("genirq: Add kunit tests for depth counts")
Reported-by: Guenter Roeck <linux@roeck-us.net>
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/20250822190140.2154646-6-briannorris@chromium.org
This commit is contained in:
Brian Norris
2025-08-22 11:59:06 -07:00
committed by Thomas Gleixner
parent 0c888bc86d
commit add03fdb9d
1 changed files with 0 additions and 4 deletions
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4
kernel/irq/irq_test.c
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@@ -203,13 +203,9 @@ static void irq_cpuhotplug_test(struct kunit *test)
KUNIT_EXPECT_EQ(test, desc->depth, 1);
KUNIT_EXPECT_EQ(test, remove_cpu(1), 0);
KUNIT_EXPECT_FALSE(test, irqd_is_activated(data));
KUNIT_EXPECT_FALSE(test, irqd_is_started(data));
KUNIT_EXPECT_GE(test, desc->depth, 1);
KUNIT_EXPECT_EQ(test, add_cpu(1), 0);
KUNIT_EXPECT_FALSE(test, irqd_is_activated(data));
KUNIT_EXPECT_FALSE(test, irqd_is_started(data));
KUNIT_EXPECT_EQ(test, desc->depth, 1);
enable_irq(virq);