tools/vm: rename tools/vm to tools/mm

Rename tools/vm to tools/mm for being more consistent with the code and
documentation directories, and won't be confused with virtual machines.

Link: https://lkml.kernel.org/r/20230103180754.129637-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

6 files changed, 0 insertions, 4141 deletions

diff --git a/tools/vm/.gitignore b/tools/vm/.gitignore
deleted file mode 100644
index 922879f93fc8..000000000000
--- a/tools/vm/.gitignore
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-slabinfo
-page-types
-page_owner_sort
diff --git a/tools/vm/Makefile b/tools/vm/Makefile
deleted file mode 100644
index 9860622cbb15..000000000000
--- a/tools/vm/Makefile
+++ /dev/null
@@ -1,32 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-# Makefile for vm tools
-#
-include ../scripts/Makefile.include
-
-TARGETS=page-types slabinfo page_owner_sort
-
-LIB_DIR = ../lib/api
-LIBS = $(LIB_DIR)/libapi.a
-
-CFLAGS = -Wall -Wextra -I../lib/
-LDFLAGS = $(LIBS)
-
-all: $(TARGETS)
-
-$(TARGETS): $(LIBS)
-
-$(LIBS):
-	make -C $(LIB_DIR)
-
-%: %.c
-	$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
-
-clean:
-	$(RM) page-types slabinfo page_owner_sort
-	make -C $(LIB_DIR) clean
-
-sbindir ?= /usr/sbin
-
-install: all
-	install -d $(DESTDIR)$(sbindir)
-	install -m 755 -p $(TARGETS) $(DESTDIR)$(sbindir)
diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c
deleted file mode 100644
index 381dcc00cb62..000000000000
--- a/tools/vm/page-types.c
+++ /dev/null
@@ -1,1396 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * page-types: Tool for querying page flags
- *
- * Copyright (C) 2009 Intel corporation
- *
- * Authors: Wu Fengguang <fengguang.wu@intel.com>
- */
-
-#define _FILE_OFFSET_BITS 64
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <stdarg.h>
-#include <string.h>
-#include <getopt.h>
-#include <limits.h>
-#include <assert.h>
-#include <ftw.h>
-#include <time.h>
-#include <setjmp.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/errno.h>
-#include <sys/fcntl.h>
-#include <sys/mount.h>
-#include <sys/statfs.h>
-#include <sys/mman.h>
-#include "../../include/uapi/linux/magic.h"
-#include "../../include/uapi/linux/kernel-page-flags.h"
-#include <api/fs/fs.h>
-
-#ifndef MAX_PATH
-# define MAX_PATH 256
-#endif
-
-#ifndef STR
-# define _STR(x) #x
-# define STR(x) _STR(x)
-#endif
-
-/*
- * pagemap kernel ABI bits
- */
-
-#define PM_ENTRY_BYTES		8
-#define PM_PFRAME_BITS		55
-#define PM_PFRAME_MASK		((1LL << PM_PFRAME_BITS) - 1)
-#define PM_PFRAME(x)		((x) & PM_PFRAME_MASK)
-#define MAX_SWAPFILES_SHIFT	5
-#define PM_SWAP_OFFSET(x)	(((x) & PM_PFRAME_MASK) >> MAX_SWAPFILES_SHIFT)
-#define PM_SOFT_DIRTY		(1ULL << 55)
-#define PM_MMAP_EXCLUSIVE	(1ULL << 56)
-#define PM_FILE			(1ULL << 61)
-#define PM_SWAP			(1ULL << 62)
-#define PM_PRESENT		(1ULL << 63)
-
-/*
- * kernel page flags
- */
-
-#define KPF_BYTES		8
-#define PROC_KPAGEFLAGS		"/proc/kpageflags"
-#define PROC_KPAGECOUNT		"/proc/kpagecount"
-#define PROC_KPAGECGROUP	"/proc/kpagecgroup"
-
-#define SYS_KERNEL_MM_PAGE_IDLE "/sys/kernel/mm/page_idle/bitmap"
-
-/* [32-] kernel hacking assistances */
-#define KPF_RESERVED		32
-#define KPF_MLOCKED		33
-#define KPF_MAPPEDTODISK	34
-#define KPF_PRIVATE		35
-#define KPF_PRIVATE_2		36
-#define KPF_OWNER_PRIVATE	37
-#define KPF_ARCH		38
-#define KPF_UNCACHED		39
-#define KPF_SOFTDIRTY		40
-#define KPF_ARCH_2		41
-
-/* [47-] take some arbitrary free slots for expanding overloaded flags
- * not part of kernel API
- */
-#define KPF_ANON_EXCLUSIVE	47
-#define KPF_READAHEAD		48
-#define KPF_SLOB_FREE		49
-#define KPF_SLUB_FROZEN		50
-#define KPF_SLUB_DEBUG		51
-#define KPF_FILE		61
-#define KPF_SWAP		62
-#define KPF_MMAP_EXCLUSIVE	63
-
-#define KPF_ALL_BITS		((uint64_t)~0ULL)
-#define KPF_HACKERS_BITS	(0xffffULL << 32)
-#define KPF_OVERLOADED_BITS	(0xffffULL << 48)
-#define BIT(name)		(1ULL << KPF_##name)
-#define BITS_COMPOUND		(BIT(COMPOUND_HEAD) | BIT(COMPOUND_TAIL))
-
-static const char * const page_flag_names[] = {
-	[KPF_LOCKED]		= "L:locked",
-	[KPF_ERROR]		= "E:error",
-	[KPF_REFERENCED]	= "R:referenced",
-	[KPF_UPTODATE]		= "U:uptodate",
-	[KPF_DIRTY]		= "D:dirty",
-	[KPF_LRU]		= "l:lru",
-	[KPF_ACTIVE]		= "A:active",
-	[KPF_SLAB]		= "S:slab",
-	[KPF_WRITEBACK]		= "W:writeback",
-	[KPF_RECLAIM]		= "I:reclaim",
-	[KPF_BUDDY]		= "B:buddy",
-
-	[KPF_MMAP]		= "M:mmap",
-	[KPF_ANON]		= "a:anonymous",
-	[KPF_SWAPCACHE]		= "s:swapcache",
-	[KPF_SWAPBACKED]	= "b:swapbacked",
-	[KPF_COMPOUND_HEAD]	= "H:compound_head",
-	[KPF_COMPOUND_TAIL]	= "T:compound_tail",
-	[KPF_HUGE]		= "G:huge",
-	[KPF_UNEVICTABLE]	= "u:unevictable",
-	[KPF_HWPOISON]		= "X:hwpoison",
-	[KPF_NOPAGE]		= "n:nopage",
-	[KPF_KSM]		= "x:ksm",
-	[KPF_THP]		= "t:thp",
-	[KPF_OFFLINE]		= "o:offline",
-	[KPF_PGTABLE]		= "g:pgtable",
-	[KPF_ZERO_PAGE]		= "z:zero_page",
-	[KPF_IDLE]              = "i:idle_page",
-
-	[KPF_RESERVED]		= "r:reserved",
-	[KPF_MLOCKED]		= "m:mlocked",
-	[KPF_MAPPEDTODISK]	= "d:mappedtodisk",
-	[KPF_PRIVATE]		= "P:private",
-	[KPF_PRIVATE_2]		= "p:private_2",
-	[KPF_OWNER_PRIVATE]	= "O:owner_private",
-	[KPF_ARCH]		= "h:arch",
-	[KPF_UNCACHED]		= "c:uncached",
-	[KPF_SOFTDIRTY]		= "f:softdirty",
-	[KPF_ARCH_2]		= "H:arch_2",
-
-	[KPF_ANON_EXCLUSIVE]	= "d:anon_exclusive",
-	[KPF_READAHEAD]		= "I:readahead",
-	[KPF_SLOB_FREE]		= "P:slob_free",
-	[KPF_SLUB_FROZEN]	= "A:slub_frozen",
-	[KPF_SLUB_DEBUG]	= "E:slub_debug",
-
-	[KPF_FILE]		= "F:file",
-	[KPF_SWAP]		= "w:swap",
-	[KPF_MMAP_EXCLUSIVE]	= "1:mmap_exclusive",
-};
-
-
-/*
- * data structures
- */
-
-static int		opt_raw;	/* for kernel developers */
-static int		opt_list;	/* list pages (in ranges) */
-static int		opt_mark_idle;	/* set accessed bit */
-static int		opt_no_summary;	/* don't show summary */
-static pid_t		opt_pid;	/* process to walk */
-const char		*opt_file;	/* file or directory path */
-static uint64_t		opt_cgroup;	/* cgroup inode */
-static int		opt_list_cgroup;/* list page cgroup */
-static int		opt_list_mapcnt;/* list page map count */
-static const char	*opt_kpageflags;/* kpageflags file to parse */
-
-#define MAX_ADDR_RANGES	1024
-static int		nr_addr_ranges;
-static unsigned long	opt_offset[MAX_ADDR_RANGES];
-static unsigned long	opt_size[MAX_ADDR_RANGES];
-
-#define MAX_VMAS	10240
-static int		nr_vmas;
-static unsigned long	pg_start[MAX_VMAS];
-static unsigned long	pg_end[MAX_VMAS];
-
-#define MAX_BIT_FILTERS	64
-static int		nr_bit_filters;
-static uint64_t		opt_mask[MAX_BIT_FILTERS];
-static uint64_t		opt_bits[MAX_BIT_FILTERS];
-
-static int		page_size;
-
-static int		pagemap_fd;
-static int		kpageflags_fd;
-static int		kpagecount_fd = -1;
-static int		kpagecgroup_fd = -1;
-static int		page_idle_fd = -1;
-
-static int		opt_hwpoison;
-static int		opt_unpoison;
-
-static const char	*hwpoison_debug_fs;
-static int		hwpoison_inject_fd;
-static int		hwpoison_forget_fd;
-
-#define HASH_SHIFT	13
-#define HASH_SIZE	(1 << HASH_SHIFT)
-#define HASH_MASK	(HASH_SIZE - 1)
-#define HASH_KEY(flags)	(flags & HASH_MASK)
-
-static unsigned long	total_pages;
-static unsigned long	nr_pages[HASH_SIZE];
-static uint64_t		page_flags[HASH_SIZE];
-
-
-/*
- * helper functions
- */
-
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-
-#define min_t(type, x, y) ({			\
-	type __min1 = (x);			\
-	type __min2 = (y);			\
-	__min1 < __min2 ? __min1 : __min2; })
-
-#define max_t(type, x, y) ({			\
-	type __max1 = (x);			\
-	type __max2 = (y);			\
-	__max1 > __max2 ? __max1 : __max2; })
-
-static unsigned long pages2mb(unsigned long pages)
-{
-	return (pages * page_size) >> 20;
-}
-
-static void fatal(const char *x, ...)
