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/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/node.h>
#include <linux/mmzone.h>
#include <linux/compaction.h>
/*
 * The order of these masks is important. Matching masks will be seen
 * first and the left over flags will end up showing by themselves.
 *
 * For example, if we have GFP_KERNEL before GFP_USER we wil get:
 *
 *  GFP_KERNEL|GFP_HARDWALL
 *
 * Thus most bits set go first.
 */

#define __def_gfpflag_names						\
	{(unsigned long)GFP_TRANSHUGE,		"GFP_TRANSHUGE"},	\
	{(unsigned long)GFP_TRANSHUGE_LIGHT,	"GFP_TRANSHUGE_LIGHT"}, \
	{(unsigned long)GFP_HIGHUSER_MOVABLE,	"GFP_HIGHUSER_MOVABLE"},\
	{(unsigned long)GFP_HIGHUSER,		"GFP_HIGHUSER"},	\
	{(unsigned long)GFP_USER,		"GFP_USER"},		\
	{(unsigned long)GFP_KERNEL_ACCOUNT,	"GFP_KERNEL_ACCOUNT"},	\
	{(unsigned long)GFP_KERNEL,		"GFP_KERNEL"},		\
	{(unsigned long)GFP_NOFS,		"GFP_NOFS"},		\
	{(unsigned long)GFP_ATOMIC,		"GFP_ATOMIC"},		\
	{(unsigned long)GFP_NOIO,		"GFP_NOIO"},		\
	{(unsigned long)GFP_NOWAIT,		"GFP_NOWAIT"},		\
	{(unsigned long)GFP_DMA,		"GFP_DMA"},		\
	{(unsigned long)__GFP_HIGHMEM,		"__GFP_HIGHMEM"},	\
	{(unsigned long)GFP_DMA32,		"GFP_DMA32"},		\
	{(unsigned long)__GFP_HIGH,		"__GFP_HIGH"},		\
	{(unsigned long)__GFP_ATOMIC,		"__GFP_ATOMIC"},	\
	{(unsigned long)__GFP_IO,		"__GFP_IO"},		\
	{(unsigned long)__GFP_FS,		"__GFP_FS"},		\
	{(unsigned long)__GFP_NOWARN,		"__GFP_NOWARN"},	\
	{(unsigned long)__GFP_RETRY_MAYFAIL,	"__GFP_RETRY_MAYFAIL"},	\
	{(unsigned long)__GFP_NOFAIL,		"__GFP_NOFAIL"},	\
	{(unsigned long)__GFP_NORETRY,		"__GFP_NORETRY"},	\
	{(unsigned long)__GFP_COMP,		"__GFP_COMP"},		\
	{(unsigned long)__GFP_ZERO,		"__GFP_ZERO"},		\
	{(unsigned long)__GFP_NOMEMALLOC,	"__GFP_NOMEMALLOC"},	\
	{(unsigned long)__GFP_MEMALLOC,		"__GFP_MEMALLOC"},	\
	{(unsigned long)__GFP_HARDWALL,		"__GFP_HARDWALL"},	\
	{(unsigned long)__GFP_THISNODE,		"__GFP_THISNODE"},	\
	{(unsigned long)__GFP_RECLAIMABLE,	"__GFP_RECLAIMABLE"},	\
	{(unsigned long)__GFP_MOVABLE,		"__GFP_MOVABLE"},	\
	{(unsigned long)__GFP_ACCOUNT,		"__GFP_ACCOUNT"},	\
	{(unsigned long)__GFP_WRITE,		"__GFP_WRITE"},		\
	{(unsigned long)__GFP_RECLAIM,		"__GFP_RECLAIM"},	\
	{(unsigned long)__GFP_DIRECT_RECLAIM,	"__GFP_DIRECT_RECLAIM"},\
	{(unsigned long)__GFP_KSWAPD_RECLAIM,	"__GFP_KSWAPD_RECLAIM"},\
	{(unsigned long)__GFP_ZEROTAGS,		"__GFP_ZEROTAGS"},	\
	{(unsigned long)__GFP_SKIP_KASAN_POISON,"__GFP_SKIP_KASAN_POISON"}\

#define show_gfp_flags(flags)						\
	(flags) ? __print_flags(flags, "|",				\
	__def_gfpflag_names						\
	) : "none"

#ifdef CONFIG_MMU
#define IF_HAVE_PG_MLOCK(flag,string) ,{1UL << flag, string}
#else
#define IF_HAVE_PG_MLOCK(flag,string)
#endif

#ifdef CONFIG_ARCH_USES_PG_UNCACHED
#define IF_HAVE_PG_UNCACHED(flag,string) ,{1UL << flag, string}
#else
#define IF_HAVE_PG_UNCACHED(flag,string)
#endif

#ifdef CONFIG_MEMORY_FAILURE
#define IF_HAVE_PG_HWPOISON(flag,string) ,{1UL << flag, string}
#else
#define IF_HAVE_PG_HWPOISON(flag,string)
#endif

