From: Brian Norris Date: Fri, 22 Aug 2025 18:59:05 +0000 (-0700) Subject: genirq/test: Depend on SPARSE_IRQ X-Git-Tag: v6.18-rc1~182^2~4 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0c888bc86d672e551ce5c58b891c8b44f8967643;p=thirdparty%2Flinux.git genirq/test: Depend on SPARSE_IRQ Some architectures have a static interrupt layout, with a limited number of interrupts. Without SPARSE_IRQ, the test may not be able to allocate any fake interrupts, and the test will fail. (This occurs on ARCH=m68k, for example.) Additionally, managed-affinity is only supported with CONFIG_SPARSE_IRQ=y, so irq_shutdown_depth_test() and irq_cpuhotplug_test() would fail without it. Add a 'SPARSE_IRQ' dependency to avoid these problems. Many architectures 'select SPARSE_IRQ', so this is easy to miss. Notably, this also excludes ARCH=um from running any of these tests, even though some of them might work. Fixes: 66067c3c8a1e ("genirq: Add kunit tests for depth counts") Reported-by: Guenter Roeck Signed-off-by: Brian Norris Signed-off-by: Thomas Gleixner Tested-by: Guenter Roeck Reviewed-by: David Gow Link: https://lore.kernel.org/all/20250822190140.2154646-5-briannorris@chromium.org --- diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig index 8bc4de38d7afd..1b4254d19a73e 100644 --- a/kernel/irq/Kconfig +++ b/kernel/irq/Kconfig @@ -143,6 +143,7 @@ config GENERIC_IRQ_KEXEC_CLEAR_VM_FORWARD config IRQ_KUNIT_TEST bool "KUnit tests for IRQ management APIs" if !KUNIT_ALL_TESTS depends on KUNIT=y + depends on SPARSE_IRQ default KUNIT_ALL_TESTS select IRQ_DOMAIN imply SMP