-{
-	va_list ap;
-
-	va_start(ap, x);
-	vfprintf(stderr, x, ap);
-	va_end(ap);
-	exit(EXIT_FAILURE);
-}
-
-static int checked_open(const char *pathname, int flags)
-{
-	int fd = open(pathname, flags);
-
-	if (fd < 0) {
-		perror(pathname);
-		exit(EXIT_FAILURE);
-	}
-
-	return fd;
-}
-
-/*
- * pagemap/kpageflags routines
- */
-
-static unsigned long do_u64_read(int fd, const char *name,
-				 uint64_t *buf,
-				 unsigned long index,
-				 unsigned long count)
-{
-	long bytes;
-
-	if (index > ULONG_MAX / 8)
-		fatal("index overflow: %lu\n", index);
-
-	bytes = pread(fd, buf, count * 8, (off_t)index * 8);
-	if (bytes < 0) {
-		perror(name);
-		exit(EXIT_FAILURE);
-	}
-	if (bytes % 8)
-		fatal("partial read: %lu bytes\n", bytes);
-
-	return bytes / 8;
-}
-
-static unsigned long kpageflags_read(uint64_t *buf,
-				     unsigned long index,
-				     unsigned long pages)
-{
-	return do_u64_read(kpageflags_fd, opt_kpageflags, buf, index, pages);
-}
-
-static unsigned long kpagecgroup_read(uint64_t *buf,
-				      unsigned long index,
-				      unsigned long pages)
-{
-	if (kpagecgroup_fd < 0)
-		return pages;
-
-	return do_u64_read(kpagecgroup_fd, opt_kpageflags, buf, index, pages);
-}
-
-static unsigned long kpagecount_read(uint64_t *buf,
-				     unsigned long index,
-				     unsigned long pages)
-{
-	return kpagecount_fd < 0 ? pages :
-		do_u64_read(kpagecount_fd, PROC_KPAGECOUNT,
-			    buf, index, pages);
-}
-
-static unsigned long pagemap_read(uint64_t *buf,
-				  unsigned long index,
-				  unsigned long pages)
-{
-	return do_u64_read(pagemap_fd, "/proc/pid/pagemap", buf, index, pages);
-}
-
-static unsigned long pagemap_pfn(uint64_t val)
-{
-	unsigned long pfn;
-
-	if (val & PM_PRESENT)
-		pfn = PM_PFRAME(val);
-	else
-		pfn = 0;
-
-	return pfn;
-}
-
-static unsigned long pagemap_swap_offset(uint64_t val)
-{
-	return val & PM_SWAP ? PM_SWAP_OFFSET(val) : 0;
-}
-
-/*
- * page flag names
- */
-
-static char *page_flag_name(uint64_t flags)
-{
-	static char buf[65];
-	int present;
-	size_t i, j;
-
-	for (i = 0, j = 0; i < ARRAY_SIZE(page_flag_names); i++) {
-		present = (flags >> i) & 1;
-		if (!page_flag_names[i]) {
-			if (present)
-				fatal("unknown flag bit %d\n", i);
-			continue;
-		}
-		buf[j++] = present ? page_flag_names[i][0] : '_';
-	}
-
-	return buf;
-}
-
-static char *page_flag_longname(uint64_t flags)
-{
-	static char buf[1024];
-	size_t i, n;
-
-	for (i = 0, n = 0; i < ARRAY_SIZE(page_flag_names); i++) {
-		if (!page_flag_names[i])
-			continue;
-		if ((flags >> i) & 1)
-			n += snprintf(buf + n, sizeof(buf) - n, "%s,",
-					page_flag_names[i] + 2);
-	}
-	if (n)
-		n--;
-	buf[n] = '\0';
-
-	return buf;
-}
-
-
-/*
- * page list and summary
- */
-
-static void show_page_range(unsigned long voffset, unsigned long offset,
-			    unsigned long size, uint64_t flags,
-			    uint64_t cgroup, uint64_t mapcnt)
-{
-	static uint64_t      flags0;
-	static uint64_t	     cgroup0;
-	static uint64_t      mapcnt0;
-	static unsigned long voff;
-	static unsigned long index;
-	static unsigned long count;
-
-	if (flags == flags0 && cgroup == cgroup0 && mapcnt == mapcnt0 &&
-	    offset == index + count && size && voffset == voff + count) {
-		count += size;
-		return;
-	}
-
-	if (count) {
-		if (opt_pid)
-			printf("%lx\t", voff);
-		if (opt_file)
-			printf("%lx\t", voff);
-		if (opt_list_cgroup)
-			printf("@%llu\t", (unsigned long long)cgroup0);
-		if (opt_list_mapcnt)
-			printf("%lu\t", mapcnt0);
-		printf("%lx\t%lx\t%s\n",
-				index, count, page_flag_name(flags0));
-	}
-
-	flags0 = flags;
-	cgroup0 = cgroup;
-	mapcnt0 = mapcnt;
-	index  = offset;
-	voff   = voffset;
-	count  = size;
-}
-
-static void flush_page_range(void)
-{
-	show_page_range(0, 0, 0, 0, 0, 0);
-}
-
-static void show_page(unsigned long voffset, unsigned long offset,
-		      uint64_t flags, uint64_t cgroup, uint64_t mapcnt)
-{
-	if (opt_pid)
-		printf("%lx\t", voffset);
-	if (opt_file)
-		printf("%lx\t", voffset);
-	if (opt_list_cgroup)
-		printf("@%llu\t", (unsigned long long)cgroup);
-	if (opt_list_mapcnt)
-		printf("%lu\t", mapcnt);
-
-	printf("%lx\t%s\n", offset, page_flag_name(flags));
-}
-
-static void show_summary(void)
-{
-	size_t i;
-
-	printf("             flags\tpage-count       MB"
-		"  symbolic-flags\t\t\tlong-symbolic-flags\n");
-
-	for (i = 0; i < ARRAY_SIZE(nr_pages); i++) {
-		if (nr_pages[i])
-			printf("0x%016llx\t%10lu %8lu  %s\t%s\n",
-				(unsigned long long)page_flags[i],
-				nr_pages[i],
-				pages2mb(nr_pages[i]),
-				page_flag_name(page_flags[i]),
-				page_flag_longname(page_flags[i]));
-	}
-
-	printf("             total\t%10lu %8lu\n",
-			total_pages, pages2mb(total_pages));
-}
-
-
-/*
- * page flag filters
- */
-
-static int bit_mask_ok(uint64_t flags)
-{
-	int i;
-
-	for (i = 0; i < nr_bit_filters; i++) {
-		if (opt_bits[i] == KPF_ALL_BITS) {
-			if ((flags & opt_mask[i]) == 0)
-				return 0;
-		} else {
-			if ((flags & opt_mask[i]) != opt_bits[i])
-				return 0;
-		}
-	}
-
-	return 1;
-}
-
-static uint64_t expand_overloaded_flags(uint64_t flags, uint64_t pme)
-{
-	/* Anonymous pages overload PG_mappedtodisk */
-	if ((flags & BIT(ANON)) && (flags & BIT(MAPPEDTODISK)))
-		flags ^= BIT(MAPPEDTODISK) | BIT(ANON_EXCLUSIVE);
-
-	/* SLOB/SLUB overload several page flags */
-	if (flags & BIT(SLAB)) {
-		if (flags & BIT(PRIVATE))
-			flags ^= BIT(PRIVATE) | BIT(SLOB_FREE);
-		if (flags & BIT(ACTIVE))
-			flags ^= BIT(ACTIVE) | BIT(SLUB_FROZEN);
-		if (flags & BIT(ERROR))
-			flags ^= BIT(ERROR) | BIT(SLUB_DEBUG);
-	}
-
-	/* PG_reclaim is overloaded as PG_readahead in the read path */
-	if ((flags & (BIT(RECLAIM) | BIT(WRITEBACK))) == BIT(RECLAIM))
-		flags ^= BIT(RECLAIM) | BIT(READAHEAD);
-
-	if (pme & PM_SOFT_DIRTY)
-		flags |= BIT(SOFTDIRTY);
-	if (pme & PM_FILE)
-		flags |= BIT(FILE);
-	if (pme & PM_SWAP)
-		flags |= BIT(SWAP);
-	if (pme & PM_MMAP_EXCLUSIVE)
-		flags |= BIT(MMAP_EXCLUSIVE);
-
-	return flags;
-}
-
-static uint64_t well_known_flags(uint64_t flags)
-{
-	/* hide flags intended only for kernel hacker */
-	flags &= ~KPF_HACKERS_BITS;
-
-	/* hide non-hugeTLB compound pages */
-	if ((flags & BITS_COMPOUND) && !(flags & BIT(HUGE)))
-		flags &= ~BITS_COMPOUND;
-
-	return flags;
-}
-
-static uint64_t kpageflags_flags(uint64_t flags, uint64_t pme)
-{
-	if (opt_raw)
-		flags = expand_overloaded_flags(flags, pme);
-	else
-		flags = well_known_flags(flags);
-
-	return flags;
-}
-
-/*
- * page actions
- */
-
-static void prepare_hwpoison_fd(void)
-{
-	char buf[MAX_PATH + 1];
-
-	hwpoison_debug_fs = debugfs__mount();
-	if (!hwpoison_debug_fs) {
-		perror("mount debugfs");
-		exit(EXIT_FAILURE);
-	}
-
-	if (opt_hwpoison && !hwpoison_inject_fd) {
-		snprintf(buf, MAX_PATH, "%s/hwpoison/corrupt-pfn",
-			hwpoison_debug_fs);
-		hwpoison_inject_fd = checked_open(buf, O_WRONLY);
-	}
-
-	if (opt_unpoison && !hwpoison_forget_fd) {
-		snprintf(buf, MAX_PATH, "%s/hwpoison/unpoison-pfn",
-			hwpoison_debug_fs);
-		hwpoison_forget_fd = checked_open(buf, O_WRONLY);
-	}
-}
-
-static int hwpoison_page(unsigned long offset)
-{
-	char buf[100];
-	int len;
-
-	len = sprintf(buf, "0x%lx\n", offset);
-	len = write(hwpoison_inject_fd, buf, len);
-	if (len < 0) {
-		perror("hwpoison inject");
-		return len;
-	}
-	return 0;
-}
-
-static int unpoison_page(unsigned long offset)
-{
-	char buf[100];
-	int len;
-
-	len = sprintf(buf, "0x%lx\n", offset);
-	len = write(hwpoison_forget_fd, buf, len);
-	if (len < 0) {
-		perror("hwpoison forget");
-		return len;
-	}
-	return 0;
-}
-
-static int mark_page_idle(unsigned long offset)
-{
-	static unsigned long off;
-	static uint64_t buf;
-	int len;
-
-	if ((offset / 64 == off / 64) || buf == 0) {
-		buf |= 1UL << (offset % 64);
-		off = offset;
-		return 0;
-	}
-
-	len = pwrite(page_idle_fd, &buf, 8, 8 * (off / 64));
-	if (len < 0) {
-		perror("mark page idle");
-		return len;
-	}
-
-	buf = 1UL << (offset % 64);
-	off = offset;
-
-	return 0;
-}
-
-/*
- * page frame walker
- */
-
-static size_t hash_slot(uint64_t flags)
-{
-	size_t k = HASH_KEY(flags);
-	size_t i;
-
-	/* Explicitly reserve slot 0 for flags 0: the following logic
-	 * cannot distinguish an unoccupied slot from slot (flags==0).
-	 */
-	if (flags == 0)
-		return 0;
-
-	/* search through the remaining (HASH_SIZE-1) slots */
-	for (i = 1; i < ARRAY_SIZE(page_flags); i++, k++) {
-		if (!k || k >= ARRAY_SIZE(page_flags))
-			k = 1;
-		if (page_flags[k] == 0) {
-			page_flags[k] = flags;
-			return k;
-		}
-		if (page_flags[k] == flags)
-			return k;
-	}
-
-	fatal("hash table full: bump up HASH_SHIFT?\n");
-	exit(EXIT_FAILURE);
-}
-
-static void add_page(unsigned long voffset, unsigned long offset,
-		     uint64_t flags, uint64_t cgroup, uint64_t mapcnt,
-		     uint64_t pme)
-{
-	flags = kpageflags_flags(flags, pme);
-
-	if (!bit_mask_ok(flags))
-		return;
-
-	if (opt_cgroup && cgroup != (uint64_t)opt_cgroup)
-		return;
-
-	if (opt_hwpoison)
-		hwpoison_page(offset);
-	if (opt_unpoison)
-		unpoison_page(offset);
-
-	if (opt_mark_idle)
-		mark_page_idle(offset);
-
-	if (opt_list == 1)
-		show_page_range(voffset, offset, 1, flags, cgroup, mapcnt);
-	else if (opt_list == 2)
-		show_page(voffset, offset, flags, cgroup, mapcnt);
-
-	nr_pages[hash_slot(flags)]++;
-	total_pages++;
-}
-
-#define KPAGEFLAGS_BATCH	(64 << 10)	/* 64k pages */
-static void walk_pfn(unsigned long voffset,
-		     unsigned long index,
-		     unsigned long count,
-		     uint64_t pme)
-{
-	uint64_t buf[KPAGEFLAGS_BATCH];
-	uint64_t cgi[KPAGEFLAGS_BATCH];
-	uint64_t cnt[KPAGEFLAGS_BATCH];
-	unsigned long batch;
-	unsigned long pages;
-	unsigned long i;
-
-	/*
-	 * kpagecgroup_read() reads only if kpagecgroup were opened, but
-	 * /proc/kpagecgroup might even not exist, so it's better to fill
-	 * them with zeros here.
-	 */
-	if (count == 1)
-		cgi[0] = 0;
-	else
-		memset(cgi, 0, sizeof cgi);
-
-	while (count) {
-		batch = min_t(unsigned long, count, KPAGEFLAGS_BATCH);
-		pages = kpageflags_read(buf, index, batch);
-		if (pages == 0)
-			break;
-
-		if (kpagecgroup_read(cgi, index, pages) != pages)
-			fatal("kpagecgroup returned fewer pages than expected");
-
-		if (kpagecount_read(cnt, index, pages) != pages)
-			fatal("kpagecount returned fewer pages than expected");
-
-		for (i = 0; i < pages; i++)
-			add_page(voffset + i, index + i,
-				 buf[i], cgi[i], cnt[i], pme);
-
-		index += pages;
-		count -= pages;
-	}
-}
-
-static void walk_swap(unsigned long voffset, uint64_t pme)
-{
-	uint64_t flags = kpageflags_flags(0, pme);
-
-	if (!bit_mask_ok(flags))
-		return;
-
-	if (opt_cgroup)
-		return;
-
-	if (opt_list == 1)
-		show_page_range(voffset, pagemap_swap_offset(pme),
-				1, flags, 0, 0);
-	else if (opt_list == 2)
-		show_page(voffset, pagemap_swap_offset(pme), flags, 0, 0);
-
-	nr_pages[hash_slot(flags)]++;
-	total_pages++;
-}
-
-#define PAGEMAP_BATCH	(64 << 10)
-static void walk_vma(unsigned long index, unsigned long count)
-{
-	uint64_t buf[PAGEMAP_BATCH];
-	unsigned long batch;
-	unsigned long pages;
-	unsigned long pfn;
-	unsigned long i;
-
-	while (count) {
-		batch = min_t(unsigned long, count, PAGEMAP_BATCH);
-		pages = pagemap_read(buf, index, batch);
-		if (pages == 0)
-			break;
-
-		for (i = 0; i < pages; i++) {
-			pfn = pagemap_pfn(buf[i]);
-			if (pfn)
-				walk_pfn(index + i, pfn, 1, buf[i]);
-			if (buf[i] & PM_SWAP)
-				walk_swap(index + i, buf[i]);
-		}
-
-		index += pages;
-		count -= pages;
-	}
-}
-
-static void walk_task(unsigned long index, unsigned long count)
-{
-	const unsigned long end = index + count;
-	unsigned long start;
-	int i = 0;
-
-	while (index < end) {
-
-		while (pg_end[i] <= index)
-			if (++i >= nr_vmas)
-				return;
-		if (pg_start[i] >= end)
-			return;
-
-		start = max_t(unsigned long, pg_start[i], index);
-		index = min_t(unsigned long, pg_end[i], end);
-
-		assert(start < index);
-		walk_vma(start, index - start);
-	}
-}
-
-static void add_addr_range(unsigned long offset, unsigned long size)
-{
-	if (nr_addr_ranges >= MAX_ADDR_RANGES)
-		fatal("too many addr ranges\n");
-
-	opt_offset[nr_addr_ranges] = offset;
-	opt_size[nr_addr_ranges] = min_t(unsigned long, size, ULONG_MAX-offset);
-	nr_addr_ranges++;
-}
-
-static void walk_addr_ranges(void)
-{
-	int i;
-
-	kpageflags_fd = checked_open(opt_kpageflags, O_RDONLY);
-
-	if (!nr_addr_ranges)
