1
2#ifndef _LINUX_INIT_H
3#define _LINUX_INIT_H
4
5#include <linux/compiler.h>
6#include <linux/types.h>
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43#define __init __section(.init.text) __cold __inittrace __latent_entropy
44#define __initdata __section(.init.data)
45#define __initconst __section(.init.rodata)
46#define __exitdata __section(.exit.data)
47#define __exit_call __used __section(.exitcall.exit)
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66#define __ref __section(.ref.text) noinline
67#define __refdata __section(.ref.data)
68#define __refconst __section(.ref.rodata)
69
70#ifdef MODULE
71#define __exitused
72#define __inittrace notrace
73#else
74#define __exitused __used
75#define __inittrace
76#endif
77
78#define __exit __section(.exit.text) __exitused __cold notrace
79
80
81#define __meminit __section(.meminit.text) __cold notrace \
82 __latent_entropy
83#define __meminitdata __section(.meminit.data)
84#define __meminitconst __section(.meminit.rodata)
85#define __memexit __section(.memexit.text) __exitused __cold notrace
86#define __memexitdata __section(.memexit.data)
87#define __memexitconst __section(.memexit.rodata)
88
89
90#define __HEAD .section ".head.text","ax"
91#define __INIT .section ".init.text","ax"
92#define __FINIT .previous
93
94#define __INITDATA .section ".init.data","aw",%progbits
95#define __INITRODATA .section ".init.rodata","a",%progbits
96#define __FINITDATA .previous
97
98#define __MEMINIT .section ".meminit.text", "ax"
99#define __MEMINITDATA .section ".meminit.data", "aw"
100#define __MEMINITRODATA .section ".meminit.rodata", "a"
101
102
103#define __REF .section ".ref.text", "ax"
104#define __REFDATA .section ".ref.data", "aw"
105#define __REFCONST .section ".ref.rodata", "a"
106
107#ifndef __ASSEMBLY__
108
109
110
111typedef int (*initcall_t)(void);
112typedef void (*exitcall_t)(void);
113
114extern initcall_t __con_initcall_start[], __con_initcall_end[];
115extern initcall_t __security_initcall_start[], __security_initcall_end[];
116
117
118typedef void (*ctor_fn_t)(void);
119
120
121extern int do_one_initcall(initcall_t fn);
122extern char __initdata boot_command_line[];
123extern char *saved_command_line;
124extern unsigned int reset_devices;
125
126
127void setup_arch(char **);
128void prepare_namespace(void);
129void __init load_default_modules(void);
130int __init init_rootfs(void);
131
132#if defined(CONFIG_STRICT_KERNEL_RWX) || defined(CONFIG_STRICT_MODULE_RWX)
133extern bool rodata_enabled;
134#endif
135#ifdef CONFIG_STRICT_KERNEL_RWX
136void mark_rodata_ro(void);
137#endif
138
139extern void (*late_time_init)(void);
140
141extern bool initcall_debug;
142
143#endif
144
145#ifndef MODULE
146
147#ifndef __ASSEMBLY__
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165#define __define_initcall(fn, id) \
166 static initcall_t __initcall_##fn##id __used \
167 __attribute__((__section__(".initcall" #id ".init"))) = fn;
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173
174#define early_initcall(fn) __define_initcall(fn, early)
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183#define pure_initcall(fn) __define_initcall(fn, 0)
184
185#define core_initcall(fn) __define_initcall(fn, 1)
186#define core_initcall_sync(fn) __define_initcall(fn, 1s)
187#define postcore_initcall(fn) __define_initcall(fn, 2)
188#define postcore_initcall_sync(fn) __define_initcall(fn, 2s)
189#define arch_initcall(fn) __define_initcall(fn, 3)
190#define arch_initcall_sync(fn) __define_initcall(fn, 3s)
191#define subsys_initcall(fn) __define_initcall(fn, 4)
192#define subsys_initcall_sync(fn) __define_initcall(fn, 4s)
193#define fs_initcall(fn) __define_initcall(fn, 5)
194#define fs_initcall_sync(fn) __define_initcall(fn, 5s)
195#define rootfs_initcall(fn) __define_initcall(fn, rootfs)
196#define device_initcall(fn) __define_initcall(fn, 6)
197#define device_initcall_sync(fn) __define_initcall(fn, 6s)
198#define late_initcall(fn) __define_initcall(fn, 7)
199#define late_initcall_sync(fn) __define_initcall(fn, 7s)
200
201#define __initcall(fn) device_initcall(fn)
202
203#define __exitcall(fn) \
204 static exitcall_t __exitcall_##fn __exit_call = fn
205
206#define console_initcall(fn) \
207 static initcall_t __initcall_##fn \
208 __used __section(.con_initcall.init) = fn
209
210#define security_initcall(fn) \
211 static initcall_t __initcall_##fn \
212 __used __section(.security_initcall.init) = fn
213
214struct obs_kernel_param {
215 const char *str;
216 int (*setup_func)(char *);
217 int early;
218};
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226#define __setup_param(str, unique_id, fn, early) \
227 static const char __setup_str_##unique_id[] __initconst \
228 __aligned(1) = str; \
229 static struct obs_kernel_param __setup_##unique_id \
230 __used __section(.init.setup) \
231 __attribute__((aligned((sizeof(long))))) \
232 = { __setup_str_##unique_id, fn, early }
233
234#define __setup(str, fn) \
235 __setup_param(str, fn, fn, 0)
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240
241#define early_param(str, fn) \
242 __setup_param(str, fn, fn, 1)
243
244#define early_param_on_off(str_on, str_off, var, config) \
245 \
246 int var = IS_ENABLED(config); \
247 \
248 static int __init parse_##var##_on(char *arg) \
249 { \
250 var = 1; \
251 return 0; \
252 } \
253 __setup_param(str_on, parse_##var##_on, parse_##var##_on, 1); \
254 \
255 static int __init parse_##var##_off(char *arg) \
256 { \
257 var = 0; \
258 return 0; \
259 } \
260 __setup_param(str_off, parse_##var##_off, parse_##var##_off, 1)
261
262
263void __init parse_early_param(void);
264void __init parse_early_options(char *cmdline);
265#endif
266
267#else
268
269#define __setup_param(str, unique_id, fn)
270#define __setup(str, func)
271#endif
272
273
274#define __nosavedata __section(.data..nosave)
275
276#ifdef MODULE
277#define __exit_p(x) x
278#else
279#define __exit_p(x) NULL
280#endif
281
282#endif
283