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- /* $Id: init.h,v 1.2 2002/04/26 23:09:06 smilcke Exp $ */
-
- #ifndef _LINUX_INIT_H
- #define _LINUX_INIT_H
-
- /* These macros are used to mark some functions or
- * initialized data (doesn't apply to uninitialized data)
- * as `initialization' functions. The kernel can take this
- * as hint that the function is used only during the initialization
- * phase and free up used memory resources after
- *
- * Usage:
- * For functions:
- *
- * You should add __init immediately before the function name, like:
- *
- * static void __init initme(int x, int y)
- * {
- * extern int z; z = x * y;
- * }
- *
- * If the function has a prototype somewhere, you can also add
- * __init between closing brace of the prototype and semicolon:
- *
- * extern int initialize_foobar_device(int, int, int) __init;
- *
- * For initialized data:
- * You should insert __initdata between the variable name and equal
- * sign followed by value, e.g.:
- *
- * static int init_variable __initdata = 0;
- * static char linux_logo[] __initdata = { 0x32, 0x36, ... };
- *
- * For initialized data not at file scope, i.e. within a function,
- * you should use __initlocaldata instead, due to a bug in GCC 2.7.
- */
-
- #ifndef MODULE
-
- #ifndef __ASSEMBLY__
-
- /*
- * Used for initialization calls..
- */
- typedef int (*initcall_t)(void);
-
- extern initcall_t __initcall_start, __initcall_end;
-
- #define __initcall(fn) \
- static initcall_t __initcall_##fn __init_call = fn
-
- /*
- * Used for kernel command line parameter setup
- */
- struct kernel_param {
- const char *str;
- int (*setup_func)(char *);
- };
-
- extern struct kernel_param __setup_start, __setup_end;
-
- #define __setup(str, fn) \
- static char __setup_str_##fn[] __initdata = str; \
- static struct kernel_param __setup_##fn __initsetup = { __setup_str_##fn, fn }
-
- #endif /* __ASSEMBLY__ */
-
- /*
- * Mark functions and data as being only used at initialization
- * or exit time.
- */
- #define __init
- #define __exit
- #define __initdata
- #define __exitdata
- #define __initsetup
- #define __init_call
- #define __devinitdata
- #define __devinit
- #define __devexit
-
- /* For assembly routines */
- #define __INIT
- #define __FINIT
- #define __INITDATA
-
- #define module_init(x) __initcall(x);
- #define module_exit(x) /* nothing */
-
- #else
-
- #define __init
- #define __exit
- #define __initdata
- #define __exitdata
- #define __initcall
- /* For assembly routines */
- #define __INIT
- #define __FINIT
- #define __INITDATA
- #define __devinitdata
- #define __devinit
- #define __devexit
-
- /* Not sure what version aliases were introduced in, but certainly in 2.95. */
- #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
- #define module_init(x) int init_module(void) __attribute__((alias(#x)));
- #define module_exit(x) void cleanup_module(void) __attribute__((alias(#x)));
- #else
- #define module_init(x) int init_module(void) { return x(); }
- #define module_exit(x) void cleanup_module(void) { x(); }
- #endif
-
- #define __setup(str,func) /* nothing */
-
- #endif
-
- #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)
- #define __initlocaldata __initdata
- #else
- #define __initlocaldata
- #endif
-
- #endif /* _LINUX_INIT_H */
-