-		add_addr_range(0, ULONG_MAX);
-
-	for (i = 0; i < nr_addr_ranges; i++)
-		if (!opt_pid)
-			walk_pfn(opt_offset[i], opt_offset[i], opt_size[i], 0);
-		else
-			walk_task(opt_offset[i], opt_size[i]);
-
-	if (opt_mark_idle)
-		mark_page_idle(0);
-
-	close(kpageflags_fd);
-}
-
-
-/*
- * user interface
- */
-
-static const char *page_flag_type(uint64_t flag)
-{
-	if (flag & KPF_HACKERS_BITS)
-		return "(r)";
-	if (flag & KPF_OVERLOADED_BITS)
-		return "(o)";
-	return "   ";
-}
-
-static void usage(void)
-{
-	size_t i, j;
-
-	printf(
-"page-types [options]\n"
-"            -r|--raw                   Raw mode, for kernel developers\n"
-"            -d|--describe flags        Describe flags\n"
-"            -a|--addr    addr-spec     Walk a range of pages\n"
-"            -b|--bits    bits-spec     Walk pages with specified bits\n"
-"            -c|--cgroup  path|@inode   Walk pages within memory cgroup\n"
-"            -p|--pid     pid           Walk process address space\n"
-"            -f|--file    filename      Walk file address space\n"
-"            -i|--mark-idle             Mark pages idle\n"
-"            -l|--list                  Show page details in ranges\n"
-"            -L|--list-each             Show page details one by one\n"
-"            -C|--list-cgroup           Show cgroup inode for pages\n"
-"            -M|--list-mapcnt           Show page map count\n"
-"            -N|--no-summary            Don't show summary info\n"
-"            -X|--hwpoison              hwpoison pages\n"
-"            -x|--unpoison              unpoison pages\n"
-"            -F|--kpageflags filename   kpageflags file to parse\n"
-"            -h|--help                  Show this usage message\n"
-"flags:\n"
-"            0x10                       bitfield format, e.g.\n"
-"            anon                       bit-name, e.g.\n"
-"            0x10,anon                  comma-separated list, e.g.\n"
-"addr-spec:\n"
-"            N                          one page at offset N (unit: pages)\n"
-"            N+M                        pages range from N to N+M-1\n"
-"            N,M                        pages range from N to M-1\n"
-"            N,                         pages range from N to end\n"
-"            ,M                         pages range from 0 to M-1\n"
-"bits-spec:\n"
-"            bit1,bit2                  (flags & (bit1|bit2)) != 0\n"
-"            bit1,bit2=bit1             (flags & (bit1|bit2)) == bit1\n"
-"            bit1,~bit2                 (flags & (bit1|bit2)) == bit1\n"
-"            =bit1,bit2                 flags == (bit1|bit2)\n"
-"bit-names:\n"
-	);
-
-	for (i = 0, j = 0; i < ARRAY_SIZE(page_flag_names); i++) {
-		if (!page_flag_names[i])
-			continue;
-		printf("%16s%s", page_flag_names[i] + 2,
-				 page_flag_type(1ULL << i));
-		if (++j > 3) {
-			j = 0;
-			putchar('\n');
-		}
-	}
-	printf("\n                                   "
-		"(r) raw mode bits  (o) overloaded bits\n");
-}
-
-static unsigned long long parse_number(const char *str)
-{
-	unsigned long long n;
-
-	n = strtoll(str, NULL, 0);
-
-	if (n == 0 && str[0] != '0')
-		fatal("invalid name or number: %s\n", str);
-
-	return n;
-}
-
-static void parse_pid(const char *str)
-{
-	FILE *file;
-	char buf[5000];
-
-	opt_pid = parse_number(str);
-
-	sprintf(buf, "/proc/%d/pagemap", opt_pid);
-	pagemap_fd = checked_open(buf, O_RDONLY);
-
-	sprintf(buf, "/proc/%d/maps", opt_pid);
-	file = fopen(buf, "r");
-	if (!file) {
-		perror(buf);
-		exit(EXIT_FAILURE);
-	}
-
-	while (fgets(buf, sizeof(buf), file) != NULL) {
-		unsigned long vm_start;
-		unsigned long vm_end;
-		unsigned long long pgoff;
-		int major, minor;
-		char r, w, x, s;
-		unsigned long ino;
-		int n;
-
-		n = sscanf(buf, "%lx-%lx %c%c%c%c %llx %x:%x %lu",
-			   &vm_start,
-			   &vm_end,
-			   &r, &w, &x, &s,
-			   &pgoff,
-			   &major, &minor,
-			   &ino);
-		if (n < 10) {
-			fprintf(stderr, "unexpected line: %s\n", buf);
-			continue;
-		}
-		pg_start[nr_vmas] = vm_start / page_size;
-		pg_end[nr_vmas] = vm_end / page_size;
-		if (++nr_vmas >= MAX_VMAS) {
-			fprintf(stderr, "too many VMAs\n");
-			break;
-		}
-	}
-	fclose(file);
-}
-
-static void show_file(const char *name, const struct stat *st)
-{
-	unsigned long long size = st->st_size;
-	char atime[64], mtime[64];
-	long now = time(NULL);
-
-	printf("%s\tInode: %u\tSize: %llu (%llu pages)\n",
-			name, (unsigned)st->st_ino,
-			size, (size + page_size - 1) / page_size);
-
-	strftime(atime, sizeof(atime), "%c", localtime(&st->st_atime));
-	strftime(mtime, sizeof(mtime), "%c", localtime(&st->st_mtime));
-
-	printf("Modify: %s (%ld seconds ago)\nAccess: %s (%ld seconds ago)\n",
-			mtime, now - st->st_mtime,
-			atime, now - st->st_atime);
-}
-
-static sigjmp_buf sigbus_jmp;
-
-static void * volatile sigbus_addr;
-
-static void sigbus_handler(int sig, siginfo_t *info, void *ucontex)
-{
-	(void)sig;
-	(void)ucontex;
-	sigbus_addr = info ? info->si_addr : NULL;
-	siglongjmp(sigbus_jmp, 1);
-}
-
-static struct sigaction sigbus_action = {
-	.sa_sigaction = sigbus_handler,
-	.sa_flags = SA_SIGINFO,
-};
-
-static void walk_file_range(const char *name, int fd,
-			    unsigned long off, unsigned long end)
-{
-	uint8_t vec[PAGEMAP_BATCH];
-	uint64_t buf[PAGEMAP_BATCH], flags;
-	uint64_t cgroup = 0;
-	uint64_t mapcnt = 0;
-	unsigned long nr_pages, pfn, i;
-	ssize_t len;
-	void *ptr;
-	int first = 1;
-
-	for (; off < end; off += len) {
-		nr_pages = (end - off + page_size - 1) / page_size;
-		if (nr_pages > PAGEMAP_BATCH)
-			nr_pages = PAGEMAP_BATCH;
-		len = nr_pages * page_size;
-
-		ptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, off);
-		if (ptr == MAP_FAILED)
-			fatal("mmap failed: %s", name);
-
-		/* determine cached pages */
-		if (mincore(ptr, len, vec))
-			fatal("mincore failed: %s", name);
-
-		/* turn off readahead */
-		if (madvise(ptr, len, MADV_RANDOM))
-			fatal("madvice failed: %s", name);
-
-		if (sigsetjmp(sigbus_jmp, 1)) {
-			end = off + sigbus_addr ? sigbus_addr - ptr : 0;
-			fprintf(stderr, "got sigbus at offset %lld: %s\n",
-					(long long)end, name);
-			goto got_sigbus;
-		}
-
-		/* populate ptes */
-		for (i = 0; i < nr_pages ; i++) {
-			if (vec[i] & 1)
-				(void)*(volatile int *)(ptr + i * page_size);
-		}
-got_sigbus:
-
-		/* turn off harvesting reference bits */
-		if (madvise(ptr, len, MADV_SEQUENTIAL))
-			fatal("madvice failed: %s", name);
-
-		if (pagemap_read(buf, (unsigned long)ptr / page_size,
-					nr_pages) != nr_pages)
-			fatal("cannot read pagemap");
-
-		munmap(ptr, len);
-
-		for (i = 0; i < nr_pages; i++) {
-			pfn = pagemap_pfn(buf[i]);
-			if (!pfn)
-				continue;
-			if (!kpageflags_read(&flags, pfn, 1))
-				continue;
-			if (!kpagecgroup_read(&cgroup, pfn, 1))
-				fatal("kpagecgroup_read failed");
-			if (!kpagecount_read(&mapcnt, pfn, 1))
-				fatal("kpagecount_read failed");
-			if (first && opt_list) {
-				first = 0;
-				flush_page_range();
-			}
-			add_page(off / page_size + i, pfn,
-				 flags, cgroup, mapcnt, buf[i]);
-		}
-	}
-}
-
-static void walk_file(const char *name, const struct stat *st)
-{
-	int i;
-	int fd;
-
-	fd = checked_open(name, O_RDONLY|O_NOATIME|O_NOFOLLOW);
-
-	if (!nr_addr_ranges)
-		add_addr_range(0, st->st_size / page_size);
-
-	for (i = 0; i < nr_addr_ranges; i++)
-		walk_file_range(name, fd, opt_offset[i] * page_size,
-				(opt_offset[i] + opt_size[i]) * page_size);
-
-	close(fd);
-}
-
-int walk_tree(const char *name, const struct stat *st, int type, struct FTW *f)
-{
-	(void)f;
-	switch (type) {
-	case FTW_F:
-		if (S_ISREG(st->st_mode))
-			walk_file(name, st);
-		break;
-	case FTW_DNR:
-		fprintf(stderr, "cannot read dir: %s\n", name);
-		break;
-	}
-	return 0;
-}
-
-struct stat st;
-
-static void walk_page_cache(void)
-{
-	kpageflags_fd = checked_open(opt_kpageflags, O_RDONLY);
-	pagemap_fd = checked_open("/proc/self/pagemap", O_RDONLY);
-	sigaction(SIGBUS, &sigbus_action, NULL);
-
-	if (stat(opt_file, &st))
-		fatal("stat failed: %s\n", opt_file);
-
-	if (S_ISREG(st.st_mode)) {
-		walk_file(opt_file, &st);
-	} else if (S_ISDIR(st.st_mode)) {
-		/* do not follow symlinks and mountpoints */
-		if (nftw(opt_file, walk_tree, 64, FTW_MOUNT | FTW_PHYS) < 0)
-			fatal("nftw failed: %s\n", opt_file);
-	} else
-		fatal("unhandled file type: %s\n", opt_file);
-
-	close(kpageflags_fd);
-	close(pagemap_fd);
-	signal(SIGBUS, SIG_DFL);
-}
-
-static void parse_file(const char *name)
-{
-	opt_file = name;
-}
-
-static void parse_cgroup(const char *path)
-{
-	if (path[0] == '@') {
-		opt_cgroup = parse_number(path + 1);
-		return;
-	}
-
-	struct stat st;
-
-	if (stat(path, &st))
-		fatal("stat failed: %s: %m\n", path);
-
-	if (!S_ISDIR(st.st_mode))
-		fatal("cgroup supposed to be a directory: %s\n", path);
-
-	opt_cgroup = st.st_ino;
-}
-
-static void parse_addr_range(const char *optarg)
-{
-	unsigned long offset;
-	unsigned long size;
-	char *p;
-
-	p = strchr(optarg, ',');
-	if (!p)
-		p = strchr(optarg, '+');
-
-	if (p == optarg) {
-		offset = 0;
-		size   = parse_number(p + 1);
-	} else if (p) {
-		offset = parse_number(optarg);
-		if (p[1] == '\0')
-			size = ULONG_MAX;
-		else {
-			size = parse_number(p + 1);
-			if (*p == ',') {
-				if (size < offset)
-					fatal("invalid range: %lu,%lu\n",
-							offset, size);
-				size -= offset;
-			}
-		}
-	} else {
-		offset = parse_number(optarg);
-		size   = 1;
-	}
-
-	add_addr_range(offset, size);
-}
-
-static void add_bits_filter(uint64_t mask, uint64_t bits)
-{
-	if (nr_bit_filters >= MAX_BIT_FILTERS)
-		fatal("too much bit filters\n");
-
-	opt_mask[nr_bit_filters] = mask;
-	opt_bits[nr_bit_filters] = bits;
-	nr_bit_filters++;
-}
-
-static uint64_t parse_flag_name(const char *str, int len)
-{
-	size_t i;
-
-	if (!*str || !len)
-		return 0;
-
-	if (len <= 8 && !strncmp(str, "compound", len))
-		return BITS_COMPOUND;
-
-	for (i = 0; i < ARRAY_SIZE(page_flag_names); i++) {
-		if (!page_flag_names[i])
-			continue;
-		if (!strncmp(str, page_flag_names[i] + 2, len))
-			return 1ULL << i;
-	}
-
-	return parse_number(str);
-}
-
-static uint64_t parse_flag_names(const char *str, int all)
-{
-	const char *p    = str;
-	uint64_t   flags = 0;
-
-	while (1) {
-		if (*p == ',' || *p == '=' || *p == '\0') {
-			if ((*str != '~') || (*str == '~' && all && *++str))
-				flags |= parse_flag_name(str, p - str);
-			if (*p != ',')
-				break;
-			str = p + 1;
-		}
-		p++;
-	}
-
-	return flags;
-}
-
-static void parse_bits_mask(const char *optarg)
-{
-	uint64_t mask;
-	uint64_t bits;
-	const char *p;
-
-	p = strchr(optarg, '=');
-	if (p == optarg) {
-		mask = KPF_ALL_BITS;
-		bits = parse_flag_names(p + 1, 0);
-	} else if (p) {
-		mask = parse_flag_names(optarg, 0);
-		bits = parse_flag_names(p + 1, 0);
-	} else if (strchr(optarg, '~')) {
-		mask = parse_flag_names(optarg, 1);
-		bits = parse_flag_names(optarg, 0);
-	} else {
-		mask = parse_flag_names(optarg, 0);
-		bits = KPF_ALL_BITS;
-	}
-
-	add_bits_filter(mask, bits);
-}
-
-static void parse_kpageflags(const char *name)
-{
-	opt_kpageflags = name;
-}
-
-static void describe_flags(const char *optarg)
-{
-	uint64_t flags = parse_flag_names(optarg, 0);
-
-	printf("0x%016llx\t%s\t%s\n",
-		(unsigned long long)flags,
-		page_flag_name(flags),
-		page_flag_longname(flags));
-}
-
-static const struct option opts[] = {
-	{ "raw"       , 0, NULL, 'r' },
-	{ "pid"       , 1, NULL, 'p' },
-	{ "file"      , 1, NULL, 'f' },
-	{ "addr"      , 1, NULL, 'a' },
-	{ "bits"      , 1, NULL, 'b' },
-	{ "cgroup"    , 1, NULL, 'c' },
-	{ "describe"  , 1, NULL, 'd' },
-	{ "mark-idle" , 0, NULL, 'i' },
-	{ "list"      , 0, NULL, 'l' },
-	{ "list-each" , 0, NULL, 'L' },
-	{ "list-cgroup", 0, NULL, 'C' },
-	{ "list-mapcnt", 0, NULL, 'M' },
-	{ "no-summary", 0, NULL, 'N' },
-	{ "hwpoison"  , 0, NULL, 'X' },
-	{ "unpoison"  , 0, NULL, 'x' },
-	{ "kpageflags", 0, NULL, 'F' },
-	{ "help"      , 0, NULL, 'h' },
-	{ NULL        , 0, NULL, 0 }
-};
-
-int main(int argc, char *argv[])
-{
-	int c;
-
-	page_size = getpagesize();
-
-	while ((c = getopt_long(argc, argv,
-				"rp:f:a:b:d:c:CilLMNXxF:h",
-				opts, NULL)) != -1) {
-		switch (c) {
-		case 'r':
-			opt_raw = 1;
-			break;
-		case 'p':
-			parse_pid(optarg);
-			break;
-		case 'f':
-			parse_file(optarg);
-			break;
-		case 'a':
-			parse_addr_range(optarg);
