include/trace/events/filemap.h

Source file repositories/reference/linux-study-clean/include/trace/events/filemap.h

File Facts

System
Linux kernel
Corpus path
include/trace/events/filemap.h
Extension
.h
Size
4629 bytes
Lines
203
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

#undef TRACE_SYSTEM
#define TRACE_SYSTEM filemap

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

#include <linux/types.h>
#include <linux/tracepoint.h>
#include <linux/mm.h>
#include <linux/memcontrol.h>
#include <linux/device.h>
#include <linux/kdev_t.h>
#include <linux/errseq.h>

DECLARE_EVENT_CLASS(mm_filemap_op_page_cache,

	TP_PROTO(struct folio *folio),

	TP_ARGS(folio),

	TP_STRUCT__entry(
		__field(u64, i_ino)
		__field(unsigned long, pfn)
		__field(unsigned long, index)
		__field(dev_t, s_dev)
		__field(unsigned char, order)
	),

	TP_fast_assign(
		__entry->pfn = folio_pfn(folio);
		__entry->i_ino = folio->mapping->host->i_ino;
		__entry->index = folio->index;
		if (folio->mapping->host->i_sb)
			__entry->s_dev = folio->mapping->host->i_sb->s_dev;
		else
			__entry->s_dev = folio->mapping->host->i_rdev;
		__entry->order = folio_order(folio);
	),

	TP_printk("dev %d:%d ino %llx pfn=0x%lx ofs=%lu order=%u",
		MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
		__entry->i_ino,
		__entry->pfn,
		__entry->index << PAGE_SHIFT,
		__entry->order)
);

DEFINE_EVENT(mm_filemap_op_page_cache, mm_filemap_delete_from_page_cache,
	TP_PROTO(struct folio *folio),
	TP_ARGS(folio)
	);

DEFINE_EVENT(mm_filemap_op_page_cache, mm_filemap_add_to_page_cache,
	TP_PROTO(struct folio *folio),
	TP_ARGS(folio)
	);

DECLARE_EVENT_CLASS(mm_filemap_op_page_cache_range,

	TP_PROTO(
		struct address_space *mapping,
		pgoff_t index,
		pgoff_t last_index
	),

	TP_ARGS(mapping, index, last_index),

	TP_STRUCT__entry(
		__field(u64, i_ino)
		__field(dev_t, s_dev)
		__field(unsigned long, index)
		__field(unsigned long, last_index)
	),

	TP_fast_assign(
		__entry->i_ino = mapping->host->i_ino;
		if (mapping->host->i_sb)
			__entry->s_dev =
				mapping->host->i_sb->s_dev;
		else
			__entry->s_dev = mapping->host->i_rdev;
		__entry->index = index;
		__entry->last_index = last_index;
	),

	TP_printk(
		"dev=%d:%d ino=%llx ofs=%lld-%lld",
		MAJOR(__entry->s_dev),
		MINOR(__entry->s_dev), __entry->i_ino,
		((loff_t)__entry->index) << PAGE_SHIFT,

Annotation

Implementation Notes