arch/arm/boot/compressed/misc.h

File Facts

System

Linux kernel

Corpus path

arch/arm/boot/compressed/misc.h

Extension

.h

Size

654 bytes

Lines

22

Domain

Architecture Layer

Bucket

arch/arm

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

• linux/compiler.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef MISC_H
#define MISC_H

#include <linux/compiler.h>

void error(char *x) __noreturn;
extern unsigned long free_mem_ptr;
extern unsigned long free_mem_end_ptr;
void __div0(void);
void
decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
		  unsigned long free_mem_ptr_end_p, int arch_id);
void __fortify_panic(const u8 reason, size_t avail, size_t size);
int atags_to_fdt(void *atag_list, void *fdt, int total_space);
uint32_t fdt_check_mem_start(uint32_t mem_start, const void *fdt);
int do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x));

extern char input_data[];
extern char input_data_end[];

#endif

Annotation

• Immediate include surface: `linux/compiler.h`.
• Atlas domain: Architecture Layer / arch/arm.
• Implementation status: source 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.