[tip: locking/urgent] irq: Make refcount_interrupt kunit test selectable

[tip-bot2 for Kuan-Wei Chiu]

The following commit has been merged into the locking/urgent branch of tip:

Commit-ID:     26f6b6357b1b06e6aaa9b8d796989cca785d8e1d
Gitweb:        https://git.kernel.org/tip/26f6b6357b1b06e6aaa9b8d796989cca785d8e1d
Author:        Kuan-Wei Chiu <visitorckw@xxxxxxxxx>
AuthorDate:    Thu, 01 Oct 2026 10:25:15 +02:00
Committer:     Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Fri, 02 Oct 2026 11:40:12 +02:00

irq: Make refcount_interrupt kunit test selectable

Currently, refcount_interrupt_test is built unconditionally when
CONFIG_KUNIT is enabled, causing it to run unexpectedly during boot.

Fix this by introducing CONFIG_REFCOUNT_INTERRUPT_KUNIT_TEST so the
test can be configured independently, following standard kunit
practices.

Fixes: 07a88e2bcd5b ("irq: Add KUnit test for refcounted interrupt enable/disable")
Signed-off-by: Kuan-Wei Chiu <visitorckw@xxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Reviewed-by: Lyude Paul <lyude@xxxxxxxxxx>
Reviewed-by: Radu Rendec <radu@xxxxxxxxxx>
Reviewed-by: Boqun Feng <boqun@xxxxxxxxxx>
Link: https://patch.msgid.link/20261001082519.16195-2-boqun@xxxxxxxxxx
---
 kernel/irq/Kconfig  | 12 ++++++++++++
 kernel/irq/Makefile |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 05cba4e..6923f37 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -150,6 +150,18 @@ config IRQ_KUNIT_TEST
 
 	  If unsure, say N.
 
+config REFCOUNT_INTERRUPT_KUNIT_TEST
+	tristate "Test refcounted interrupt enable/disable" if !KUNIT_ALL_TESTS
+	depends on KUNIT
+	default KUNIT_ALL_TESTS
+	help
+	  This builds the kunit tests for the refcounted interrupt
+	  infrastructure. It verifies the correctness of single, nested,
+	  and multiple interrupt enable/disable state changes and ensures
+	  that the underlying reference counting mechanisms work as expected.
+
+	  If unsure, say N.
+
 endmenu
 
 config GENERIC_IRQ_MULTI_HANDLER
diff --git a/kernel/irq/Makefile b/kernel/irq/Makefile
index 44c4d6f..0e5df96 100644
--- a/kernel/irq/Makefile
+++ b/kernel/irq/Makefile
@@ -16,4 +16,4 @@ obj-$(CONFIG_SMP) += affinity.o
 obj-$(CONFIG_GENERIC_IRQ_DEBUGFS) += debugfs.o
 obj-$(CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR) += matrix.o
 obj-$(CONFIG_IRQ_KUNIT_TEST) += irq_test.o
-obj-$(CONFIG_KUNIT) += refcount_interrupt_test.o
+obj-$(CONFIG_REFCOUNT_INTERRUPT_KUNIT_TEST) += refcount_interrupt_test.o