Release 4.7 include/asm-generic/sections.h
#ifndef _ASM_GENERIC_SECTIONS_H_
#define _ASM_GENERIC_SECTIONS_H_
/* References to section boundaries */
#include <linux/compiler.h>
#include <linux/types.h>
/*
* Usage guidelines:
* _text, _data: architecture specific, don't use them in arch-independent code
* [_stext, _etext]: contains .text.* sections, may also contain .rodata.*
* and/or .init.* sections
* [_sdata, _edata]: contains .data.* sections, may also contain .rodata.*
* and/or .init.* sections.
* [__start_rodata, __end_rodata]: contains .rodata.* sections
* [__init_begin, __init_end]: contains .init.* sections, but .init.text.*
* may be out of this range on some architectures.
* [_sinittext, _einittext]: contains .init.text.* sections
* [__bss_start, __bss_stop]: contains BSS sections
*
* Following global variables are optional and may be unavailable on some
* architectures and/or kernel configurations.
* _text, _data
* __kprobes_text_start, __kprobes_text_end
* __entry_text_start, __entry_text_end
* __ctors_start, __ctors_end
*/
extern char _text[], _stext[], _etext[];
extern char _data[], _sdata[], _edata[];
extern char __bss_start[], __bss_stop[];
extern char __init_begin[], __init_end[];
extern char _sinittext[], _einittext[];
extern char _end[];
extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
extern char __kprobes_text_start[], __kprobes_text_end[];
extern char __entry_text_start[], __entry_text_end[];
extern char __start_rodata[], __end_rodata[];
/* Start and end of .ctors section - used for constructor calls. */
extern char __ctors_start[], __ctors_end[];
extern __visible const void __nosave_begin, __nosave_end;
/* function descriptor handling (if any). Override
* in asm/sections.h */
#ifndef dereference_function_descriptor
#define dereference_function_descriptor(p) (p)
#endif
/* random extra sections (if any). Override
* in asm/sections.h */
#ifndef arch_is_kernel_text
static inline int arch_is_kernel_text(unsigned long addr)
{
return 0;
}
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#endif
#ifndef arch_is_kernel_data
static inline int arch_is_kernel_data(unsigned long addr)
{
return 0;
}
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#endif
/**
* memory_contains - checks if an object is contained within a memory region
* @begin: virtual address of the beginning of the memory region
* @end: virtual address of the end of the memory region
* @virt: virtual address of the memory object
* @size: size of the memory object
*
* Returns: true if the object specified by @virt and @size is entirely
* contained within the memory region defined by @begin and @end, false
* otherwise.
*/
static inline bool memory_contains(void *begin, void *end, void *virt,
size_t size)
{
return virt >= begin && virt + size <= end;
}
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/**
* memory_intersects - checks if the region occupied by an object intersects
* with another memory region
* @begin: virtual address of the beginning of the memory regien
* @end: virtual address of the end of the memory region
* @virt: virtual address of the memory object
* @size: size of the memory object
*
* Returns: true if an object's memory region, specified by @virt and @size,
* intersects with the region specified by @begin and @end, false otherwise.
*/
static inline bool memory_intersects(void *begin, void *end, void *virt,
size_t size)
{
void *vend = virt + size;
return (virt >= begin && virt < end) || (vend >= begin && vend < end);
}
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/**
* init_section_contains - checks if an object is contained within the init
* section
* @virt: virtual address of the memory object
* @size: size of the memory object
*
* Returns: true if the object specified by @virt and @size is entirely
* contained within the init section, false otherwise.
*/
static inline bool init_section_contains(void *virt, size_t size)
{
return memory_contains(__init_begin, __init_end, virt, size);
}
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/**
* init_section_intersects - checks if the region occupied by an object
* intersects with the init section
* @virt: virtual address of the memory object
* @size: size of the memory object
*
* Returns: true if an object's memory region, specified by @virt and @size,
* intersects with the init section, false otherwise.
*/
static inline bool init_section_intersects(void *virt, size_t size)
{
return memory_intersects(__init_begin, __init_end, virt, size);
}
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#endif /* _ASM_GENERIC_SECTIONS_H_ */
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| Person | Tokens | Prop | Commits | CommitProp |
| thierry reding | thierry reding | 143 | 45.83% | 1 | 6.25% |
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| andrew morton | andrew morton | 3 | 0.96% | 1 | 6.25% |
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| Total | 312 | 100.00% | 16 | 100.00% |
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