kernel/liveupdate/kexec_handover_internal.h

File Facts

System

Linux kernel

Corpus path

kernel/liveupdate/kexec_handover_internal.h

Extension

.h

Size

1658 bytes

Lines

54

Domain

Core OS

Bucket

Scheduler, Processes, Timers, Sync, And Syscalls

Inferred role

Core OS: implementation source

Status

source 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/kexec_handover.h
• linux/list.h
• linux/types.h
• linux/debugfs.h

Detected Declarations

• struct kho_debugfs
• struct kho_debugfs
• function kho_debugfs_init
• function kho_in_debugfs_init
• function kho_debugfs_blob_add
• function kho_debugfs_blob_remove
• function kho_scratch_overlap

Annotated Snippet

struct kho_debugfs {
	struct dentry *dir;
	struct dentry *sub_fdt_dir;
	struct list_head fdt_list;
};

#else
struct kho_debugfs {};
#endif

extern struct kho_scratch *kho_scratch;
extern unsigned int kho_scratch_cnt;

#ifdef CONFIG_KEXEC_HANDOVER_DEBUGFS
int kho_debugfs_init(void);
void kho_in_debugfs_init(struct kho_debugfs *dbg, const void *fdt);
int kho_out_debugfs_init(struct kho_debugfs *dbg);
int kho_debugfs_blob_add(struct kho_debugfs *dbg, const char *name,
			 const void *blob, size_t size, bool root);
void kho_debugfs_blob_remove(struct kho_debugfs *dbg, void *blob);
#else
static inline int kho_debugfs_init(void) { return 0; }
static inline void kho_in_debugfs_init(struct kho_debugfs *dbg,
				       const void *fdt) { }
static inline int kho_out_debugfs_init(struct kho_debugfs *dbg) { return 0; }
static inline int kho_debugfs_blob_add(struct kho_debugfs *dbg,
				       const char *name, const void *blob,
				       size_t size, bool root) { return 0; }
static inline void kho_debugfs_blob_remove(struct kho_debugfs *dbg,
					   void *blob) { }
#endif /* CONFIG_KEXEC_HANDOVER_DEBUGFS */

#ifdef CONFIG_KEXEC_HANDOVER_DEBUG
bool kho_scratch_overlap(phys_addr_t phys, size_t size);
#else
static inline bool kho_scratch_overlap(phys_addr_t phys, size_t size)
{
	return false;
}
#endif /* CONFIG_KEXEC_HANDOVER_DEBUG */

#endif /* LINUX_KEXEC_HANDOVER_INTERNAL_H */

Annotation

• Immediate include surface: `linux/kexec_handover.h`, `linux/list.h`, `linux/types.h`, `linux/debugfs.h`.
• Detected declarations: `struct kho_debugfs`, `struct kho_debugfs`, `function kho_debugfs_init`, `function kho_in_debugfs_init`, `function kho_debugfs_blob_add`, `function kho_debugfs_blob_remove`, `function kho_scratch_overlap`.
• Atlas domain: Core OS / Scheduler, Processes, Timers, Sync, And Syscalls.
• 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.