include/trace/events/f2fs.h

Source file repositories/reference/linux-study-clean/include/trace/events/f2fs.h

File Facts

System: Linux kernel
Corpus path: include/trace/events/f2fs.h
Extension: .h
Size: 65722 bytes
Lines: 2602
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.

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.
Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
Allocates kernel memory; connect allocation flags and lifetime to context constraints.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

linux/tracepoint.h
uapi/linux/f2fs.h
trace/define_trace.h

Detected Declarations

struct f2fs_sb_info
struct f2fs_io_info
struct extent_info
struct victim_sel_policy
struct f2fs_map_blocks
struct f2fs_iostat_latency

Annotated Snippet

struct f2fs_iostat_latency {
	unsigned int peak_lat;
	unsigned int avg_lat;
	unsigned int cnt;
};
#endif /* __F2FS_IOSTAT_LATENCY_TYPE */

TRACE_EVENT(f2fs_iostat_latency,

	TP_PROTO(struct f2fs_sb_info *sbi, struct f2fs_iostat_latency (*iostat_lat)[NR_PAGE_TYPE]),

	TP_ARGS(sbi, iostat_lat),

	TP_STRUCT__entry(
		__field(dev_t,	dev)
		__field(unsigned int,	d_rd_peak)
		__field(unsigned int,	d_rd_avg)
		__field(unsigned int,	d_rd_cnt)
		__field(unsigned int,	n_rd_peak)
		__field(unsigned int,	n_rd_avg)
		__field(unsigned int,	n_rd_cnt)
		__field(unsigned int,	m_rd_peak)
		__field(unsigned int,	m_rd_avg)
		__field(unsigned int,	m_rd_cnt)
		__field(unsigned int,	d_wr_s_peak)
		__field(unsigned int,	d_wr_s_avg)
		__field(unsigned int,	d_wr_s_cnt)
		__field(unsigned int,	n_wr_s_peak)
		__field(unsigned int,	n_wr_s_avg)
		__field(unsigned int,	n_wr_s_cnt)
		__field(unsigned int,	m_wr_s_peak)
		__field(unsigned int,	m_wr_s_avg)
		__field(unsigned int,	m_wr_s_cnt)
		__field(unsigned int,	d_wr_as_peak)
		__field(unsigned int,	d_wr_as_avg)
		__field(unsigned int,	d_wr_as_cnt)
		__field(unsigned int,	n_wr_as_peak)
		__field(unsigned int,	n_wr_as_avg)
		__field(unsigned int,	n_wr_as_cnt)
		__field(unsigned int,	m_wr_as_peak)
		__field(unsigned int,	m_wr_as_avg)
		__field(unsigned int,	m_wr_as_cnt)
	),

	TP_fast_assign(
		__entry->dev		= sbi->sb->s_dev;
		__entry->d_rd_peak	= iostat_lat[READ_IO][DATA].peak_lat;
		__entry->d_rd_avg	= iostat_lat[READ_IO][DATA].avg_lat;
		__entry->d_rd_cnt	= iostat_lat[READ_IO][DATA].cnt;
		__entry->n_rd_peak	= iostat_lat[READ_IO][NODE].peak_lat;
		__entry->n_rd_avg	= iostat_lat[READ_IO][NODE].avg_lat;
		__entry->n_rd_cnt	= iostat_lat[READ_IO][NODE].cnt;
		__entry->m_rd_peak	= iostat_lat[READ_IO][META].peak_lat;
		__entry->m_rd_avg	= iostat_lat[READ_IO][META].avg_lat;
		__entry->m_rd_cnt	= iostat_lat[READ_IO][META].cnt;
		__entry->d_wr_s_peak	= iostat_lat[WRITE_SYNC_IO][DATA].peak_lat;
		__entry->d_wr_s_avg	= iostat_lat[WRITE_SYNC_IO][DATA].avg_lat;
		__entry->d_wr_s_cnt	= iostat_lat[WRITE_SYNC_IO][DATA].cnt;
		__entry->n_wr_s_peak	= iostat_lat[WRITE_SYNC_IO][NODE].peak_lat;
		__entry->n_wr_s_avg	= iostat_lat[WRITE_SYNC_IO][NODE].avg_lat;
		__entry->n_wr_s_cnt	= iostat_lat[WRITE_SYNC_IO][NODE].cnt;
		__entry->m_wr_s_peak	= iostat_lat[WRITE_SYNC_IO][META].peak_lat;
		__entry->m_wr_s_avg	= iostat_lat[WRITE_SYNC_IO][META].avg_lat;
		__entry->m_wr_s_cnt	= iostat_lat[WRITE_SYNC_IO][META].cnt;
		__entry->d_wr_as_peak	= iostat_lat[WRITE_ASYNC_IO][DATA].peak_lat;
		__entry->d_wr_as_avg	= iostat_lat[WRITE_ASYNC_IO][DATA].avg_lat;
		__entry->d_wr_as_cnt	= iostat_lat[WRITE_ASYNC_IO][DATA].cnt;
		__entry->n_wr_as_peak	= iostat_lat[WRITE_ASYNC_IO][NODE].peak_lat;
		__entry->n_wr_as_avg	= iostat_lat[WRITE_ASYNC_IO][NODE].avg_lat;
		__entry->n_wr_as_cnt	= iostat_lat[WRITE_ASYNC_IO][NODE].cnt;
		__entry->m_wr_as_peak	= iostat_lat[WRITE_ASYNC_IO][META].peak_lat;
		__entry->m_wr_as_avg	= iostat_lat[WRITE_ASYNC_IO][META].avg_lat;
		__entry->m_wr_as_cnt	= iostat_lat[WRITE_ASYNC_IO][META].cnt;
	),

	TP_printk("dev = (%d,%d), "
		"iotype [peak lat.(ms)/avg lat.(ms)/count], "
		"rd_data [%u/%u/%u], rd_node [%u/%u/%u], rd_meta [%u/%u/%u], "
		"wr_sync_data [%u/%u/%u], wr_sync_node [%u/%u/%u], "
		"wr_sync_meta [%u/%u/%u], wr_async_data [%u/%u/%u], "
		"wr_async_node [%u/%u/%u], wr_async_meta [%u/%u/%u]",
		show_dev(__entry->dev),
		__entry->d_rd_peak, __entry->d_rd_avg, __entry->d_rd_cnt,
		__entry->n_rd_peak, __entry->n_rd_avg, __entry->n_rd_cnt,
		__entry->m_rd_peak, __entry->m_rd_avg, __entry->m_rd_cnt,
		__entry->d_wr_s_peak, __entry->d_wr_s_avg, __entry->d_wr_s_cnt,
		__entry->n_wr_s_peak, __entry->n_wr_s_avg, __entry->n_wr_s_cnt,
		__entry->m_wr_s_peak, __entry->m_wr_s_avg, __entry->m_wr_s_cnt,
		__entry->d_wr_as_peak, __entry->d_wr_as_avg, __entry->d_wr_as_cnt,
		__entry->n_wr_as_peak, __entry->n_wr_as_avg, __entry->n_wr_as_cnt,

Annotation

Immediate include surface: `linux/tracepoint.h`, `uapi/linux/f2fs.h`, `trace/define_trace.h`.
Detected declarations: `struct f2fs_sb_info`, `struct f2fs_io_info`, `struct extent_info`, `struct victim_sel_policy`, `struct f2fs_map_blocks`, `struct f2fs_iostat_latency`.
Atlas domain: Repository Root And Misc / include.
Implementation status: source implementation candidate.
Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.