-			break;
-		case 'b':
-			parse_bits_mask(optarg);
-			break;
-		case 'c':
-			parse_cgroup(optarg);
-			break;
-		case 'C':
-			opt_list_cgroup = 1;
-			break;
-		case 'd':
-			describe_flags(optarg);
-			exit(0);
-		case 'i':
-			opt_mark_idle = 1;
-			break;
-		case 'l':
-			opt_list = 1;
-			break;
-		case 'L':
-			opt_list = 2;
-			break;
-		case 'M':
-			opt_list_mapcnt = 1;
-			break;
-		case 'N':
-			opt_no_summary = 1;
-			break;
-		case 'X':
-			opt_hwpoison = 1;
-			prepare_hwpoison_fd();
-			break;
-		case 'x':
-			opt_unpoison = 1;
-			prepare_hwpoison_fd();
-			break;
-		case 'F':
-			parse_kpageflags(optarg);
-			break;
-		case 'h':
-			usage();
-			exit(0);
-		default:
-			usage();
-			exit(1);
-		}
-	}
-
-	if (!opt_kpageflags)
-		opt_kpageflags = PROC_KPAGEFLAGS;
-
-	if (opt_cgroup || opt_list_cgroup)
-		kpagecgroup_fd = checked_open(PROC_KPAGECGROUP, O_RDONLY);
-
-	if (opt_list && opt_list_mapcnt)
-		kpagecount_fd = checked_open(PROC_KPAGECOUNT, O_RDONLY);
-
-	if (opt_mark_idle)
-		page_idle_fd = checked_open(SYS_KERNEL_MM_PAGE_IDLE, O_RDWR);
-
-	if (opt_list && opt_pid)
-		printf("voffset\t");
-	if (opt_list && opt_file)
-		printf("foffset\t");
-	if (opt_list && opt_list_cgroup)
-		printf("cgroup\t");
-	if (opt_list && opt_list_mapcnt)
-		printf("map-cnt\t");
-
-	if (opt_list == 1)
-		printf("offset\tlen\tflags\n");
-	if (opt_list == 2)
-		printf("offset\tflags\n");
-
-	if (opt_file)
-		walk_page_cache();
-	else
-		walk_addr_ranges();
-
-	if (opt_list == 1)
-		flush_page_range();
-
-	if (opt_no_summary)
-		return 0;
-
-	if (opt_list)
-		printf("\n\n");
-
-	if (opt_file) {
-		show_file(opt_file, &st);
-		printf("\n");
-	}
-
-	show_summary();
-
-	if (opt_list_mapcnt)
-		close(kpagecount_fd);
-
-	if (page_idle_fd >= 0)
-		close(page_idle_fd);
-
-	return 0;
-}
diff --git a/tools/vm/page_owner_sort.c b/tools/vm/page_owner_sort.c
deleted file mode 100644
index 7c2ac124cdc8..000000000000
--- a/tools/vm/page_owner_sort.c
+++ /dev/null
@@ -1,897 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * User-space helper to sort the output of /sys/kernel/debug/page_owner
- *
- * Example use:
- * cat /sys/kernel/debug/page_owner > page_owner_full.txt
- * ./page_owner_sort page_owner_full.txt sorted_page_owner.txt
- * Or sort by total memory:
- * ./page_owner_sort -m page_owner_full.txt sorted_page_owner.txt
- *
- * See Documentation/mm/page_owner.rst
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-#include <regex.h>
-#include <errno.h>
-#include <linux/types.h>
-#include <getopt.h>
-
-#define bool int
-#define true 1
-#define false 0
-#define TASK_COMM_LEN 16
-
-struct block_list {
-	char *txt;
-	char *comm; // task command name
-	char *stacktrace;
-	__u64 ts_nsec;
-	__u64 free_ts_nsec;
-	int len;
-	int num;
-	int page_num;
-	pid_t pid;
-	pid_t tgid;
-	int allocator;
-};
-enum FILTER_BIT {
-	FILTER_UNRELEASE = 1<<1,
-	FILTER_PID = 1<<2,
-	FILTER_TGID = 1<<3,
-	FILTER_COMM = 1<<4
-};
-enum CULL_BIT {
-	CULL_UNRELEASE = 1<<1,
-	CULL_PID = 1<<2,
-	CULL_TGID = 1<<3,
-	CULL_COMM = 1<<4,
-	CULL_STACKTRACE = 1<<5,
-	CULL_ALLOCATOR = 1<<6
-};
-enum ALLOCATOR_BIT {
-	ALLOCATOR_CMA = 1<<1,
-	ALLOCATOR_SLAB = 1<<2,
-	ALLOCATOR_VMALLOC = 1<<3,
-	ALLOCATOR_OTHERS = 1<<4
-};
-enum ARG_TYPE {
-	ARG_TXT, ARG_COMM, ARG_STACKTRACE, ARG_ALLOC_TS, ARG_FREE_TS,
-	ARG_CULL_TIME, ARG_PAGE_NUM, ARG_PID, ARG_TGID, ARG_UNKNOWN, ARG_FREE,
-	ARG_ALLOCATOR
-};
-enum SORT_ORDER {
-	SORT_ASC = 1,
-	SORT_DESC = -1,
-};
-struct filter_condition {
-	pid_t *pids;
-	pid_t *tgids;
-	char **comms;
-	int pids_size;
-	int tgids_size;
-	int comms_size;
-};
-struct sort_condition {
-	int (**cmps)(const void *, const void *);
-	int *signs;
-	int size;
-};
-static struct filter_condition fc;
-static struct sort_condition sc;
-static regex_t order_pattern;
-static regex_t pid_pattern;
-static regex_t tgid_pattern;
-static regex_t comm_pattern;
-static regex_t ts_nsec_pattern;
-static regex_t free_ts_nsec_pattern;
-static struct block_list *list;
-static int list_size;
-static int max_size;
-static int cull;
-static int filter;
-static bool debug_on;
-
-static void set_single_cmp(int (*cmp)(const void *, const void *), int sign);
-
-int read_block(char *buf, char *ext_buf, int buf_size, FILE *fin)
-{
-	char *curr = buf, *const buf_end = buf + buf_size;
-
-	while (buf_end - curr > 1 && fgets(curr, buf_end - curr, fin)) {
-		if (*curr == '\n') { /* empty line */
-			return curr - buf;
-		}
-		if (!strncmp(curr, "PFN", 3)) {
-			strcpy(ext_buf, curr);
-			continue;
-		}
-		curr += strlen(curr);
-	}
-
-	return -1; /* EOF or no space left in buf. */
-}
-
-static int compare_txt(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return strcmp(l1->txt, l2->txt);
-}
-
-static int compare_stacktrace(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return strcmp(l1->stacktrace, l2->stacktrace);
-}
-
-static int compare_num(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return l1->num - l2->num;
-}
-
-static int compare_page_num(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return l1->page_num - l2->page_num;
-}
-
-static int compare_pid(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return l1->pid - l2->pid;
-}
-
-static int compare_tgid(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return l1->tgid - l2->tgid;
-}
-
-static int compare_allocator(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return l1->allocator - l2->allocator;
-}
-
-static int compare_comm(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return strcmp(l1->comm, l2->comm);
-}
-
-static int compare_ts(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return l1->ts_nsec < l2->ts_nsec ? -1 : 1;
-}
-
-static int compare_free_ts(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	return l1->free_ts_nsec < l2->free_ts_nsec ? -1 : 1;
-}
-
-static int compare_release(const void *p1, const void *p2)
-{
-	const struct block_list *l1 = p1, *l2 = p2;
-
-	if (!l1->free_ts_nsec && !l2->free_ts_nsec)
-		return 0;
-	if (l1->free_ts_nsec && l2->free_ts_nsec)
-		return 0;
-	return l1->free_ts_nsec ? 1 : -1;
-}
-
-static int compare_cull_condition(const void *p1, const void *p2)
-{
-	if (cull == 0)
-		return compare_txt(p1, p2);
-	if ((cull & CULL_STACKTRACE) && compare_stacktrace(p1, p2))
-		return compare_stacktrace(p1, p2);
-	if ((cull & CULL_PID) && compare_pid(p1, p2))
-		return compare_pid(p1, p2);
-	if ((cull & CULL_TGID) && compare_tgid(p1, p2))
-		return compare_tgid(p1, p2);
-	if ((cull & CULL_COMM) && compare_comm(p1, p2))
-		return compare_comm(p1, p2);
-	if ((cull & CULL_UNRELEASE) && compare_release(p1, p2))
-		return compare_release(p1, p2);
-	if ((cull & CULL_ALLOCATOR) && compare_allocator(p1, p2))
-		return compare_allocator(p1, p2);
-	return 0;
-}
-
-static int compare_sort_condition(const void *p1, const void *p2)
-{
-	int cmp = 0;
-
-	for (int i = 0; i < sc.size; ++i)
-		if (cmp == 0)
-			cmp = sc.signs[i] * sc.cmps[i](p1, p2);
-	return cmp;
-}
-
-static int search_pattern(regex_t *pattern, char *pattern_str, char *buf)
-{
-	int err, val_len;
-	regmatch_t pmatch[2];
-
-	err = regexec(pattern, buf, 2, pmatch, REG_NOTBOL);
-	if (err != 0 || pmatch[1].rm_so == -1) {
-		if (debug_on)
-			fprintf(stderr, "no matching pattern in %s\n", buf);
-		return -1;
-	}
-	val_len = pmatch[1].rm_eo - pmatch[1].rm_so;
-
-	memcpy(pattern_str, buf + pmatch[1].rm_so, val_len);
-
-	return 0;
-}
-
-static bool check_regcomp(regex_t *pattern, const char *regex)
-{
-	int err;
-
-	err = regcomp(pattern, regex, REG_EXTENDED | REG_NEWLINE);
-	if (err != 0 || pattern->re_nsub != 1) {
-		fprintf(stderr, "Invalid pattern %s code %d\n", regex, err);
-		return false;
-	}
-	return true;
-}
-
-static char **explode(char sep, const char *str, int *size)
-{
-	int count = 0, len = strlen(str);
-	int lastindex = -1, j = 0;
-
-	for (int i = 0; i < len; i++)
-		if (str[i] == sep)
-			count++;
-	char **ret = calloc(++count, sizeof(char *));
-
-	for (int i = 0; i < len; i++) {
-		if (str[i] == sep) {
-			ret[j] = calloc(i - lastindex, sizeof(char));
-			memcpy(ret[j++], str + lastindex + 1, i - lastindex - 1);
-			lastindex = i;
-		}
-	}
-	if (lastindex <= len - 1) {
-		ret[j] = calloc(len - lastindex, sizeof(char));
-		memcpy(ret[j++], str + lastindex + 1, strlen(str) - 1 - lastindex);
-	}
-	*size = j;
-	return ret;
-}
-
-static void free_explode(char **arr, int size)
-{
-	for (int i = 0; i < size; i++)
-		free(arr[i]);
-	free(arr);
-}
-
-# define FIELD_BUFF 25
-
-static int get_page_num(char *buf)
-{
-	int order_val;
-	char order_str[FIELD_BUFF] = {0};
-	char *endptr;
-
-	search_pattern(&order_pattern, order_str, buf);
-	errno = 0;
-	order_val = strtol(order_str, &endptr, 10);
-	if (order_val > 64 || errno != 0 || endptr == order_str || *endptr != '\0') {
-		if (debug_on)
-			fprintf(stderr, "wrong order in follow buf:\n%s\n", buf);
-		return 0;
-	}
-
-	return 1 << order_val;
-}
-
-static pid_t get_pid(char *buf)
-{
-	pid_t pid;
-	char pid_str[FIELD_BUFF] = {0};
-	char *endptr;
-
-	search_pattern(&pid_pattern, pid_str, buf);
-	errno = 0;
-	pid = strtol(pid_str, &endptr, 10);
-	if (errno != 0 || endptr == pid_str || *endptr != '\0') {
-		if (debug_on)
-			fprintf(stderr, "wrong/invalid pid in follow buf:\n%s\n", buf);
-		return -1;
-	}
-
-	return pid;
-
-}
-
-static pid_t get_tgid(char *buf)
-{
-	pid_t tgid;
-	char tgid_str[FIELD_BUFF] = {0};
-	char *endptr;
-
-	search_pattern(&tgid_pattern, tgid_str, buf);
-	errno = 0;
-	tgid = strtol(tgid_str, &endptr, 10);
-	if (errno != 0 || endptr == tgid_str || *endptr != '\0') {
-		if (debug_on)
-			fprintf(stderr, "wrong/invalid tgid in follow buf:\n%s\n", buf);
-		return -1;
-	}
-
-	return tgid;
-
-}
-
-static __u64 get_ts_nsec(char *buf)
-{
-	__u64 ts_nsec;
-	char ts_nsec_str[FIELD_BUFF] = {0};
-	char *endptr;
-
-	search_pattern(&ts_nsec_pattern, ts_nsec_str, buf);
-	errno = 0;
-	ts_nsec = strtoull(ts_nsec_str, &endptr, 10);
-	if (errno != 0 || endptr == ts_nsec_str || *endptr != '\0') {
-		if (debug_on)
-			fprintf(stderr, "wrong ts_nsec in follow buf:\n%s\n", buf);
-		return -1;
-	}
-
-	return ts_nsec;
-}
-
-static __u64 get_free_ts_nsec(char *buf)
-{
-	__u64 free_ts_nsec;
-	char free_ts_nsec_str[FIELD_BUFF] = {0};
-	char *endptr;
-
-	search_pattern(&free_ts_nsec_pattern, free_ts_nsec_str, buf);
-	errno = 0;
-	free_ts_nsec = strtoull(free_ts_nsec_str, &endptr, 10);
-	if (errno != 0 || endptr == free_ts_nsec_str || *endptr != '\0') {
-		if (debug_on)
-			fprintf(stderr, "wrong free_ts_nsec in follow buf:\n%s\n", buf);
-		return -1;
-	}
-
-	return free_ts_nsec;
-}
-
-static char *get_comm(char *buf)
-{
-	char *comm_str = malloc(TASK_COMM_LEN);
-
-	memset(comm_str, 0, TASK_COMM_LEN);
-
-	search_pattern(&comm_pattern, comm_str, buf);
-	errno = 0;
-	if (errno != 0) {
-		if (debug_on)
-			fprintf(stderr, "wrong comm in follow buf:\n%s\n", buf);
-		return NULL;
-	}
-
-	return comm_str;
-}
-
-static int get_arg_type(const char *arg)
-{
-	if (!strcmp(arg, "pid") || !strcmp(arg, "p"))
-		return ARG_PID;
-	else if (!strcmp(arg, "tgid") || !strcmp(arg, "tg"))
-		return ARG_TGID;
-	else if (!strcmp(arg, "name") || !strcmp(arg, "n"))
-		return  ARG_COMM;
-	else if (!strcmp(arg, "stacktrace") || !strcmp(arg, "st"))
-		return ARG_STACKTRACE;
-	else if (!strcmp(arg, "free") || !strcmp(arg, "f"))
-		return ARG_FREE;
-	else if (!strcmp(arg, "txt") || !strcmp(arg, "T"))
-		return ARG_TXT;
-	else if (!strcmp(arg, "free_ts") || !strcmp(arg, "ft"))
-		return ARG_FREE_TS;
-	else if (!strcmp(arg, "alloc_ts") || !strcmp(arg, "at"))
-		return ARG_ALLOC_TS;
-	else if (!strcmp(arg, "allocator") || !strcmp(arg, "ator"))
-		return ARG_ALLOCATOR;
-	else {
-		return ARG_UNKNOWN;
-	}
-}
-
-static int get_allocator(const char *buf, const char *migrate_info)
-{
-	char *tmp, *first_line, *second_line;
-	int allocator = 0;
-
-	if (strstr(migrate_info, "CMA"))
-		allocator |= ALLOCATOR_CMA;
-	if (strstr(migrate_info, "slab"))
-		allocator |= ALLOCATOR_SLAB;
-	tmp = strstr(buf, "__vmalloc_node_range");
-	if (tmp) {
-		second_line = tmp;
-		while (*tmp != '\n')
-			tmp--;
-		tmp--;
-		while (*tmp != '\n')
-			tmp--;
-		first_line = ++tmp;
-		tmp = strstr(tmp, "alloc_pages");
-		if (tmp && first_line <= tmp && tmp < second_line)
-			allocator |= ALLOCATOR_VMALLOC;
-	}
-	if (allocator == 0)
