include/linux/init.h
Source file repositories/reference/linux-study-clean/include/linux/init.h
File Facts
- System
- Linux kernel
- Corpus path
include/linux/init.h- Extension
.h- Size
- 12128 bytes
- Lines
- 396
- Domain
- Core OS
- Bucket
- Core Kernel Interface
- Inferred role
- Core OS: exported/initcall integration point
- Status
- integration implementation candidate
Why This File Exists
Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
- Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
- Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/build_bug.hlinux/compiler.hlinux/stringify.hlinux/types.h
Detected Declarations
struct file_system_typestruct obs_kernel_paramfunction initcall_from_entryfunction initcall_from_entry
Annotated Snippet
#define core_initcall(fn) __define_initcall(fn, 1)
#define core_initcall_sync(fn) __define_initcall(fn, 1s)
#define postcore_initcall(fn) __define_initcall(fn, 2)
#define postcore_initcall_sync(fn) __define_initcall(fn, 2s)
#define arch_initcall(fn) __define_initcall(fn, 3)
#define arch_initcall_sync(fn) __define_initcall(fn, 3s)
#define subsys_initcall(fn) __define_initcall(fn, 4)
#define subsys_initcall_sync(fn) __define_initcall(fn, 4s)
#define fs_initcall(fn) __define_initcall(fn, 5)
#define fs_initcall_sync(fn) __define_initcall(fn, 5s)
#define rootfs_initcall(fn) __define_initcall(fn, rootfs)
#define device_initcall(fn) __define_initcall(fn, 6)
#define device_initcall_sync(fn) __define_initcall(fn, 6s)
#define late_initcall(fn) __define_initcall(fn, 7)
#define late_initcall_sync(fn) __define_initcall(fn, 7s)
#define __initcall(fn) device_initcall(fn)
#define __exitcall(fn) \
static exitcall_t __exitcall_##fn __exit_call = fn
#define console_initcall(fn) ___define_initcall(fn, con, .con_initcall)
struct obs_kernel_param {
const char *str;
int (*setup_func)(char *);
int early;
};
extern const struct obs_kernel_param __setup_start[], __setup_end[];
/*
* Only for really core code. See moduleparam.h for the normal way.
*
* Force the alignment so the compiler doesn't space elements of the
* obs_kernel_param "array" too far apart in .init.setup.
*/
#define __setup_param(str, unique_id, fn, early) \
static const char __setup_str_##unique_id[] __initconst \
__aligned(1) = str; \
static struct obs_kernel_param __setup_##unique_id \
__used __section(".init.setup") \
__aligned(__alignof__(struct obs_kernel_param)) \
= { __setup_str_##unique_id, fn, early }
/*
* NOTE: __setup functions return values:
* @fn returns 1 (or non-zero) if the option argument is "handled"
* and returns 0 if the option argument is "not handled".
*/
#define __setup(str, fn) \
__setup_param(str, fn, fn, 0)
/*
* NOTE: @fn is as per module_param, not __setup!
* I.e., @fn returns 0 for no error or non-zero for error
* (possibly @fn returns a -errno value, but it does not matter).
* Emits warning if @fn returns non-zero.
*/
#define early_param(str, fn) \
__setup_param(str, fn, fn, 1)
#define early_param_on_off(str_on, str_off, var, config) \
\
int var = IS_ENABLED(config); \
\
static int __init parse_##var##_on(char *arg) \
{ \
var = 1; \
return 0; \
} \
early_param(str_on, parse_##var##_on); \
\
static int __init parse_##var##_off(char *arg) \
{ \
var = 0; \
return 0; \
} \
early_param(str_off, parse_##var##_off)
/* Relies on boot_command_line being set */
void __init parse_early_param(void);
void __init parse_early_options(char *cmdline);
#endif /* __ASSEMBLY__ */
#else /* MODULE */
#define __setup_param(str, unique_id, fn) /* nothing */
#define __setup(str, func) /* nothing */
#endif
Annotation
- Immediate include surface: `linux/build_bug.h`, `linux/compiler.h`, `linux/stringify.h`, `linux/types.h`.
- Detected declarations: `struct file_system_type`, `struct obs_kernel_param`, `function initcall_from_entry`, `function initcall_from_entry`.
- Atlas domain: Core OS / Core Kernel Interface.
- Implementation status: integration implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.