#if defined(CONFIG_PAGE_IDLE_FLAG) && defined(CONFIG_64BIT)
#define IF_HAVE_PG_IDLE(flag,string) ,{1UL << flag, string}
#else
#define IF_HAVE_PG_IDLE(flag,string)
#endif

#ifdef CONFIG_64BIT
#define IF_HAVE_PG_ARCH_2(flag,string) ,{1UL << flag, string}
#else
#define IF_HAVE_PG_ARCH_2(flag,string)
#endif

#ifdef CONFIG_KASAN_HW_TAGS
#define IF_HAVE_PG_SKIP_KASAN_POISON(flag,string) ,{1UL << flag, string}
#else
#define IF_HAVE_PG_SKIP_KASAN_POISON(flag,string)
#endif

#define __def_pageflag_names						\
	{1UL << PG_locked,		"locked"	},		\
	{1UL << PG_waiters,		"waiters"	},		\
	{1UL << PG_error,		"error"		},		\
	{1UL << PG_referenced,		"referenced"	},		\
	{1UL << PG_uptodate,		"uptodate"	},		\
	{1UL << PG_dirty,		"dirty"		},		\
	{1UL << PG_lru,			"lru"		},		\
	{1UL << PG_active,		"active"	},		\
	{1UL << PG_workingset,		"workingset"	},		\
	{1UL << PG_slab,		"slab"		},		\
	{1UL << PG_owner_priv_1,	"owner_priv_1"	},		\
	{1UL << PG_arch_1,		"arch_1"	},		\
	{1UL << PG_reserved,		"reserved"	},		\
	{1UL << PG_private,		"private"	},		\
	{1UL << PG_private_2,		"private_2"	},		\
	{1UL << PG_writeback,		"writeback"	},		\
	{1UL << PG_head,		"head"		},		\
	{1UL << PG_mappedtodisk,	"mappedtodisk"	},		\
	{1UL << PG_reclaim,		"reclaim"	},		\
	{1UL << PG_swapbacked,		"swapbacked"	},		\
	{1UL << PG_unevictable,		"unevictable"	}		\
IF_HAVE_PG_MLOCK(PG_mlocked,		"mlocked"	)		\
IF_HAVE_PG_UNCACHED(PG_uncached,	"uncached"	)		\
IF_HAVE_PG_HWPOISON(PG_hwpoison,	"hwpoison"	)		\
IF_HAVE_PG_IDLE(PG_young,		"young"		)		\
IF_HAVE_PG_IDLE(PG_idle,		"idle"		)		\
IF_HAVE_PG_ARCH_2(PG_arch_2,		"arch_2"	)		\
IF_HAVE_PG_SKIP_KASAN_POISON(PG_skip_kasan_poison, "skip_kasan_poison")

#define show_page_flags(flags)						\
	(flags) ? __print_flags(flags, "|",				\
	__def_pageflag_names						\
	) : "none"

#if defined(CONFIG_X86)
#define __VM_ARCH_SPECIFIC_1 {VM_PAT,     "pat"           }
#elif defined(CONFIG_PPC)
#define __VM_ARCH_SPECIFIC_1 {VM_SAO,     "sao"           }
#elif defined(CONFIG_PARISC) || defined(CONFIG_IA64)
#define __VM_ARCH_SPECIFIC_1 {VM_GROWSUP,	"growsup"	}
#elif !defined(CONFIG_MMU)
#define __VM_ARCH_SPECIFIC_1 {VM_MAPPED_COPY,"mappedcopy"	}
#else
#define __VM_ARCH_SPECIFIC_1 {VM_ARCH_1,	"arch_1"	}
#endif

#ifdef CONFIG_MEM_SOFT_DIRTY
#define IF_HAVE_VM_SOFTDIRTY(flag,name) {flag, name },
#else
#define IF_HAVE_VM_SOFTDIRTY(flag,name)
#endif

#ifdef CONFIG_HAVE_ARCH_USERFAULTFD_MINOR
# define IF_HAVE_UFFD_MINOR(flag, name) {flag, name},
#else
# define IF_HAVE_UFFD_MINOR(flag, name)
#endif

