From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1397B391832 for ; Fri, 7 Aug 2026 07:02:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786086157; cv=none; b=q1MaeOsUCK1gN6yABNqTESEzGcwUD77Wde110Ah43Xk9mUocBoMiFMc2WRkj8EtM7O+0lYSX6rXi2W56P9FS93FwkoZ9OgHAGko5bkxDP8639Ayg0tgJ8dxqIPBI3UUgkuhrGePAwvGLOYE5WtVLbSMpXn/TrhUcpMH5PDGtRjM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786086157; c=relaxed/simple; bh=M6+m/0c8IuZ1xZ+UnruHtoqzFvPgWzMV2K9poAY63Gc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ExJEmsqkOy5doyTkuAOjyv42wzTn88hhwp/tZag4IcfZJllDwhMn2NGRbs/TUzFNKsXkGJzMynpAPQhLHdmggB1ztudljeYtKxgMFp/73mYL4+wNGWhzKJ/ZBzdk74eFTLjf18pc/WYxhdheJHdf4hPr74aCgUnX/qt//1UZ9Oc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fhtS8WTk; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fhtS8WTk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 047EA1F000E9; Fri, 7 Aug 2026 07:02:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786086155; bh=+D9X1kYa+VRU9yRO4WbCcrFIABEuEB98nxaJDGa/Hfg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=fhtS8WTkQfLEhFgeD5UbV1gqUpcGm7Rck9Xg4GbEBUiwXXLjWByeI2p/1vTmnlyk5 rmHecua1jdZ1jLwdz6CDBfjSeS+MlzzOy/3vdPqFBVDLRSI+vQW8qW1QAIQs5mXzPk hyVHTTP29h/DSn7bC8uiBVEOZN5zWUvO8x7A3bvlPJNPe79mQDTpZb7Qq3ZgsHXjMN Y+v0wsEuYkdiUoqXQQsG1HT6UayWsa09wAmAczPJwSsTQ4pJtNBKy55vSIXHJD2psE 91UoJQsCviribBzMfU6CM6I7zr7NZNKNQwpdlG8reNu3PES/b/g+HOOK5qyY/4TekN NvRFAHJngoOyQ== Received: from phl-compute-05.internal (phl-compute-05.internal [10.202.2.45]) by mailfauth.phl.internal (Postfix) with ESMTP id 1D774F40066; Fri, 7 Aug 2026 03:02:34 -0400 (EDT) Received: from phl-frontend-03 ([10.202.2.162]) by phl-compute-05.internal (MEProxy); Fri, 07 Aug 2026 03:02:34 -0400 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: dmFkZTELT6mPBN+tf+gYDjbmfxF2aJuNia3fHRbo+cksodwgHpv175RY/La8br7LVuLKD+ xpTrulxkYenRUqjuFjoYpWp5kB81fkgSYs4cUOn9Aimg2+sWPDBZPSJD0AkLNVKo9ymnEn XwkNJDHucJ7KY3ALZ5VcWOWe5XHuNtoJV5e7Q54FFSKl7KOd+nrEm1L6dR4Jdu+LjwwV/e gMJ05NqNZsVzzu9M3eDFzAUAJPeoh4s2jJHbhIzGNi7DAZxkNRx1H6hWOvNKjwmDuMbW1g 3/Yvg82sjVAOqgIP9o+xyvh3ddqbO1HSSPQ13n3n5YTt3W/2pxiARls47VLAs4X6PdSfH0 wdndMsJjTG3YJRTfVWddIDNZEXa2Bgy24oJasNFwLCsCmNNPB5bcP4ECzegpNSkN55J9mV 54kuc4ywcJYNiK5PAZKjnDCH8/7Tzihy4t4YMlOJvExlSntHmz1c5abnQTysgytqfLPvr3 F1BM+stAcS5QFoQYc+VO1vaSYyDRN4bdNDI9WPTy92hQW+dDm5dkpo1JrYa7mx2RlkNRNW HSHXJLwSDSd/A3V8AOMBbzzZAJLaC3wP8E9ezecoLNy9FRACV5Elze3eicAW3uWjrqUFfT vZFyihjZvqAVMC9xMdlJiICUo/VsYo/BF8DbeoEjgt0+t5CWKtxDWWYDDdvA X-ME-Proxy: Feedback-ID: i8dbe485b:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 7 Aug 2026 03:02:33 -0400 (EDT) From: Boqun Feng To: Peter Zijlstra Cc: "Ingo Molnar" , "Will Deacon" , "Boqun Feng" , "Waiman Long" , "Gary Guo" , "Alice Ryhl" , "Lyude Paul" , "Daniel Almeida" , =?UTF-8?q?Onur=20=C3=96zkan?= , "Miguel Ojeda" , "Danilo Krummrich" , linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, Shrikanth Hegde , Madhavan Srinivasan , "Christophe Leroy (CS GROUP)" Subject: [PATCH v5 06/18] irq: Add KUnit test for refcounted interrupt enable/disable Date: Fri, 7 Aug 2026 00:02:03 -0700 Message-ID: <20260807070218.27144-7-boqun@kernel.