diff options
Diffstat (limited to 'include/linux/init.h')
| -rw-r--r-- | include/linux/init.h | 130 |
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 |