-		allocator = ALLOCATOR_OTHERS;
-	return allocator;
-}
-
-static bool match_num_list(int num, int *list, int list_size)
-{
-	for (int i = 0; i < list_size; ++i)
-		if (list[i] == num)
-			return true;
-	return false;
-}
-
-static bool match_str_list(const char *str, char **list, int list_size)
-{
-	for (int i = 0; i < list_size; ++i)
-		if (!strcmp(list[i], str))
-			return true;
-	return false;
-}
-
-static bool is_need(char *buf)
-{
-	__u64 ts_nsec, free_ts_nsec;
-
-	ts_nsec = get_ts_nsec(buf);
-	free_ts_nsec = get_free_ts_nsec(buf);
-
-	if ((filter & FILTER_UNRELEASE) && free_ts_nsec != 0 && ts_nsec < free_ts_nsec)
-		return false;
-	if ((filter & FILTER_PID) && !match_num_list(get_pid(buf), fc.pids, fc.pids_size))
-		return false;
-	if ((filter & FILTER_TGID) &&
-		!match_num_list(get_tgid(buf), fc.tgids, fc.tgids_size))
-		return false;
-
-	char *comm = get_comm(buf);
-
-	if ((filter & FILTER_COMM) &&
-	!match_str_list(comm, fc.comms, fc.comms_size)) {
-		free(comm);
-		return false;
-	}
-	free(comm);
-	return true;
-}
-
-static bool add_list(char *buf, int len, char *ext_buf)
-{
-	if (list_size != 0 &&
-		len == list[list_size-1].len &&
-		memcmp(buf, list[list_size-1].txt, len) == 0) {
-		list[list_size-1].num++;
-		list[list_size-1].page_num += get_page_num(buf);
-		return true;
-	}
-	if (list_size == max_size) {
-		fprintf(stderr, "max_size too small??\n");
-		return false;
-	}
-	if (!is_need(buf))
-		return true;
-	list[list_size].pid = get_pid(buf);
-	list[list_size].tgid = get_tgid(buf);
-	list[list_size].comm = get_comm(buf);
-	list[list_size].txt = malloc(len+1);
-	if (!list[list_size].txt) {
-		fprintf(stderr, "Out of memory\n");
-		return false;
-	}
-	memcpy(list[list_size].txt, buf, len);
-	list[list_size].txt[len] = 0;
-	list[list_size].len = len;
-	list[list_size].num = 1;
-	list[list_size].page_num = get_page_num(buf);
-
-	list[list_size].stacktrace = strchr(list[list_size].txt, '\n') ?: "";
-	if (*list[list_size].stacktrace == '\n')
-		list[list_size].stacktrace++;
-	list[list_size].ts_nsec = get_ts_nsec(buf);
-	list[list_size].free_ts_nsec = get_free_ts_nsec(buf);
-	list[list_size].allocator = get_allocator(buf, ext_buf);
-	list_size++;
-	if (list_size % 1000 == 0) {
-		printf("loaded %d\r", list_size);
-		fflush(stdout);
-	}
-	return true;
-}
-
-static bool parse_cull_args(const char *arg_str)
-{
-	int size = 0;
-	char **args = explode(',', arg_str, &size);
-
-	for (int i = 0; i < size; ++i) {
-		int arg_type = get_arg_type(args[i]);
-
-		if (arg_type == ARG_PID)
-			cull |= CULL_PID;
-		else if (arg_type == ARG_TGID)
-			cull |= CULL_TGID;
-		else if (arg_type == ARG_COMM)
-			cull |= CULL_COMM;
-		else if (arg_type == ARG_STACKTRACE)
-			cull |= CULL_STACKTRACE;
-		else if (arg_type == ARG_FREE)
-			cull |= CULL_UNRELEASE;
-		else if (arg_type == ARG_ALLOCATOR)
-			cull |= CULL_ALLOCATOR;
-		else {
-			free_explode(args, size);
-			return false;
-		}
-	}
-	free_explode(args, size);
-	if (sc.size == 0)
-		set_single_cmp(compare_num, SORT_DESC);
-	return true;
-}
-
-static void set_single_cmp(int (*cmp)(const void *, const void *), int sign)
-{
-	if (sc.signs == NULL || sc.size < 1)
-		sc.signs = calloc(1, sizeof(int));
-	sc.signs[0] = sign;
-	if (sc.cmps == NULL || sc.size < 1)
-		sc.cmps = calloc(1, sizeof(int *));
-	sc.cmps[0] = cmp;
-	sc.size = 1;
-}
-
-static bool parse_sort_args(const char *arg_str)
-{
-	int size = 0;
-
-	if (sc.size != 0) { /* reset sort_condition */
-		free(sc.signs);
-		free(sc.cmps);
-		size = 0;
-	}
-
-	char **args = explode(',', arg_str, &size);
-
-	sc.signs = calloc(size, sizeof(int));
-	sc.cmps = calloc(size, sizeof(int *));
-	for (int i = 0; i < size; ++i) {
-		int offset = 0;
-
-		sc.signs[i] = SORT_ASC;
-		if (args[i][0] == '-' || args[i][0] == '+') {
-			if (args[i][0] == '-')
-				sc.signs[i] = SORT_DESC;
-			offset = 1;
-		}
-
-		int arg_type = get_arg_type(args[i]+offset);
-
-		if (arg_type == ARG_PID)
-			sc.cmps[i] = compare_pid;
-		else if (arg_type == ARG_TGID)
-			sc.cmps[i] = compare_tgid;
-		else if (arg_type == ARG_COMM)
-			sc.cmps[i] = compare_comm;
-		else if (arg_type == ARG_STACKTRACE)
-			sc.cmps[i] = compare_stacktrace;
-		else if (arg_type == ARG_ALLOC_TS)
-			sc.cmps[i] = compare_ts;
-		else if (arg_type == ARG_FREE_TS)
-			sc.cmps[i] = compare_free_ts;
-		else if (arg_type == ARG_TXT)
-			sc.cmps[i] = compare_txt;
-		else if (arg_type == ARG_ALLOCATOR)
-			sc.cmps[i] = compare_allocator;
-		else {
-			free_explode(args, size);
-			sc.size = 0;
-			return false;
-		}
-	}
-	sc.size = size;
-	free_explode(args, size);
-	return true;
-}
-
-static int *parse_nums_list(char *arg_str, int *list_size)
-{
-	int size = 0;
-	char **args = explode(',', arg_str, &size);
-	int *list = calloc(size, sizeof(int));
-
-	errno = 0;
-	for (int i = 0; i < size; ++i) {
-		char *endptr = NULL;
-
-		list[i] = strtol(args[i], &endptr, 10);
-		if (errno != 0 || endptr == args[i] || *endptr != '\0') {
-			free(list);
-			return NULL;
-		}
-	}
-	*list_size = size;
-	free_explode(args, size);
-	return list;
-}
-
-static void print_allocator(FILE *out, int allocator)
-{
-	fprintf(out, "allocated by ");
-	if (allocator & ALLOCATOR_CMA)
-		fprintf(out, "CMA ");
-	if (allocator & ALLOCATOR_SLAB)
-		fprintf(out, "SLAB ");
-	if (allocator & ALLOCATOR_VMALLOC)
-		fprintf(out, "VMALLOC ");
-	if (allocator & ALLOCATOR_OTHERS)
-		fprintf(out, "OTHERS ");
-}
-
-#define BUF_SIZE	(128 * 1024)
-
-static void usage(void)
-{
-	printf("Usage: ./page_owner_sort [OPTIONS] <input> <output>\n"
-		"-m\t\tSort by total memory.\n"
-		"-s\t\tSort by the stack trace.\n"
-		"-t\t\tSort by times (default).\n"
-		"-p\t\tSort by pid.\n"
-		"-P\t\tSort by tgid.\n"
-		"-n\t\tSort by task command name.\n"
-		"-a\t\tSort by memory allocate time.\n"
-		"-r\t\tSort by memory release time.\n"
-		"-f\t\tFilter out the information of blocks whose memory has been released.\n"
-		"-d\t\tPrint debug information.\n"
-		"--pid <pidlist>\tSelect by pid. This selects the information of blocks whose process ID numbers appear in <pidlist>.\n"
-		"--tgid <tgidlist>\tSelect by tgid. This selects the information of blocks whose Thread Group ID numbers appear in <tgidlist>.\n"
-		"--name <cmdlist>\n\t\tSelect by command name. This selects the information of blocks whose command name appears in <cmdlist>.\n"
-		"--cull <rules>\tCull by user-defined rules.<rules> is a single argument in the form of a comma-separated list with some common fields predefined\n"
-		"--sort <order>\tSpecify sort order as: [+|-]key[,[+|-]key[,...]]\n"
-	);
-}
-
-int main(int argc, char **argv)
-{
-	FILE *fin, *fout;
-	char *buf, *ext_buf;
-	int i, count;
-	struct stat st;
-	int opt;
-	struct option longopts[] = {
-		{ "pid", required_argument, NULL, 1 },
-		{ "tgid", required_argument, NULL, 2 },
-		{ "name", required_argument, NULL, 3 },
-		{ "cull",  required_argument, NULL, 4 },
-		{ "sort",  required_argument, NULL, 5 },
-		{ 0, 0, 0, 0},
-	};
-
-	while ((opt = getopt_long(argc, argv, "adfmnprstP", longopts, NULL)) != -1)
-		switch (opt) {
-		case 'a':
-			set_single_cmp(compare_ts, SORT_ASC);
-			break;
-		case 'd':
-			debug_on = true;
-			break;
-		case 'f':
-			filter = filter | FILTER_UNRELEASE;
-			break;
-		case 'm':
-			set_single_cmp(compare_page_num, SORT_DESC);
-			break;
-		case 'p':
-			set_single_cmp(compare_pid, SORT_ASC);
-			break;
-		case 'r':
-			set_single_cmp(compare_free_ts, SORT_ASC);
-			break;
-		case 's':
-			set_single_cmp(compare_stacktrace, SORT_ASC);
-			break;
-		case 't':
-			set_single_cmp(compare_num, SORT_DESC);
-			break;
-		case 'P':
-			set_single_cmp(compare_tgid, SORT_ASC);
-			break;
-		case 'n':
-			set_single_cmp(compare_comm, SORT_ASC);
-			break;
-		case 1:
-			filter = filter | FILTER_PID;
-			fc.pids = parse_nums_list(optarg, &fc.pids_size);
-			if (fc.pids == NULL) {
-				fprintf(stderr, "wrong/invalid pid in from the command line:%s\n",
-						optarg);
-				exit(1);
-			}
-			break;
-		case 2:
-			filter = filter | FILTER_TGID;
-			fc.tgids = parse_nums_list(optarg, &fc.tgids_size);
-			if (fc.tgids == NULL) {
-				fprintf(stderr, "wrong/invalid tgid in from the command line:%s\n",
-						optarg);
-				exit(1);
-			}
-			break;
-		case 3:
-			filter = filter | FILTER_COMM;
-			fc.comms = explode(',', optarg, &fc.comms_size);
-			break;
-		case 4:
-			if (!parse_cull_args(optarg)) {
-				fprintf(stderr, "wrong argument after --cull option:%s\n",
-						optarg);
-				exit(1);
-			}
-			break;
-		case 5:
-			if (!parse_sort_args(optarg)) {
-				fprintf(stderr, "wrong argument after --sort option:%s\n",
-						optarg);
-				exit(1);
-			}
-			break;
-		default:
-			usage();
-			exit(1);
-		}
-
-	if (optind >= (argc - 1)) {
-		usage();
-		exit(1);
-	}
-
-	fin = fopen(argv[optind], "r");
-	fout = fopen(argv[optind + 1], "w");
-	if (!fin || !fout) {
-		usage();
-		perror("open: ");
-		exit(1);
-	}
-
-	if (!check_regcomp(&order_pattern, "order\\s*([0-9]*),"))
-		goto out_order;
-	if (!check_regcomp(&pid_pattern, "pid\\s*([0-9]*),"))
-		goto out_pid;
-	if (!check_regcomp(&tgid_pattern, "tgid\\s*([0-9]*) "))
-		goto out_tgid;
-	if (!check_regcomp(&comm_pattern, "tgid\\s*[0-9]*\\s*\\((.*)\\),\\s*ts"))
-		goto out_comm;
-	if (!check_regcomp(&ts_nsec_pattern, "ts\\s*([0-9]*)\\s*ns,"))
-		goto out_ts;
-	if (!check_regcomp(&free_ts_nsec_pattern, "free_ts\\s*([0-9]*)\\s*ns"))
-		goto out_free_ts;
-
-	fstat(fileno(fin), &st);
-	max_size = st.st_size / 100; /* hack ... */
-
-	list = malloc(max_size * sizeof(*list));
-	buf = malloc(BUF_SIZE);
-	ext_buf = malloc(BUF_SIZE);
-	if (!list || !buf || !ext_buf) {
-		fprintf(stderr, "Out of memory\n");
-		goto out_free;
-	}
-
-	for ( ; ; ) {
-		int buf_len = read_block(buf, ext_buf, BUF_SIZE, fin);
-
-		if (buf_len < 0)
-			break;
-		if (!add_list(buf, buf_len, ext_buf))
-			goto out_free;
-	}
-
-	printf("loaded %d\n", list_size);
-
-	printf("sorting ....\n");
-
-	qsort(list, list_size, sizeof(list[0]), compare_cull_condition);
-
-	printf("culling\n");
-
-	for (i = count = 0; i < list_size; i++) {
-		if (count == 0 ||
-		    compare_cull_condition((void *)(&list[count-1]), (void *)(&list[i])) != 0) {
-			list[count++] = list[i];
-		} else {
-			list[count-1].num += list[i].num;
-			list[count-1].page_num += list[i].page_num;
-		}
-	}
-
-	qsort(list, count, sizeof(list[0]), compare_sort_condition);
-
-	for (i = 0; i < count; i++) {
-		if (cull == 0) {
-			fprintf(fout, "%d times, %d pages, ", list[i].num, list[i].page_num);
-			print_allocator(fout, list[i].allocator);
-			fprintf(fout, ":\n%s\n", list[i].txt);
-		}
-		else {
-			fprintf(fout, "%d times, %d pages",
-					list[i].num, list[i].page_num);
-			if (cull & CULL_PID || filter & FILTER_PID)
-				fprintf(fout, ", PID %d", list[i].pid);
-			if (cull & CULL_TGID || filter & FILTER_TGID)
-				fprintf(fout, ", TGID %d", list[i].pid);
-			if (cull & CULL_COMM || filter & FILTER_COMM)
-				fprintf(fout, ", task_comm_name: %s", list[i].comm);
-			if (cull & CULL_ALLOCATOR) {
-				fprintf(fout, ", ");
-				print_allocator(fout, list[i].allocator);
-			}
-			if (cull & CULL_UNRELEASE)
-				fprintf(fout, " (%s)",
-						list[i].free_ts_nsec ? "UNRELEASED" : "RELEASED");
-			if (cull & CULL_STACKTRACE)
-				fprintf(fout, ":\n%s", list[i].stacktrace);
-			fprintf(fout, "\n");
-		}
-	}
-
-out_free:
-	if (ext_buf)
-		free(ext_buf);
-	if (buf)
-		free(buf);
-	if (list)
-		free(list);
-out_free_ts:
-	regfree(&free_ts_nsec_pattern);
-out_ts:
-	regfree(&ts_nsec_pattern);
-out_comm:
-	regfree(&comm_pattern);
-out_tgid:
-	regfree(&tgid_pattern);
-out_pid:
-	regfree(&pid_pattern);
-out_order:
-	regfree(&order_pattern);
-
-	return 0;
-}
diff --git a/tools/vm/slabinfo-gnuplot.sh b/tools/vm/slabinfo-gnuplot.sh
deleted file mode 100644
index 873a892147e5..000000000000
--- a/tools/vm/slabinfo-gnuplot.sh
+++ /dev/null
@@ -1,268 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0-only
-
-# Sergey Senozhatsky, 2015
-# sergey.senozhatsky.work@gmail.com
-#
-
-
-# This program is intended to plot a `slabinfo -X' stats, collected,
-# for example, using the following command:
-#   while [ 1 ]; do slabinfo -X >> stats; sleep 1; done
-#
-# Use `slabinfo-gnuplot.sh stats' to pre-process collected records
-# and generate graphs (totals, slabs sorted by size, slabs sorted
-# by size).