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260807070218.27144-1-boqun@kernel.org> References: <20260807070218.27144-1-boqun@kernel.org> Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Lyude Paul 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 Signed-off-by: Boqun Feng --- kernel/irq/Makefile | 1 + kernel/irq/refcount_interrupt_test.c | 109 +++++++++++++++++++++++++++ 2 files changed, 110 insertions(+) create mode 100644 kernel/irq/refcount_interrupt_test.c diff --git a/kernel/irq/Makefile b/kernel/irq/Makefile index 86a2e5ae08f9..44c4d6fc502a 100644 --- a/kernel/irq/Makefile +++ b/kernel/irq/Makefile @@ -16,3 +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 diff --git a/kernel/irq/refcount_interrupt_test.c b/kernel/irq/refcount_interrupt_test.c new file mode 100644 index 000000000000..ca904dba24b9 --- /dev/null +++ b/kernel/irq/refcount_interrupt_test.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KUnit test for refcounted interrupt enable/disables. + */ + +#include +#include + +#define TEST_IRQ_ON() KUNIT_EXPECT_FALSE(test, irqs_disabled()) +#define TEST_IRQ_OFF() KUNIT_EXPECT_TRUE(test, irqs_disabled()) + +/* ===== Test cases ===== */ +static void test_single_irq_change(struct kunit *test) +{ + local_interrupt_disable(); + TEST_IRQ_OFF(); + local_interrupt_enable(); +} + +static void test_nested_irq_change(struct kunit *test) +{ + local_interrupt_disable(); + TEST_IRQ_OFF(); + local_interrupt_disable(); + TEST_IRQ_OFF(); + local_interrupt_disable(); + TEST_IRQ_OFF(); + + local_interrupt_enable(); + TEST_IRQ_OFF(); + local_interrupt_enable(); + TEST_IRQ_OFF(); + local_interrupt_enable(); + TEST_IRQ_ON(); +} + +static void test_multiple_irq_change(struct kunit *test) +{ + local_interrupt_disable(); + TEST_IRQ_OFF(); + local_interrupt_disable(); + TEST_IRQ_OFF(); + + local_interrupt_enable(); + TEST_IRQ_OFF(); + local_interrupt_enable(); + TEST_IRQ_ON(); + + local_interrupt_disable(); + TEST_IRQ_OFF(); + local_interrupt_enable(); + TEST_IRQ_ON(); +} + +static void test_irq_save(struct kunit *test) +{ + unsigned long flags; + + local_irq_save(flags); + TEST_IRQ_OFF(); + local_interrupt_disable(); + TEST_IRQ_OFF(); + local_interrupt_enable(); + TEST_IRQ_OFF(); + local_irq_restore(flags); + TEST_IRQ_ON(); + + local_interrupt_disable(); + TEST_IRQ_OFF(); + local_irq_save(flags); + TEST_IRQ_OFF(); + local_irq_restore(flags); + TEST_IRQ_OFF(); + local_interrupt_enable(); + TEST_IRQ_ON(); +} + +static struct kunit_case test_cases[] = { + KUNIT_CASE(test_single_irq_change), + KUNIT_CASE(test_nested_irq_change), + KUNIT_CASE(test_multiple_irq_change), + KUNIT_CASE(test_irq_save), + {}, +}; + +/* init and exit are the same. */ +static int test_init(struct kunit *test) +{ + TEST_IRQ_ON(); + + return 0; +} + +static void test_exit(struct kunit *test) +{ + TEST_IRQ_ON(); +} + +static struct kunit_suite refcount_interrupt_test_suite = { + .name = "refcount_interrupt", + .test_cases = test_cases, + .init = test_init, + .exit = test_exit, +}; + +kunit_test_suite(refcount_interrupt_test_suite); +MODULE_AUTHOR("Lyude Paul "); +MODULE_DESCRIPTION("Refcounted interrupt unit test suite"); +MODULE_LICENSE("GPL"); -- 2.50.1 (Apple Git-155)