#define __def_vmaflag_names						\
	{VM_READ,			"read"		},		\
	{VM_WRITE,			"write"		},		\
	{VM_EXEC,			"exec"		},		\
	{VM_SHARED,			"shared"	},		\
	{VM_MAYREAD,			"mayread"	},		\
	{VM_MAYWRITE,			"maywrite"	},		\
	{VM_MAYEXEC,			"mayexec"	},		\
	{VM_MAYSHARE,			"mayshare"	},		\
	{VM_GROWSDOWN,			"growsdown"	},		\
	{VM_UFFD_MISSING,		"uffd_missing"	},		\
IF_HAVE_UFFD_MINOR(VM_UFFD_MINOR,	"uffd_minor"	)		\
	{VM_PFNMAP,			"pfnmap"	},		\
	{VM_UFFD_WP,			"uffd_wp"	},		\
	{VM_LOCKED,			"locked"	},		\
	{VM_IO,				"io"		},		\
	{VM_SEQ_READ,			"seqread"	},		\
	{VM_RAND_READ,			"randread"	},		\
	{VM_DONTCOPY,			"dontcopy"	},		\
	{VM_DONTEXPAND,			"dontexpand"	},		\
	{VM_LOCKONFAULT,		"lockonfault"	},		\
	{VM_ACCOUNT,			"account"	},		\
	{VM_NORESERVE,			"noreserve"	},		\
	{VM_HUGETLB,			"hugetlb"	},		\
	{VM_SYNC,			"sync"		},		\
	__VM_ARCH_SPECIFIC_1				,		\
	{VM_WIPEONFORK,			"wipeonfork"	},		\
	{VM_DONTDUMP,			"dontdump"	},		\
IF_HAVE_VM_SOFTDIRTY(VM_SOFTDIRTY,	"softdirty"	)		\
	{VM_MIXEDMAP,			"mixedmap"	},		\
	{VM_HUGEPAGE,			"hugepage"	},		\
	{VM_NOHUGEPAGE,			"nohugepage"	},		\
	{VM_MERGEABLE,			"mergeable"	}		\

#define show_vma_flags(flags)						\
	(flags) ? __print_flags(flags, "|",				\
	__def_vmaflag_names						\
	) : "none"

#ifdef CONFIG_COMPACTION
#define COMPACTION_STATUS					\
	EM( COMPACT_SKIPPED,		"skipped")		\
	EM( COMPACT_DEFERRED,		"deferred")		\
	EM( COMPACT_CONTINUE,		"continue")		\
	EM( COMPACT_SUCCESS,		"success")		\
	EM( COMPACT_PARTIAL_SKIPPED,	"partial_skipped")	\
	EM( COMPACT_COMPLETE,		"complete")		\
	EM( COMPACT_NO_SUITABLE_PAGE,	"no_suitable_page")	\
	EM( COMPACT_NOT_SUITABLE_ZONE,	"not_suitable_zone")	\
	EMe(COMPACT_CONTENDED,		"contended")

/* High-level compaction status feedback */
#define COMPACTION_FAILED	1
#define COMPACTION_WITHDRAWN	2
#define COMPACTION_PROGRESS	3

#define compact_result_to_feedback(result)	\
({						\
	enum compact_result __result = result;	\
	(compaction_failed(__result)) ? COMPACTION_FAILED : \
		(compaction_withdrawn(__result)) ? COMPACTION_WITHDRAWN : COMPACTION_PROGRESS; \
})

#define COMPACTION_FEEDBACK		\
	EM(COMPACTION_FAILED,		"failed")	\
	EM(COMPACTION_WITHDRAWN,	"withdrawn")	\
	EMe(COMPACTION_PROGRESS,	"progress")

#define COMPACTION_PRIORITY						\
	EM(COMPACT_PRIO_SYNC_FULL,	"COMPACT_PRIO_SYNC_FULL")	\
	EM(COMPACT_PRIO_SYNC_LIGHT,	"COMPACT_PRIO_SYNC_LIGHT")	\
	EMe(COMPACT_PRIO_ASYNC,		"COMPACT_PRIO_ASYNC")
#else
#define COMPACTION_STATUS
#define COMPACTION_PRIORITY
#define COMPACTION_FEEDBACK
#endif

#ifdef CONFIG_ZONE_DMA
#define IFDEF_ZONE_DMA(X) X
#else
#define IFDEF_ZONE_DMA(X)
#endif

#ifdef CONFIG_ZONE_DMA32
#define IFDEF_ZONE_DMA32(X) X
#else
#define IFDEF_ZONE_DMA32(X)
#endif

#ifdef CONFIG_HIGHMEM
#define IFDEF_ZONE_HIGHMEM(X) X
#else
#define IFDEF_ZONE_HIGHMEM(X)
#endif

#define ZONE_TYPE						\
	IFDEF_ZONE_DMA(		EM (ZONE_DMA,	 "DMA"))	\
	IFDEF_ZONE_DMA32(	EM (ZONE_DMA32,	 "DMA32"))	\
				EM (ZONE_NORMAL, "Normal")	\
	IFDEF_ZONE_HIGHMEM(	EM (ZONE_HIGHMEM,"HighMem"))	\
				EMe(ZONE_MOVABLE,"Movable")

#define LRU_NAMES		\
		EM (LRU_INACTIVE_ANON, "inactive_anon") \
		EM (LRU_ACTIVE_ANON, "active_anon") \
		EM (LRU_INACTIVE_FILE, "inactive_file") \
		EM (LRU_ACTIVE_FILE, "active_file") \
		EMe(LRU_UNEVICTABLE, "unevictable")

/*
 * 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);

COMPACTION_STATUS
COMPACTION_PRIORITY
/* COMPACTION_FEEDBACK are defines not enums. Not needed here. */
ZONE_TYPE
LRU_NAMES

/*
 * 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}

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