include/linux/iova_bitmap.h
Source file repositories/reference/linux-study-clean/include/linux/iova_bitmap.h
File Facts
- System
- Linux kernel
- Corpus path
include/linux/iova_bitmap.h- Extension
.h- Size
- 1343 bytes
- Lines
- 53
- Domain
- Core OS
- Bucket
- Core Kernel Interface
- 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/types.hlinux/errno.h
Detected Declarations
struct iova_bitmapfunction iova_bitmap_freefunction iova_bitmap_set
Annotated Snippet
#ifndef _IOVA_BITMAP_H_
#define _IOVA_BITMAP_H_
#include <linux/types.h>
#include <linux/errno.h>
struct iova_bitmap;
typedef int (*iova_bitmap_fn_t)(struct iova_bitmap *bitmap,
unsigned long iova, size_t length,
void *opaque);
#if IS_ENABLED(CONFIG_IOMMUFD_DRIVER)
struct iova_bitmap *iova_bitmap_alloc(unsigned long iova, size_t length,
unsigned long page_size,
u64 __user *data);
void iova_bitmap_free(struct iova_bitmap *bitmap);
int iova_bitmap_for_each(struct iova_bitmap *bitmap, void *opaque,
iova_bitmap_fn_t fn);
void iova_bitmap_set(struct iova_bitmap *bitmap,
unsigned long iova, size_t length);
#else
static inline struct iova_bitmap *iova_bitmap_alloc(unsigned long iova,
size_t length,
unsigned long page_size,
u64 __user *data)
{
return NULL;
}
static inline void iova_bitmap_free(struct iova_bitmap *bitmap)
{
}
static inline int iova_bitmap_for_each(struct iova_bitmap *bitmap, void *opaque,
iova_bitmap_fn_t fn)
{
return -EOPNOTSUPP;
}
static inline void iova_bitmap_set(struct iova_bitmap *bitmap,
unsigned long iova, size_t length)
{
}
#endif
#endif
Annotation
- Immediate include surface: `linux/types.h`, `linux/errno.h`.
- Detected declarations: `struct iova_bitmap`, `function iova_bitmap_free`, `function iova_bitmap_set`.
- Atlas domain: Core OS / Core Kernel Interface.
- 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.