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Diffstat (limited to 'include/linux/init.h')
-rw-r--r--include/linux/init.h130
1 files changed, 74 insertions, 56 deletions
diff --git a/include/linux/init.h b/include/linux/init.h
index 5141381a7527..2efbda016741 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -40,10 +40,10 @@
/* These are for everybody (although not all archs will actually
discard it in modules) */
-#define __init __attribute__ ((__section__ (".init.text"))) __cold
-#define __initdata __attribute__ ((__section__ (".init.data")))
-#define __exitdata __attribute__ ((__section__(".exit.data")))
-#define __exit_call __attribute_used__ __attribute__ ((__section__ (".exitcall.exit")))
+#define __init __section(.init.text) __cold
+#define __initdata __section(.init.data)
+#define __exitdata __section(.exit.data)
+#define __exit_call __used __section(.exitcall.exit)
/* modpost check for section mismatches during the kernel build.
* A section mismatch happens when there are references from a
@@ -52,25 +52,81 @@
* when early init has completed so all such references are potential bugs.
* For exit sections the same issue exists.
* The following markers are used for the cases where the reference to
- * the init/exit section (code or data) is valid and will teach modpost
- * not to issue a warning.
+ * the *init / *exit section (code or data) is valid and will teach
+ * modpost not to issue a warning.
* The markers follow same syntax rules as __init / __initdata. */
-#define __init_refok noinline __attribute__ ((__section__ (".text.init.refok")))
-#define __initdata_refok __attribute__ ((__section__ (".data.init.refok")))
-#define __exit_refok noinline __attribute__ ((__section__ (".exit.text.refok")))
+#define __ref __section(.ref.text) noinline
+#define __refdata __section(.ref.data)
+#define __refconst __section(.ref.rodata)
+
+/* backward compatibility note
+ * A few places hardcode the old section names:
+ * .text.init.refok
+ * .data.init.refok
+ * .exit.text.refok
+ * They should be converted to use the defines from this file
+ */
+
+/* compatibility defines */
+#define __init_refok __ref
+#define __initdata_refok __refdata
+#define __exit_refok __ref
+
#ifdef MODULE
-#define __exit __attribute__ ((__section__(".exit.text"))) __cold
+#define __exitused
#else
-#define __exit __attribute_used__ __attribute__ ((__section__(".exit.text"))) __cold
+#define __exitused __used
#endif
+#define __exit __section(.exit.text) __exitused __cold
+
+/* Used for HOTPLUG */
+#define __devinit __section(.devinit.text) __cold
+#define __devinitdata __section(.devinit.data)
+#define __devinitconst __section(.devinit.rodata)
+#define __devexit __section(.devexit.text) __exitused __cold
+#define __devexitdata __section(.devexit.data)
+#define __devexitconst __section(.devexit.rodata)
+
+/* Used for HOTPLUG_CPU */
+#define __cpuinit __section(.cpuinit.text) __cold
+#define __cpuinitdata __section(.cpuinit.data)
+#define __cpuinitconst __section(.cpuinit.rodata)
+#define __cpuexit __section(.cpuexit.text) __exitused __cold
+#define __cpuexitdata __section(.cpuexit.data)
+#define __cpuexitconst __section(.cpuexit.rodata)
+
+/* Used for MEMORY_HOTPLUG */
+#define __meminit __section(.meminit.text) __cold
+#define __meminitdata __section(.meminit.data)
+#define __meminitconst __section(.meminit.rodata)
+#define __memexit __section(.memexit.text) __exitused __cold
+#define __memexitdata __section(.memexit.data)
+#define __memexitconst __section(.memexit.rodata)
+
/* For assembly routines */
#define __INIT .section ".init.text","ax"
-#define __INIT_REFOK .section ".text.init.refok","ax"
#define __FINIT .previous
+
#define __INITDATA .section ".init.data","aw"
-#define __INITDATA_REFOK .section ".data.init.refok","aw"
+
+#define __DEVINIT .section ".devinit.text", "ax"
+#define __DEVINITDATA .section ".devinit.data", "aw"
+
+#define __CPUINIT .section ".cpuinit.text", "ax"
+#define __CPUINITDATA .section ".cpuinit.data", "aw"
+
+#define __MEMINIT .section ".meminit.text", "ax"
+#define __MEMINITDATA .section ".meminit.data", "aw"
+
+/* silence warnings when references are OK */
+#define __REF .section ".ref.text", "ax"
+#define __REFDATA .section ".ref.data", "aw"
+#define __REFCONST .section ".ref.rodata", "aw"
+/* backward compatibility */
+#define __INIT_REFOK .section __REF
+#define __INITDATA_REFOK .section __REFDATA
#ifndef __ASSEMBLY__
/*
@@ -108,7 +164,7 @@ void prepare_namespace(void);
*/
#define __define_initcall(level,fn,id) \
- static initcall_t __initcall_##fn##id __attribute_used__ \
+ static initcall_t __initcall_##fn##id __used \
__attribute__((__section__(".initcall" level ".init"))) = fn
/*
@@ -142,11 +198,11 @@ void prepare_namespace(void);
#define console_initcall(fn) \
static initcall_t __initcall_##fn \
- __attribute_used__ __attribute__((__section__(".con_initcall.init")))=fn
+ __used __section(.con_initcall.init) = fn
#define security_initcall(fn) \
static initcall_t __initcall_##fn \
- __attribute_used__ __attribute__((__section__(".security_initcall.init"))) = fn
+ __used __section(.security_initcall.init) = fn
struct obs_kernel_param {
const char *str;
@@ -163,8 +219,7 @@ struct obs_kernel_param {
#define __setup_param(str, unique_id, fn, early) \
static char __setup_str_##unique_id[] __initdata __aligned(1) = str; \
static struct obs_kernel_param __setup_##unique_id \
- __attribute_used__ \
- __attribute__((__section__(".init.setup"))) \
+ __used __section(.init.setup) \
__attribute__((aligned((sizeof(long))))) \
= { __setup_str_##unique_id, fn, early }
@@ -242,7 +297,7 @@ void __init parse_early_param(void);
#endif
/* Data marked not to be saved by software suspend */
-#define __nosavedata __attribute__ ((__section__ (".data.nosave")))
+#define __nosavedata __section(.data.nosave)
/* This means "can be init if no module support, otherwise module load
may call it." */
@@ -254,43 +309,6 @@ void __init parse_early_param(void);
#define __initdata_or_module __initdata
#endif /*CONFIG_MODULES*/
-#ifdef CONFIG_HOTPLUG
-#define __devinit
-#define __devinitdata
-#define __devexit
-#define __devexitdata
-#else
-#define __devinit __init
-#define __devinitdata __initdata
-#define __devexit __exit
-#define __devexitdata __exitdata
-#endif
-
-#ifdef CONFIG_HOTPLUG_CPU
-#define __cpuinit
-#define __cpuinitdata
-#define __cpuexit
-#define __cpuexitdata
-#else
-#define __cpuinit __init
-#define __cpuinitdata __initdata
-#define __cpuexit __exit
-#define __cpuexitdata __exitdata
-#endif
-
-#if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_ACPI_HOTPLUG_MEMORY) \
- || defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)
-#define __meminit
-#define __meminitdata
-#define __memexit
-#define __memexitdata
-#else
-#define __meminit __init
-#define __meminitdata __initdata
-#define __memexit __exit
-#define __memexitdata __exitdata
-#endif
-
/* Functions marked as __devexit may be discarded at kernel link time, depending
on config options. Newer versions of binutils detect references from
retained sections to discarded sections and flag an error. Pointers to