linux/include/trace/events/migrate.h

/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM …

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

#include <linux/tracepoint.h>

#define MIGRATE_MODE …


#define MIGRATE_REASON …

/*
 * 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) …
#define EMe(a, b) …

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) …
#define EMe(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))
);

TRACE_EVENT(mm_migrate_pages_start,

	TP_PROTO(enum migrate_mode mode, int reason),

	TP_ARGS(mode, reason),

	TP_STRUCT__entry(
		__field(enum migrate_mode, mode)
		__field(int, reason)
	),

	TP_fast_assign(
		__entry->mode	= mode;
		__entry->reason	= reason;
	),

	TP_printk("mode=%s reason=%s",
		  __print_symbolic(__entry->mode, MIGRATE_MODE),
		  __print_symbolic(__entry->reason, MIGRATE_REASON))
);

DECLARE_EVENT_CLASS(migration_pte,

		TP_PROTO(unsigned long addr, unsigned long pte, int order),

		TP_ARGS(addr, pte, order),

		TP_STRUCT__entry(
			__field(unsigned long, addr)
			__field(unsigned long, pte)
			__field(int, order)
		),

		TP_fast_assign(
			__entry->addr = addr;
			__entry->pte = pte;
			__entry->order = order;
		),

		TP_printk("addr=%lx, pte=%lx order=%d", __entry->addr, __entry->pte, __entry->order)
);

DEFINE_EVENT(migration_pte, set_migration_pte,
	TP_PROTO(unsigned long addr, unsigned long pte, int order),
	TP_ARGS(addr, pte, order)
);

DEFINE_EVENT(migration_pte, remove_migration_pte,
	TP_PROTO(unsigned long addr, unsigned long pte, int order),
	TP_ARGS(addr, pte, order)
);

#endif /* _TRACE_MIGRATE_H */

/* This part must be outside protection */
#include <trace/define_trace.h>