fs/iomap/trace.h

Source file repositories/reference/linux-study-clean/fs/iomap/trace.h

File Facts

System
Linux kernel
Corpus path
fs/iomap/trace.h
Extension
.h
Size
9784 bytes
Lines
334
Domain
Core OS
Bucket
VFS And Filesystem Core
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#undef TRACE_SYSTEM
#define TRACE_SYSTEM iomap

#if !defined(_IOMAP_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _IOMAP_TRACE_H

#include <linux/tracepoint.h>

struct inode;

DECLARE_EVENT_CLASS(iomap_readpage_class,
	TP_PROTO(struct inode *inode, int nr_pages),
	TP_ARGS(inode, nr_pages),
	TP_STRUCT__entry(
		__field(dev_t, dev)
		__field(u64, ino)
		__field(int, nr_pages)
	),
	TP_fast_assign(
		__entry->dev = inode->i_sb->s_dev;
		__entry->ino = inode->i_ino;
		__entry->nr_pages = nr_pages;
	),
	TP_printk("dev %d:%d ino 0x%llx nr_pages %d",
		  MAJOR(__entry->dev), MINOR(__entry->dev),
		  __entry->ino,
		  __entry->nr_pages)
)

#define DEFINE_READPAGE_EVENT(name)		\
DEFINE_EVENT(iomap_readpage_class, name,	\
	TP_PROTO(struct inode *inode, int nr_pages), \
	TP_ARGS(inode, nr_pages))
DEFINE_READPAGE_EVENT(iomap_readpage);
DEFINE_READPAGE_EVENT(iomap_readahead);

DECLARE_EVENT_CLASS(iomap_range_class,
	TP_PROTO(struct inode *inode, loff_t off, u64 len),
	TP_ARGS(inode, off, len),
	TP_STRUCT__entry(
		__field(dev_t, dev)
		__field(u64, ino)
		__field(loff_t, size)
		__field(loff_t, offset)
		__field(u64, length)
	),
	TP_fast_assign(
		__entry->dev = inode->i_sb->s_dev;
		__entry->ino = inode->i_ino;
		__entry->size = i_size_read(inode);
		__entry->offset = off;
		__entry->length = len;
	),
	TP_printk("dev %d:%d ino 0x%llx size 0x%llx offset 0x%llx length 0x%llx",
		  MAJOR(__entry->dev), MINOR(__entry->dev),
		  __entry->ino,
		  __entry->size,
		  __entry->offset,
		  __entry->length)
)

#define DEFINE_RANGE_EVENT(name)		\
DEFINE_EVENT(iomap_range_class, name,	\
	TP_PROTO(struct inode *inode, loff_t off, u64 len),\
	TP_ARGS(inode, off, len))
DEFINE_RANGE_EVENT(iomap_writeback_folio);
DEFINE_RANGE_EVENT(iomap_release_folio);
DEFINE_RANGE_EVENT(iomap_invalidate_folio);
DEFINE_RANGE_EVENT(iomap_dio_invalidate_fail);
DEFINE_RANGE_EVENT(iomap_dio_rw_queued);
DEFINE_RANGE_EVENT(iomap_zero_iter);

#define IOMAP_TYPE_STRINGS \
	{ IOMAP_HOLE,		"HOLE" }, \
	{ IOMAP_DELALLOC,	"DELALLOC" }, \
	{ IOMAP_MAPPED,		"MAPPED" }, \
	{ IOMAP_UNWRITTEN,	"UNWRITTEN" }, \
	{ IOMAP_INLINE,		"INLINE" }

#define IOMAP_FLAGS_STRINGS \
	{ IOMAP_WRITE,		"WRITE" }, \
	{ IOMAP_ZERO,		"ZERO" }, \
	{ IOMAP_REPORT,		"REPORT" }, \
	{ IOMAP_FAULT,		"FAULT" }, \
	{ IOMAP_DIRECT,		"DIRECT" }, \
	{ IOMAP_NOWAIT,		"NOWAIT" }, \
	{ IOMAP_OVERWRITE_ONLY,	"OVERWRITE_ONLY" }, \
	{ IOMAP_UNSHARE,	"UNSHARE" }, \
	{ IOMAP_DAX,		"DAX" }, \
	{ IOMAP_ATOMIC,		"ATOMIC" }, \

Annotation

Implementation Notes