-#
-# Graphs can be [individually] regenerate with different ranges and
-# size (-r %d,%d and -s %d,%d options).
-#
-# To visually compare N `totals' graphs, do
-# slabinfo-gnuplot.sh -t FILE1-totals FILE2-totals ... FILEN-totals
-#
-
-min_slab_name_size=11
-xmin=0
-xmax=0
-width=1500
-height=700
-mode=preprocess
-
-usage()
-{
-	echo "Usage: [-s W,H] [-r MIN,MAX] [-t|-l] FILE1 [FILE2 ..]"
-	echo "FILEs must contain 'slabinfo -X' samples"
-	echo "-t 			- plot totals for FILE(s)"
-	echo "-l 			- plot slabs stats for FILE(s)"
-	echo "-s %d,%d		- set image width and height"
-	echo "-r %d,%d		- use data samples from a given range"
-}
-
-check_file_exist()
-{
-	if [ ! -f "$1" ]; then
-		echo "File '$1' does not exist"
-		exit 1
-	fi
-}
-
-do_slabs_plotting()
-{
-	local file=$1
-	local out_file
-	local range="every ::$xmin"
-	local xtic=""
-	local xtic_rotate="norotate"
-	local lines=2000000
-	local wc_lines
-
-	check_file_exist "$file"
-
-	out_file=`basename "$file"`
-	if [ $xmax -ne 0 ]; then
-		range="$range::$xmax"
-		lines=$((xmax-xmin))
-	fi
-
-	wc_lines=`cat "$file" | wc -l`
-	if [ $? -ne 0 ] || [ "$wc_lines" -eq 0 ] ; then
-		wc_lines=$lines
-	fi
-
-	if [ "$wc_lines" -lt "$lines" ]; then
-		lines=$wc_lines
-	fi
-
-	if [ $((width / lines)) -gt $min_slab_name_size ]; then
-		xtic=":xtic(1)"
-		xtic_rotate=90
-	fi
-
-gnuplot -p << EOF
-#!/usr/bin/env gnuplot
-
-set terminal png enhanced size $width,$height large
-set output '$out_file.png'
-set autoscale xy
-set xlabel 'samples'
-set ylabel 'bytes'
-set style histogram columnstacked title textcolor lt -1
-set style fill solid 0.15
-set xtics rotate $xtic_rotate
-set key left above Left title reverse
-
-plot "$file" $range u 2$xtic title 'SIZE' with boxes,\
-	'' $range u 3 title 'LOSS' with boxes
-EOF
-
-	if [ $? -eq 0 ]; then
-		echo "$out_file.png"
-	fi
-}
-
-do_totals_plotting()
-{
-	local gnuplot_cmd=""
-	local range="every ::$xmin"
-	local file=""
-
-	if [ $xmax -ne 0 ]; then
-		range="$range::$xmax"
-	fi
-
-	for i in "${t_files[@]}"; do
-		check_file_exist "$i"
-
-		file="$file"`basename "$i"`
-		gnuplot_cmd="$gnuplot_cmd '$i' $range using 1 title\
-			'$i Memory usage' with lines,"
-		gnuplot_cmd="$gnuplot_cmd '' $range using 2 title \
-			'$i Loss' with lines,"
-	done
-
-gnuplot -p << EOF
-#!/usr/bin/env gnuplot
-
-set terminal png enhanced size $width,$height large
-set autoscale xy
-set output '$file.png'
-set xlabel 'samples'
-set ylabel 'bytes'
-set key left above Left title reverse
-
-plot $gnuplot_cmd
-EOF
-
-	if [ $? -eq 0 ]; then
-		echo "$file.png"
-	fi
-}
-
-do_preprocess()
-{
-	local out
-	local lines
-	local in=$1
-
-	check_file_exist "$in"
-
-	# use only 'TOP' slab (biggest memory usage or loss)
-	let lines=3
-	out=`basename "$in"`"-slabs-by-loss"
-	`cat "$in" | grep -A "$lines" 'Slabs sorted by loss' |\
-		grep -E -iv '\-\-|Name|Slabs'\
-		| awk '{print $1" "$4+$2*$3" "$4}' > "$out"`
-	if [ $? -eq 0 ]; then
-		do_slabs_plotting "$out"
-	fi
-
-	let lines=3
-	out=`basename "$in"`"-slabs-by-size"
-	`cat "$in" | grep -A "$lines" 'Slabs sorted by size' |\
-		grep -E -iv '\-\-|Name|Slabs'\
-		| awk '{print $1" "$4" "$4-$2*$3}' > "$out"`
-	if [ $? -eq 0 ]; then
-		do_slabs_plotting "$out"
-	fi
-
-	out=`basename "$in"`"-totals"
-	`cat "$in" | grep "Memory used" |\
-		awk '{print $3" "$7}' > "$out"`
-	if [ $? -eq 0 ]; then
-		t_files[0]=$out
-		do_totals_plotting
-	fi
-}
-
-parse_opts()
-{
-	local opt
-
-	while getopts "tlr::s::h" opt; do
-		case $opt in
-			t)
-				mode=totals
-				;;
-			l)
-				mode=slabs
-				;;
-			s)
-				array=(${OPTARG//,/ })
-				width=${array[0]}
-				height=${array[1]}
-				;;
-			r)
-				array=(${OPTARG//,/ })
-				xmin=${array[0]}
-				xmax=${array[1]}
-				;;
-			h)
-				usage
-				exit 0
-				;;
-			\?)
-				echo "Invalid option: -$OPTARG" >&2
-				exit 1
-				;;
-			:)
-				echo "-$OPTARG requires an argument." >&2
-				exit 1
-				;;
-		esac
-	done
-
-	return $OPTIND
-}
-
-parse_args()
-{
-	local idx=0
-	local p
-
-	for p in "$@"; do
-		case $mode in
-			preprocess)
-				files[$idx]=$p
-				idx=$idx+1
-				;;
-			totals)
-				t_files[$idx]=$p
-				idx=$idx+1
-				;;
-			slabs)
-				files[$idx]=$p
-				idx=$idx+1
-				;;
-		esac
-	done
-}
-
-parse_opts "$@"
-argstart=$?
-parse_args "${@:$argstart}"
-
-if [ ${#files[@]} -eq 0 ] && [ ${#t_files[@]} -eq 0 ]; then
-	usage
-	exit 1
-fi
-
-case $mode in
-	preprocess)
-		for i in "${files[@]}"; do
-			do_preprocess "$i"
-		done
-		;;
-	totals)
-		do_totals_plotting
-		;;
-	slabs)
-		for i in "${files[@]}"; do
-			do_slabs_plotting "$i"
-		done
-		;;
-	*)
-		echo "Unknown mode $mode" >&2
-		usage
-		exit 1
-	;;
-esac
diff --git a/tools/vm/slabinfo.c b/tools/vm/slabinfo.c
deleted file mode 100644
index cfaeaea71042..000000000000
--- a/tools/vm/slabinfo.c
+++ /dev/null
@@ -1,1544 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Slabinfo: Tool to get reports about slabs
- *
- * (C) 2007 sgi, Christoph Lameter
- * (C) 2011 Linux Foundation, Christoph Lameter
- *
- * Compile with:
- *
- * gcc -o slabinfo slabinfo.c
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <strings.h>
-#include <string.h>
-#include <unistd.h>
-#include <stdarg.h>
-#include <getopt.h>
-#include <regex.h>
-#include <errno.h>
-
-#define MAX_SLABS 500
-#define MAX_ALIASES 500
-#define MAX_NODES 1024
-
-struct slabinfo {
-	char *name;
-	int alias;
-	int refs;
-	int aliases, align, cache_dma, cpu_slabs, destroy_by_rcu;
-	unsigned int hwcache_align, object_size, objs_per_slab;
-	unsigned int sanity_checks, slab_size, store_user, trace;
-	int order, poison, reclaim_account, red_zone;
-	unsigned long partial, objects, slabs, objects_partial, objects_total;
-	unsigned long alloc_fastpath, alloc_slowpath;
-	unsigned long free_fastpath, free_slowpath;
-	unsigned long free_frozen, free_add_partial, free_remove_partial;
-	unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill;
-	unsigned long cpuslab_flush, deactivate_full, deactivate_empty;
-	unsigned long deactivate_to_head, deactivate_to_tail;
-	unsigned long deactivate_remote_frees, order_fallback;
-	unsigned long cmpxchg_double_cpu_fail, cmpxchg_double_fail;
-	unsigned long alloc_node_mismatch, deactivate_bypass;
-	unsigned long cpu_partial_alloc, cpu_partial_free;
-	int numa[MAX_NODES];
-	int numa_partial[MAX_NODES];
-} slabinfo[MAX_SLABS];
-
-struct aliasinfo {
-	char *name;
-	char *ref;
-	struct slabinfo *slab;
-} aliasinfo[MAX_ALIASES];
-
-int slabs;
-int actual_slabs;
-int aliases;
-int alias_targets;
-int highest_node;
-
-char buffer[4096];
-
-int show_empty;
-int show_report;
-int show_alias;
-int show_slab;
-int skip_zero = 1;
-int show_numa;
-int show_track;
-int show_first_alias;
-int validate;
-int shrink;
-int show_inverted;
-int show_single_ref;
-int show_totals;
-int sort_size;
-int sort_active;
-int set_debug;
-int show_ops;
-int sort_partial;
-int show_activity;
-int output_lines = -1;
-int sort_loss;
-int extended_totals;
-int show_bytes;
-int unreclaim_only;
-
-/* Debug options */
-int sanity;
-int redzone;
-int poison;
-int tracking;
-int tracing;
-
-int page_size;
-
-regex_t pattern;
-
-static void fatal(const char *x, ...)
-{
-	va_list ap;
-
-	va_start(ap, x);
-	vfprintf(stderr, x, ap);
-	va_end(ap);
-	exit(EXIT_FAILURE);
-}
-
-static void usage(void)
-{
-	printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n"
-		"slabinfo [-aABDefhilLnoPrsStTUvXz1] [N=K] [-dafzput] [slab-regexp]\n"
-		"-a|--aliases           Show aliases\n"
-		"-A|--activity          Most active slabs first\n"
-		"-B|--Bytes             Show size in bytes\n"
-		"-D|--display-active    Switch line format to activity\n"
-		"-e|--empty             Show empty slabs\n"
-		"-f|--first-alias       Show first alias\n"
-		"-h|--help              Show usage information\n"
-		"-i|--inverted          Inverted list\n"
-		"-l|--slabs             Show slabs\n"
-		"-L|--Loss              Sort by loss\n"
-		"-n|--numa              Show NUMA information\n"
-		"-N|--lines=K           Show the first K slabs\n"
-		"-o|--ops               Show kmem_cache_ops\n"
-		"-P|--partial           Sort by number of partial slabs\n"
-		"-r|--report            Detailed report on single slabs\n"
-		"-s|--shrink            Shrink slabs\n"
-		"-S|--Size              Sort by size\n"
-		"-t|--tracking          Show alloc/free information\n"
-		"-T|--Totals            Show summary information\n"
-		"-U|--Unreclaim         Show unreclaimable slabs only\n"
-		"-v|--validate          Validate slabs\n"
-		"-X|--Xtotals           Show extended summary information\n"
-		"-z|--zero              Include empty slabs\n"
-		"-1|--1ref              Single reference\n"
-
-		"\n"
-		"-d  | --debug          Switch off all debug options\n"
-		"-da | --debug=a        Switch on all debug options (--debug=FZPU)\n"
-
-		"\n"
-		"-d[afzput] | --debug=[afzput]\n"
-		"    f | F              Sanity Checks (SLAB_CONSISTENCY_CHECKS)\n"
-		"    z | Z              Redzoning\n"
-		"    p | P              Poisoning\n"
-		"    u | U              Tracking\n"
-		"    t | T              Tracing\n"
-
-		"\nSorting options (--Loss, --Size, --Partial) are mutually exclusive\n"
-	);
-}
-
-static unsigned long read_obj(const char *name)
-{
-	FILE *f = fopen(name, "r");
-
-	if (!f) {
-		buffer[0] = 0;
-		if (errno == EACCES)
-			fatal("%s, Try using superuser\n", strerror(errno));
-	} else {
-		if (!fgets(buffer, sizeof(buffer), f))
-			buffer[0] = 0;
-		fclose(f);
-		if (buffer[strlen(buffer)] == '\n')
-			buffer[strlen(buffer)] = 0;
-	}
-	return strlen(buffer);
-}
-
-
-/*
- * Get the contents of an attribute
- */
-static unsigned long get_obj(const char *name)
-{
-	if (!read_obj(name))
-		return 0;
-
-	return atol(buffer);
-}
-
-static unsigned long get_obj_and_str(const char *name, char **x)
-{
-	unsigned long result = 0;
-	char *p;
-
-	*x = NULL;
-
-	if (!read_obj(name)) {
-		x = NULL;
-		return 0;
-	}
-	result = strtoul(buffer, &p, 10);
-	while (*p == ' ')
-		p++;
-	if (*p)
-		*x = strdup(p);
-	return result;
-}
-
-static void set_obj(struct slabinfo *s, const char *name, int n)
-{
-	char x[100];
-	FILE *f;
-
-	snprintf(x, 100, "%s/%s", s->name, name);
-	f = fopen(x, "w");
-	if (!f)
-		fatal("Cannot write to %s\n", x);
-
-	fprintf(f, "%d\n", n);
-	fclose(f);
-}
-
-static unsigned long read_slab_obj(struct slabinfo *s, const char *name)
-{
-	char x[100];
-	FILE *f;
-	size_t l;
-
-	snprintf(x, 100, "%s/%s", s->name, name);
-	f = fopen(x, "r");
-	if (!f) {
-		buffer[0] = 0;
-		l = 0;
-	} else {
-		l = fread(buffer, 1, sizeof(buffer), f);
-		buffer[l] = 0;
-		fclose(f);
-	}
-	return l;
-}
-
-static unsigned long read_debug_slab_obj(struct slabinfo *s, const char *name)
-{
-	char x[128];
-	FILE *f;
-	size_t l;
-
-	snprintf(x, 128, "/sys/kernel/debug/slab/%s/%s", s->name, name);
-	f = fopen(x, "r");
-	if (!f) {
-		buffer[0] = 0;
-		l = 0;
-	} else {
-		l = fread(buffer, 1, sizeof(buffer), f);
-		buffer[l] = 0;
-		fclose(f);
-	}
-	return l;
-}
-
-/*
- * Put a size string together
- */
-static int store_size(char *buffer, unsigned long value)
-{
-	unsigned long divisor = 1;
-	char trailer = 0;
-	int n;
-
-	if (!show_bytes) {
-		if (value > 1000000000UL) {
-			divisor = 100000000UL;
-			trailer = 'G';
-		} else if (value > 1000000UL) {
-			divisor = 100000UL;
-			trailer = 'M';
-		} else if (value > 1000UL) {
-			divisor = 100;
-			trailer = 'K';
-		}
-	}
-
-	value /= divisor;
-	n = sprintf(buffer, "%ld",value);
-	if (trailer) {
-		buffer[n] = trailer;
-		n++;
-		buffer[n] = 0;
-	}
-	if (divisor != 1) {
-		memmove(buffer + n - 2, buffer + n - 3, 4);
-		buffer[n-2] = '.';
-		n++;
-	}
-	return n;
-}
-
-static void decode_numa_list(int *numa, char *t)
-{
-	int node;
-	int nr;
-
-	memset(numa, 0, MAX_NODES * sizeof(int));
-
