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compiler.h: introduce __section()

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Add a new helper: __section() that makes a section definition
much shorter and more readable.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Sam Ravnborg 2008-01-20 18:54:48 +01:00
parent 01ba2bdc6b
commit f3fe866d59
2 changed files with 18 additions and 13 deletions
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5
include/linux/compiler.h
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@ -175,4 +175,9 @@ extern void __chk_io_ptr(const volatile void __iomem *);
#define __cold
#endif
/* Simple shorthand for a section definition */
#ifndef __section
# define __section(S) __attribute__ ((__section__(#S)))
#endif
#endif /* __LINUX_COMPILER_H */

26
include/linux/init.h
View file

@ -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 __attribute_used__ __section(.exitcall.exit)
/* modpost check for section mismatches during the kernel build.
* A section mismatch happens when there are references from a
@ -55,14 +55,14 @@
* 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 __init_refok noinline __section(.text.init.refok)
#define __initdata_refok __section(.data.init.refok)
#define __exit_refok noinline __section(.exit.text.refok)
#ifdef MODULE
#define __exit __attribute__ ((__section__(".exit.text"))) __cold
#define __exit __section(.exit.text) __cold
#else
#define __exit __attribute_used__ __attribute__ ((__section__(".exit.text"))) __cold
#define __exit __attribute_used__ __section(.exit.text) __cold
#endif
/* For assembly routines */
@ -142,11 +142,11 @@ void prepare_namespace(void);
#define console_initcall(fn) \
static initcall_t __initcall_##fn \
__attribute_used__ __attribute__((__section__(".con_initcall.init")))=fn
__attribute_used__ __section(.con_initcall.init)=fn
#define security_initcall(fn) \
static initcall_t __initcall_##fn \
__attribute_used__ __attribute__((__section__(".security_initcall.init"))) = fn
__attribute_used__ __section(.security_initcall.init) = fn
struct obs_kernel_param {
const char *str;
@ -164,7 +164,7 @@ struct obs_kernel_param {
static char __setup_str_##unique_id[] __initdata __aligned(1) = str; \
static struct obs_kernel_param __setup_##unique_id \
__attribute_used__ \
__attribute__((__section__(".init.setup"))) \
__section(.init.setup) \
__attribute__((aligned((sizeof(long))))) \
= { __setup_str_##unique_id, fn, early }
@ -242,7 +242,7 @@ 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." */