linux-kernel - [RFC v1 1/6] vmlinux.lds.h: add linker section for KUnit test suites

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Message-Id: <20191216220555.245089-2-brendanhiggins@google.com>
Date:   Mon, 16 Dec 2019 14:05:50 -0800
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     jdike@...toit.com, richard@....at, anton.ivanov@...bridgegreys.com,
        arnd@...db.de, keescook@...omium.org, skhan@...uxfoundation.org,
        alan.maguire@...cle.com, yzaikin@...gle.com, davidgow@...gle.com,
        akpm@...ux-foundation.org, rppt@...ux.ibm.com
Cc:     gregkh@...uxfoundation.org, sboyd@...nel.org, logang@...tatee.com,
        mcgrof@...nel.org, knut.omang@...cle.com,
        linux-um@...ts.infradead.org, linux-arch@...r.kernel.org,
        linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Brendan Higgins <brendanhiggins@...gle.com>
Subject: [RFC v1 1/6] vmlinux.lds.h: add linker section for KUnit test suites

Add a linker section where KUnit can put references to its test suites.
This patch is the first step in transitioning to dispatching all KUnit
tests from a centralized executor rather than having each as its own
separate late_initcall.

Signed-off-by: Brendan Higgins <brendanhiggins@...gle.com>
Co-developed-by: Iurii Zaikin <yzaikin@...gle.com>
Signed-off-by: Iurii Zaikin <yzaikin@...gle.com>
---
 include/asm-generic/vmlinux.lds.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index e00f41aa8ec4f..99a866f49cb3d 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -856,6 +856,13 @@
 		KEEP(*(.con_initcall.init))				\
 		__con_initcall_end = .;
 
+/* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */
+#define KUNIT_TEST_SUITES						\
+		. = ALIGN(8);						\
+		__kunit_suites_start = .;				\
+		KEEP(*(.kunit_test_suites))				\
+		__kunit_suites_end = .;
+
 #ifdef CONFIG_BLK_DEV_INITRD
 #define INIT_RAM_FS							\
 	. = ALIGN(4);							\
@@ -1024,6 +1031,7 @@
 		INIT_CALLS						\
 		CON_INITCALL						\
 		INIT_RAM_FS						\
+		KUNIT_TEST_SUITES					\
 	}
 
 #define BSS_SECTION(sbss_align, bss_align, stop_align)			\
-- 
2.24.1.735.g03f4e72817-goog