include/trace/events/migrate.h

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

File Facts

System
Linux kernel
Corpus path
include/trace/events/migrate.h
Extension
.h
Size
3830 bytes
Lines
148
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 migrate

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

#include <linux/tracepoint.h>

#define MIGRATE_MODE						\
	EM( MIGRATE_ASYNC,	"MIGRATE_ASYNC")		\
	EM( MIGRATE_SYNC_LIGHT,	"MIGRATE_SYNC_LIGHT")		\
	EMe(MIGRATE_SYNC,	"MIGRATE_SYNC")


#define MIGRATE_REASON						\
	EM( MR_COMPACTION,	"compaction")			\
	EM( MR_MEMORY_FAILURE,	"memory_failure")		\
	EM( MR_MEMORY_HOTPLUG,	"memory_hotplug")		\
	EM( MR_SYSCALL,		"syscall_or_cpuset")		\
	EM( MR_MEMPOLICY_MBIND,	"mempolicy_mbind")		\
	EM( MR_NUMA_MISPLACED,	"numa_misplaced")		\
	EM( MR_CONTIG_RANGE,	"contig_range")			\
	EM( MR_LONGTERM_PIN,	"longterm_pin")			\
	EM( MR_DEMOTION,	"demotion")			\
	EMe(MR_DAMON,		"damon")

/*
 * First define the enums in the above macros to be exported to userspace
 * via TRACE_DEFINE_ENUM().
 */
#undef EM
#undef EMe
#define EM(a, b)	TRACE_DEFINE_ENUM(a);
#define EMe(a, b)	TRACE_DEFINE_ENUM(a);

MIGRATE_MODE
MIGRATE_REASON

/*
 * Now redefine the EM() and EMe() macros to map the enums to the strings
 * that will be printed in the output.
 */
#undef EM
#undef EMe
#define EM(a, b)	{a, b},
#define EMe(a, b)	{a, b}

TRACE_EVENT(mm_migrate_pages,

	TP_PROTO(unsigned long succeeded, unsigned long failed,
		 unsigned long thp_succeeded, unsigned long thp_failed,
		 unsigned long thp_split, unsigned long large_folio_split,
		 enum migrate_mode mode, int reason),

	TP_ARGS(succeeded, failed, thp_succeeded, thp_failed,
		thp_split, large_folio_split, mode, reason),

	TP_STRUCT__entry(
		__field(	unsigned long,		succeeded)
		__field(	unsigned long,		failed)
		__field(	unsigned long,		thp_succeeded)
		__field(	unsigned long,		thp_failed)
		__field(	unsigned long,		thp_split)
		__field(	unsigned long,		large_folio_split)
		__field(	enum migrate_mode,	mode)
		__field(	int,			reason)
	),

	TP_fast_assign(
		__entry->succeeded			= succeeded;
		__entry->failed				= failed;
		__entry->thp_succeeded		= thp_succeeded;
		__entry->thp_failed			= thp_failed;
		__entry->thp_split			= thp_split;
		__entry->large_folio_split	= large_folio_split;
		__entry->mode				= mode;
		__entry->reason				= reason;
	),

	TP_printk("nr_succeeded=%lu nr_failed=%lu nr_thp_succeeded=%lu nr_thp_failed=%lu nr_thp_split=%lu nr_split=%lu mode=%s reason=%s",
		__entry->succeeded,
		__entry->failed,
		__entry->thp_succeeded,
		__entry->thp_failed,
		__entry->thp_split,
		__entry->large_folio_split,
		__print_symbolic(__entry->mode, MIGRATE_MODE),
		__print_symbolic(__entry->reason, MIGRATE_REASON))
);

Annotation

Implementation Notes