-	if (!t)
-		return;
-
-	while (*t == 'N') {
-		t++;
-		node = strtoul(t, &t, 10);
-		if (*t == '=') {
-			t++;
-			nr = strtoul(t, &t, 10);
-			numa[node] = nr;
-			if (node > highest_node)
-				highest_node = node;
-		}
-		while (*t == ' ')
-			t++;
-	}
-}
-
-static void slab_validate(struct slabinfo *s)
-{
-	if (strcmp(s->name, "*") == 0)
-		return;
-
-	set_obj(s, "validate", 1);
-}
-
-static void slab_shrink(struct slabinfo *s)
-{
-	if (strcmp(s->name, "*") == 0)
-		return;
-
-	set_obj(s, "shrink", 1);
-}
-
-int line = 0;
-
-static void first_line(void)
-{
-	if (show_activity)
-		printf("Name                   Objects      Alloc       Free"
-			"   %%Fast Fallb O CmpX   UL\n");
-	else
-		printf("Name                   Objects Objsize           %s "
-			"Slabs/Part/Cpu  O/S O %%Fr %%Ef Flg\n",
-			sort_loss ? " Loss" : "Space");
-}
-
-/*
- * Find the shortest alias of a slab
- */
-static struct aliasinfo *find_one_alias(struct slabinfo *find)
-{
-	struct aliasinfo *a;
-	struct aliasinfo *best = NULL;
-
-	for(a = aliasinfo;a < aliasinfo + aliases; a++) {
-		if (a->slab == find &&
-			(!best || strlen(best->name) < strlen(a->name))) {
-				best = a;
-				if (strncmp(a->name,"kmall", 5) == 0)
-					return best;
-			}
-	}
-	return best;
-}
-
-static unsigned long slab_size(struct slabinfo *s)
-{
-	return 	s->slabs * (page_size << s->order);
-}
-
-static unsigned long slab_activity(struct slabinfo *s)
-{
-	return 	s->alloc_fastpath + s->free_fastpath +
-		s->alloc_slowpath + s->free_slowpath;
-}
-
-static unsigned long slab_waste(struct slabinfo *s)
-{
-	return	slab_size(s) - s->objects * s->object_size;
-}
-
-static void slab_numa(struct slabinfo *s, int mode)
-{
-	int node;
-
-	if (strcmp(s->name, "*") == 0)
-		return;
-
-	if (!highest_node) {
-		printf("\n%s: No NUMA information available.\n", s->name);
-		return;
-	}
-
-	if (skip_zero && !s->slabs)
-		return;
-
-	if (!line) {
-		printf("\n%-21s:", mode ? "NUMA nodes" : "Slab");
-		for(node = 0; node <= highest_node; node++)
-			printf(" %4d", node);
-		printf("\n----------------------");
-		for(node = 0; node <= highest_node; node++)
-			printf("-----");
-		printf("\n");
-	}
-	printf("%-21s ", mode ? "All slabs" : s->name);
-	for(node = 0; node <= highest_node; node++) {
-		char b[20];
-
-		store_size(b, s->numa[node]);
-		printf(" %4s", b);
-	}
-	printf("\n");
-	if (mode) {
-		printf("%-21s ", "Partial slabs");
-		for(node = 0; node <= highest_node; node++) {
-			char b[20];
-
-			store_size(b, s->numa_partial[node]);
-			printf(" %4s", b);
-		}
-		printf("\n");
-	}
-	line++;
-}
-
-static void show_tracking(struct slabinfo *s)
-{
-	printf("\n%s: Kernel object allocation\n", s->name);
-	printf("-----------------------------------------------------------------------\n");
-	if (read_debug_slab_obj(s, "alloc_traces"))
-		printf("%s", buffer);
-	else if (read_slab_obj(s, "alloc_calls"))
-		printf("%s", buffer);
-	else
-		printf("No Data\n");
-
-	printf("\n%s: Kernel object freeing\n", s->name);
-	printf("------------------------------------------------------------------------\n");
-	if (read_debug_slab_obj(s, "free_traces"))
-		printf("%s", buffer);
-	else if (read_slab_obj(s, "free_calls"))
-		printf("%s", buffer);
-	else
-		printf("No Data\n");
-
-}
-
-static void ops(struct slabinfo *s)
-{
-	if (strcmp(s->name, "*") == 0)
-		return;
-
-	if (read_slab_obj(s, "ops")) {
-		printf("\n%s: kmem_cache operations\n", s->name);
-		printf("--------------------------------------------\n");
-		printf("%s", buffer);
-	} else
-		printf("\n%s has no kmem_cache operations\n", s->name);
-}
-
-static const char *onoff(int x)
-{
-	if (x)
-		return "On ";
-	return "Off";
-}
-
-static void slab_stats(struct slabinfo *s)
-{
-	unsigned long total_alloc;
-	unsigned long total_free;
-	unsigned long total;
-
-	if (!s->alloc_slab)
-		return;
-
-	total_alloc = s->alloc_fastpath + s->alloc_slowpath;
-	total_free = s->free_fastpath + s->free_slowpath;
-
-	if (!total_alloc)
-		return;
-
-	printf("\n");
-	printf("Slab Perf Counter       Alloc     Free %%Al %%Fr\n");
-	printf("--------------------------------------------------\n");
-	printf("Fastpath             %8lu %8lu %3lu %3lu\n",
-		s->alloc_fastpath, s->free_fastpath,
-		s->alloc_fastpath * 100 / total_alloc,
-		total_free ? s->free_fastpath * 100 / total_free : 0);
-	printf("Slowpath             %8lu %8lu %3lu %3lu\n",
-		total_alloc - s->alloc_fastpath, s->free_slowpath,
-		(total_alloc - s->alloc_fastpath) * 100 / total_alloc,
-		total_free ? s->free_slowpath * 100 / total_free : 0);
-	printf("Page Alloc           %8lu %8lu %3lu %3lu\n",
-		s->alloc_slab, s->free_slab,
-		s->alloc_slab * 100 / total_alloc,
-		total_free ? s->free_slab * 100 / total_free : 0);
-	printf("Add partial          %8lu %8lu %3lu %3lu\n",
-		s->deactivate_to_head + s->deactivate_to_tail,
-		s->free_add_partial,
-		(s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc,
-		total_free ? s->free_add_partial * 100 / total_free : 0);
-	printf("Remove partial       %8lu %8lu %3lu %3lu\n",
-		s->alloc_from_partial, s->free_remove_partial,
-		s->alloc_from_partial * 100 / total_alloc,
-		total_free ? s->free_remove_partial * 100 / total_free : 0);
-
-	printf("Cpu partial list     %8lu %8lu %3lu %3lu\n",
-		s->cpu_partial_alloc, s->cpu_partial_free,
-		s->cpu_partial_alloc * 100 / total_alloc,
-		total_free ? s->cpu_partial_free * 100 / total_free : 0);
-
-	printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n",
-		s->deactivate_remote_frees, s->free_frozen,
-		s->deactivate_remote_frees * 100 / total_alloc,
-		total_free ? s->free_frozen * 100 / total_free : 0);
-
-	printf("Total                %8lu %8lu\n\n", total_alloc, total_free);
-
-	if (s->cpuslab_flush)
-		printf("Flushes %8lu\n", s->cpuslab_flush);
-
-	total = s->deactivate_full + s->deactivate_empty +
-			s->deactivate_to_head + s->deactivate_to_tail + s->deactivate_bypass;
-
-	if (total) {
-		printf("\nSlab Deactivation             Occurrences %%\n");
-		printf("-------------------------------------------------\n");
-		printf("Slab full                     %7lu  %3lu%%\n",
-			s->deactivate_full, (s->deactivate_full * 100) / total);
-		printf("Slab empty                    %7lu  %3lu%%\n",
-			s->deactivate_empty, (s->deactivate_empty * 100) / total);
-		printf("Moved to head of partial list %7lu  %3lu%%\n",
-			s->deactivate_to_head, (s->deactivate_to_head * 100) / total);
-		printf("Moved to tail of partial list %7lu  %3lu%%\n",
-			s->deactivate_to_tail, (s->deactivate_to_tail * 100) / total);
-		printf("Deactivation bypass           %7lu  %3lu%%\n",
-			s->deactivate_bypass, (s->deactivate_bypass * 100) / total);
-		printf("Refilled from foreign frees   %7lu  %3lu%%\n",
-			s->alloc_refill, (s->alloc_refill * 100) / total);
-		printf("Node mismatch                 %7lu  %3lu%%\n",
-			s->alloc_node_mismatch, (s->alloc_node_mismatch * 100) / total);
-	}
-
-	if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) {
-		printf("\nCmpxchg_double Looping\n------------------------\n");
-		printf("Locked Cmpxchg Double redos   %lu\nUnlocked Cmpxchg Double redos %lu\n",
-			s->cmpxchg_double_fail, s->cmpxchg_double_cpu_fail);
-	}
-}
-
-static void report(struct slabinfo *s)
-{
-	if (strcmp(s->name, "*") == 0)
-		return;
-
-	printf("\nSlabcache: %-15s  Aliases: %2d Order : %2d Objects: %lu\n",
-		s->name, s->aliases, s->order, s->objects);
-	if (s->hwcache_align)
-		printf("** Hardware cacheline aligned\n");
-	if (s->cache_dma)
-		printf("** Memory is allocated in a special DMA zone\n");
-	if (s->destroy_by_rcu)
-		printf("** Slabs are destroyed via RCU\n");
-	if (s->reclaim_account)
-		printf("** Reclaim accounting active\n");
-
-	printf("\nSizes (bytes)     Slabs              Debug                Memory\n");
-	printf("------------------------------------------------------------------------\n");
-	printf("Object : %7d  Total  : %7ld   Sanity Checks : %s  Total: %7ld\n",
-			s->object_size, s->slabs, onoff(s->sanity_checks),
-			s->slabs * (page_size << s->order));
-	printf("SlabObj: %7d  Full   : %7ld   Redzoning     : %s  Used : %7ld\n",
-			s->slab_size, s->slabs - s->partial - s->cpu_slabs,
-			onoff(s->red_zone), s->objects * s->object_size);
-	printf("SlabSiz: %7d  Partial: %7ld   Poisoning     : %s  Loss : %7ld\n",
-			page_size << s->order, s->partial, onoff(s->poison),
-			s->slabs * (page_size << s->order) - s->objects * s->object_size);
-	printf("Loss   : %7d  CpuSlab: %7d   Tracking      : %s  Lalig: %7ld\n",
-			s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user),
-			(s->slab_size - s->object_size) * s->objects);
-	printf("Align  : %7d  Objects: %7d   Tracing       : %s  Lpadd: %7ld\n",
-			s->align, s->objs_per_slab, onoff(s->trace),
-			((page_size << s->order) - s->objs_per_slab * s->slab_size) *
-			s->slabs);
-
-	ops(s);
-	show_tracking(s);
-	slab_numa(s, 1);
-	slab_stats(s);
-}
-
-static void slabcache(struct slabinfo *s)
-{
-	char size_str[20];
-	char dist_str[40];
-	char flags[20];
-	char *p = flags;
-
-	if (strcmp(s->name, "*") == 0)
-		return;
-
-	if (unreclaim_only && s->reclaim_account)
-		return;
-
-	if (actual_slabs == 1) {
-		report(s);
-		return;
-	}
-
-	if (skip_zero && !show_empty && !s->slabs)
-		return;
-
-	if (show_empty && s->slabs)
-		return;
-
-	if (sort_loss == 0)
-		store_size(size_str, slab_size(s));
-	else
-		store_size(size_str, slab_waste(s));
-	snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs,
-						s->partial, s->cpu_slabs);
-
-	if (!line++)
-		first_line();
-
-	if (s->aliases)
-		*p++ = '*';
-	if (s->cache_dma)
-		*p++ = 'd';
-	if (s->hwcache_align)
-		*p++ = 'A';
-	if (s->poison)
-		*p++ = 'P';
-	if (s->reclaim_account)
-		*p++ = 'a';
-	if (s->red_zone)
-		*p++ = 'Z';
-	if (s->sanity_checks)
-		*p++ = 'F';
-	if (s->store_user)
-		*p++ = 'U';
-	if (s->trace)
-		*p++ = 'T';
-
-	*p = 0;
-	if (show_activity) {
-		unsigned long total_alloc;
-		unsigned long total_free;
-
-		total_alloc = s->alloc_fastpath + s->alloc_slowpath;
-		total_free = s->free_fastpath + s->free_slowpath;
-
-		printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d %4ld %4ld\n",
-			s->name, s->objects,
-			total_alloc, total_free,
-			total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0,
-			total_free ? (s->free_fastpath * 100 / total_free) : 0,
-			s->order_fallback, s->order, s->cmpxchg_double_fail,
-			s->cmpxchg_double_cpu_fail);
-	} else {
-		printf("%-21s %8ld %7d %15s %14s %4d %1d %3ld %3ld %s\n",
-			s->name, s->objects, s->object_size, size_str, dist_str,
-			s->objs_per_slab, s->order,
-			s->slabs ? (s->partial * 100) / s->slabs : 100,
-			s->slabs ? (s->objects * s->object_size * 100) /
-				(s->slabs * (page_size << s->order)) : 100,
-			flags);
-	}
-}
-
-/*
- * Analyze debug options. Return false if something is amiss.
- */
-static int debug_opt_scan(char *opt)
-{
-	if (!opt || !opt[0] || strcmp(opt, "-") == 0)
-		return 1;
-
-	if (strcasecmp(opt, "a") == 0) {
-		sanity = 1;
-		poison = 1;
-		redzone = 1;
-		tracking = 1;
-		return 1;
-	}
-
-	for ( ; *opt; opt++)
-		switch (*opt) {
-		case 'F' : case 'f':
-			if (sanity)
-				return 0;
-			sanity = 1;
-			break;
-		case 'P' : case 'p':
-			if (poison)
-				return 0;
-			poison = 1;
-			break;
-
-		case 'Z' : case 'z':
-			if (redzone)
-				return 0;
-			redzone = 1;
-			break;
-
-		case 'U' : case 'u':
-			if (tracking)
-				return 0;
-			tracking = 1;
-			break;
-
-		case 'T' : case 't':
-			if (tracing)
-				return 0;
-			tracing = 1;
-			break;
-		default:
-			return 0;
-		}
-	return 1;
-}
-
-static int slab_empty(struct slabinfo *s)
-{
-	if (s->objects > 0)
-		return 0;
-
-	/*
-	 * We may still have slabs even if there are no objects. Shrinking will
-	 * remove them.
