linux-kernel - [PATCH 1/2] Allow constructor name selection by architecture.

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Message-Id: <1338230018-31052-2-git-send-email-vincent.sanders@collabora.co.uk>
Date:	Mon, 28 May 2012 19:33:37 +0100
From:	Vincent Sanders <vincent.sanders@...labora.co.uk>
To:	Russell King <linux@....linux.org.uk>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnd Bergmann <arnd@...db.de>,
	Vincent Sanders <vince@...labora.co.uk>,
	Vincent Sanders <vincent.sanders@...labora.co.uk>
Subject: [PATCH 1/2] Allow constructor name selection by architecture.

From: Vincent Sanders <vince@...labora.co.uk>

The constructor symbol name is different between platforms. Allow this
to be selected by configuration and set suitable default values.

Signed-off-by: Vincent Sanders <vincent.sanders@...labora.co.uk>
---
 include/asm-generic/vmlinux.lds.h |    6 +++---
 init/Kconfig                      |    6 ++++++
 kernel/module.c                   |    2 +-
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 8aeadf6..fd34808 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -471,9 +471,9 @@
 	}
 
 #ifdef CONFIG_CONSTRUCTORS
-#define KERNEL_CTORS()	. = ALIGN(8);			   \
-			VMLINUX_SYMBOL(__ctors_start) = .; \
-			*(.ctors)			   \
+#define KERNEL_CTORS()	. = ALIGN(8);					\
+			VMLINUX_SYMBOL(__ctors_start) = .;		\
+			*(CONFIG_CONSTRUCTORS_NAME)			\
 			VMLINUX_SYMBOL(__ctors_end) = .;
 #else
 #define KERNEL_CTORS()
diff --git a/init/Kconfig b/init/Kconfig
index 6cfd71d..52181a1 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -20,6 +20,12 @@ config CONSTRUCTORS
 	bool
 	depends on !UML
 
+config CONSTRUCTORS_NAME
+	string
+	depends on CONSTRUCTORS
+	default ".init_array" if ARM && AEABI
+	default ".ctors"
+
 config HAVE_IRQ_WORK
 	bool
 
diff --git a/kernel/module.c b/kernel/module.c
index 78ac6ec..e5fad5e 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2600,7 +2600,7 @@ static void find_module_sections(struct module *mod, struct load_info *info)
 	mod->unused_gpl_crcs = section_addr(info, "__kcrctab_unused_gpl");
 #endif
 #ifdef CONFIG_CONSTRUCTORS
-	mod->ctors = section_objs(info, ".ctors",
+	mod->ctors = section_objs(info, CONFIG_CONSTRUCTORS_NAME,
 				  sizeof(*mod->ctors), &mod->num_ctors);
 #endif
 
-- 
1.7.10

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