-	 */
-	if (s->slabs != 0)
-		set_obj(s, "shrink", 1);
-
-	return 1;
-}
-
-static void slab_debug(struct slabinfo *s)
-{
-	if (strcmp(s->name, "*") == 0)
-		return;
-
-	if (sanity && !s->sanity_checks) {
-		set_obj(s, "sanity_checks", 1);
-	}
-	if (!sanity && s->sanity_checks) {
-		if (slab_empty(s))
-			set_obj(s, "sanity_checks", 0);
-		else
-			fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name);
-	}
-	if (redzone && !s->red_zone) {
-		if (slab_empty(s))
-			set_obj(s, "red_zone", 1);
-		else
-			fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name);
-	}
-	if (!redzone && s->red_zone) {
-		if (slab_empty(s))
-			set_obj(s, "red_zone", 0);
-		else
-			fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name);
-	}
-	if (poison && !s->poison) {
-		if (slab_empty(s))
-			set_obj(s, "poison", 1);
-		else
-			fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name);
-	}
-	if (!poison && s->poison) {
-		if (slab_empty(s))
-			set_obj(s, "poison", 0);
-		else
-			fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name);
-	}
-	if (tracking && !s->store_user) {
-		if (slab_empty(s))
-			set_obj(s, "store_user", 1);
-		else
-			fprintf(stderr, "%s not empty cannot enable tracking\n", s->name);
-	}
-	if (!tracking && s->store_user) {
-		if (slab_empty(s))
-			set_obj(s, "store_user", 0);
-		else
-			fprintf(stderr, "%s not empty cannot disable tracking\n", s->name);
-	}
-	if (tracing && !s->trace) {
-		if (slabs == 1)
-			set_obj(s, "trace", 1);
-		else
-			fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name);
-	}
-	if (!tracing && s->trace)
-		set_obj(s, "trace", 1);
-}
-
-static void totals(void)
-{
-	struct slabinfo *s;
-
-	int used_slabs = 0;
-	char b1[20], b2[20], b3[20], b4[20];
-	unsigned long long max = 1ULL << 63;
-
-	/* Object size */
-	unsigned long long min_objsize = max, max_objsize = 0, avg_objsize;
-
-	/* Number of partial slabs in a slabcache */
-	unsigned long long min_partial = max, max_partial = 0,
-				avg_partial, total_partial = 0;
-
-	/* Number of slabs in a slab cache */
-	unsigned long long min_slabs = max, max_slabs = 0,
-				avg_slabs, total_slabs = 0;
-
-	/* Size of the whole slab */
-	unsigned long long min_size = max, max_size = 0,
-				avg_size, total_size = 0;
-
-	/* Bytes used for object storage in a slab */
-	unsigned long long min_used = max, max_used = 0,
-				avg_used, total_used = 0;
-
-	/* Waste: Bytes used for alignment and padding */
-	unsigned long long min_waste = max, max_waste = 0,
-				avg_waste, total_waste = 0;
-	/* Number of objects in a slab */
-	unsigned long long min_objects = max, max_objects = 0,
-				avg_objects, total_objects = 0;
-	/* Waste per object */
-	unsigned long long min_objwaste = max,
-				max_objwaste = 0, avg_objwaste,
-				total_objwaste = 0;
-
-	/* Memory per object */
-	unsigned long long min_memobj = max,
-				max_memobj = 0, avg_memobj,
-				total_objsize = 0;
-
-	/* Percentage of partial slabs per slab */
-	unsigned long min_ppart = 100, max_ppart = 0,
-				avg_ppart, total_ppart = 0;
-
-	/* Number of objects in partial slabs */
-	unsigned long min_partobj = max, max_partobj = 0,
-				avg_partobj, total_partobj = 0;
-
-	/* Percentage of partial objects of all objects in a slab */
-	unsigned long min_ppartobj = 100, max_ppartobj = 0,
-				avg_ppartobj, total_ppartobj = 0;
-
-
-	for (s = slabinfo; s < slabinfo + slabs; s++) {
-		unsigned long long size;
-		unsigned long used;
-		unsigned long long wasted;
-		unsigned long long objwaste;
-		unsigned long percentage_partial_slabs;
-		unsigned long percentage_partial_objs;
-
-		if (!s->slabs || !s->objects)
-			continue;
-
-		used_slabs++;
-
-		size = slab_size(s);
-		used = s->objects * s->object_size;
-		wasted = size - used;
-		objwaste = s->slab_size - s->object_size;
-
-		percentage_partial_slabs = s->partial * 100 / s->slabs;
-		if (percentage_partial_slabs > 100)
-			percentage_partial_slabs = 100;
-
-		percentage_partial_objs = s->objects_partial * 100
-							/ s->objects;
-
-		if (percentage_partial_objs > 100)
-			percentage_partial_objs = 100;
-
-		if (s->object_size < min_objsize)
-			min_objsize = s->object_size;
-		if (s->partial < min_partial)
-			min_partial = s->partial;
-		if (s->slabs < min_slabs)
-			min_slabs = s->slabs;
-		if (size < min_size)
-			min_size = size;
-		if (wasted < min_waste)
-			min_waste = wasted;
-		if (objwaste < min_objwaste)
-			min_objwaste = objwaste;
-		if (s->objects < min_objects)
-			min_objects = s->objects;
-		if (used < min_used)
-			min_used = used;
-		if (s->objects_partial < min_partobj)
-			min_partobj = s->objects_partial;
-		if (percentage_partial_slabs < min_ppart)
-			min_ppart = percentage_partial_slabs;
-		if (percentage_partial_objs < min_ppartobj)
-			min_ppartobj = percentage_partial_objs;
-		if (s->slab_size < min_memobj)
-			min_memobj = s->slab_size;
-
-		if (s->object_size > max_objsize)
-			max_objsize = s->object_size;
-		if (s->partial > max_partial)
-			max_partial = s->partial;
-		if (s->slabs > max_slabs)
-			max_slabs = s->slabs;
-		if (size > max_size)
-			max_size = size;
-		if (wasted > max_waste)
-			max_waste = wasted;
-		if (objwaste > max_objwaste)
-			max_objwaste = objwaste;
-		if (s->objects > max_objects)
-			max_objects = s->objects;
-		if (used > max_used)
-			max_used = used;
-		if (s->objects_partial > max_partobj)
-			max_partobj = s->objects_partial;
-		if (percentage_partial_slabs > max_ppart)
-			max_ppart = percentage_partial_slabs;
-		if (percentage_partial_objs > max_ppartobj)
-			max_ppartobj = percentage_partial_objs;
-		if (s->slab_size > max_memobj)
-			max_memobj = s->slab_size;
-
-		total_partial += s->partial;
-		total_slabs += s->slabs;
-		total_size += size;
-		total_waste += wasted;
-
-		total_objects += s->objects;
-		total_used += used;
-		total_partobj += s->objects_partial;
-		total_ppart += percentage_partial_slabs;
-		total_ppartobj += percentage_partial_objs;
-
-		total_objwaste += s->objects * objwaste;
-		total_objsize += s->objects * s->slab_size;
-	}
-
-	if (!total_objects) {
-		printf("No objects\n");
-		return;
-	}
-	if (!used_slabs) {
-		printf("No slabs\n");
-		return;
-	}
-
-	/* Per slab averages */
-	avg_partial = total_partial / used_slabs;
-	avg_slabs = total_slabs / used_slabs;
-	avg_size = total_size / used_slabs;
-	avg_waste = total_waste / used_slabs;
-
-	avg_objects = total_objects / used_slabs;
-	avg_used = total_used / used_slabs;
-	avg_partobj = total_partobj / used_slabs;
-	avg_ppart = total_ppart / used_slabs;
-	avg_ppartobj = total_ppartobj / used_slabs;
-
-	/* Per object object sizes */
-	avg_objsize = total_used / total_objects;
-	avg_objwaste = total_objwaste / total_objects;
-	avg_partobj = total_partobj * 100 / total_objects;
-	avg_memobj = total_objsize / total_objects;
-
-	printf("Slabcache Totals\n");
-	printf("----------------\n");
-	printf("Slabcaches : %15d   Aliases  : %11d->%-3d  Active:    %3d\n",
-			slabs, aliases, alias_targets, used_slabs);
-
-	store_size(b1, total_size);store_size(b2, total_waste);
-	store_size(b3, total_waste * 100 / total_used);
-	printf("Memory used: %15s   # Loss   : %15s   MRatio:%6s%%\n", b1, b2, b3);
-
-	store_size(b1, total_objects);store_size(b2, total_partobj);
-	store_size(b3, total_partobj * 100 / total_objects);
-	printf("# Objects  : %15s   # PartObj: %15s   ORatio:%6s%%\n", b1, b2, b3);
-
-	printf("\n");
-	printf("Per Cache         Average              "
-		"Min              Max            Total\n");
-	printf("---------------------------------------"
-		"-------------------------------------\n");
-
-	store_size(b1, avg_objects);store_size(b2, min_objects);
-	store_size(b3, max_objects);store_size(b4, total_objects);
-	printf("#Objects  %15s  %15s  %15s  %15s\n",
-			b1,	b2,	b3,	b4);
-
-	store_size(b1, avg_slabs);store_size(b2, min_slabs);
-	store_size(b3, max_slabs);store_size(b4, total_slabs);
-	printf("#Slabs    %15s  %15s  %15s  %15s\n",
-			b1,	b2,	b3,	b4);
-
-	store_size(b1, avg_partial);store_size(b2, min_partial);
-	store_size(b3, max_partial);store_size(b4, total_partial);
-	printf("#PartSlab %15s  %15s  %15s  %15s\n",
-			b1,	b2,	b3,	b4);
-	store_size(b1, avg_ppart);store_size(b2, min_ppart);
-	store_size(b3, max_ppart);
-	store_size(b4, total_partial * 100  / total_slabs);
-	printf("%%PartSlab%15s%% %15s%% %15s%% %15s%%\n",
-			b1,	b2,	b3,	b4);
-
-	store_size(b1, avg_partobj);store_size(b2, min_partobj);
-	store_size(b3, max_partobj);
-	store_size(b4, total_partobj);
-	printf("PartObjs  %15s  %15s  %15s  %15s\n",
-			b1,	b2,	b3,	b4);
-
-	store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj);
-	store_size(b3, max_ppartobj);
-	store_size(b4, total_partobj * 100 / total_objects);
-	printf("%% PartObj%15s%% %15s%% %15s%% %15s%%\n",
-			b1,	b2,	b3,	b4);
-
-	store_size(b1, avg_size);store_size(b2, min_size);
-	store_size(b3, max_size);store_size(b4, total_size);
-	printf("Memory    %15s  %15s  %15s  %15s\n",
-			b1,	b2,	b3,	b4);
-
-	store_size(b1, avg_used);store_size(b2, min_used);
-	store_size(b3, max_used);store_size(b4, total_used);
-	printf("Used      %15s  %15s  %15s  %15s\n",
-			b1,	b2,	b3,	b4);
-
-	store_size(b1, avg_waste);store_size(b2, min_waste);
-	store_size(b3, max_waste);store_size(b4, total_waste);
-	printf("Loss      %15s  %15s  %15s  %15s\n",
-			b1,	b2,	b3,	b4);
-
-	printf("\n");
-	printf("Per Object        Average              "
-		"Min              Max\n");
-	printf("---------------------------------------"
-		"--------------------\n");
-
-	store_size(b1, avg_memobj);store_size(b2, min_memobj);
-	store_size(b3, max_memobj);
-	printf("Memory    %15s  %15s  %15s\n",
-			b1,	b2,	b3);
-	store_size(b1, avg_objsize);store_size(b2, min_objsize);
-	store_size(b3, max_objsize);
-	printf("User      %15s  %15s  %15s\n",
-			b1,	b2,	b3);
-
-	store_size(b1, avg_objwaste);store_size(b2, min_objwaste);
-	store_size(b3, max_objwaste);
-	printf("Loss      %15s  %15s  %15s\n",
-			b1,	b2,	b3);
-}
-
-static void sort_slabs(void)
-{
-	struct slabinfo *s1,*s2;
-
-	for (s1 = slabinfo; s1 < slabinfo + slabs; s1++) {
-		for (s2 = s1 + 1; s2 < slabinfo + slabs; s2++) {
-			int result;
-
-			if (sort_size) {
-				if (slab_size(s1) == slab_size(s2))
-					result = strcasecmp(s1->name, s2->name);
-				else
-					result = slab_size(s1) < slab_size(s2);
-			} else if (sort_active) {
-				if (slab_activity(s1) == slab_activity(s2))
-					result = strcasecmp(s1->name, s2->name);
-				else
-					result = slab_activity(s1) < slab_activity(s2);
-			} else if (sort_loss) {
-				if (slab_waste(s1) == slab_waste(s2))
-					result = strcasecmp(s1->name, s2->name);
-				else
-					result = slab_waste(s1) < slab_waste(s2);
-			} else if (sort_partial) {
-				if (s1->partial == s2->partial)
-					result = strcasecmp(s1->name, s2->name);
-				else
-					result = s1->partial < s2->partial;
-			} else
-				result = strcasecmp(s1->name, s2->name);
-
-			if (show_inverted)
-				result = -result;
-
-			if (result > 0) {
-				struct slabinfo t;
-
-				memcpy(&t, s1, sizeof(struct slabinfo));
-				memcpy(s1, s2, sizeof(struct slabinfo));
-				memcpy(s2, &t, sizeof(struct slabinfo));
-			}
-		}
-	}
-}
-
-static void sort_aliases(void)
-{
-	struct aliasinfo *a1,*a2;
-
-	for (a1 = aliasinfo; a1 < aliasinfo + aliases; a1++) {
-		for (a2 = a1 + 1; a2 < aliasinfo + aliases; a2++) {
-			char *n1, *n2;
-
-			n1 = a1->name;
-			n2 = a2->name;
-			if (show_alias && !show_inverted) {
-				n1 = a1->ref;
-				n2 = a2->ref;
-			}
-			if (strcasecmp(n1, n2) > 0) {
-				struct aliasinfo t;
-
-				memcpy(&t, a1, sizeof(struct aliasinfo));
-				memcpy(a1, a2, sizeof(struct aliasinfo));
-				memcpy(a2, &t, sizeof(struct aliasinfo));
-			}
-		}
-	}
-}
-
-static void link_slabs(void)
-{
-	struct aliasinfo *a;
-	struct slabinfo *s;
-
-	for (a = aliasinfo; a < aliasinfo + aliases; a++) {
-
-		for (s = slabinfo; s < slabinfo + slabs; s++)
-			if (strcmp(a->ref, s->name) == 0) {
-				a->slab = s;
-				s->refs++;
-				break;
-			}
-		if (s == slabinfo + slabs)
-			fatal("Unresolved alias %s\n", a->ref);
-	}
-}
-
-static void alias(void)
-{
-	struct aliasinfo *a;
-	char *active = NULL;
-
-	sort_aliases();
-	link_slabs();
-
-	for(a = aliasinfo; a < aliasinfo + aliases; a++) {
-
-		if (!show_single_ref && a->slab->refs == 1)
-			continue;
-
-		if (!show_inverted) {
-			if (active) {
-				if (strcmp(a->slab->name, active) == 0) {
-					printf(" %s", a->name);
-					continue;
-				}
-			}
-			printf("\n%-12s <- %s", a->slab->name, a->name);
-			active = a->slab->name;
-		}
-		else
-			printf("%-15s -> %s\n", a->name, a->slab->name);
-	}
-	if (active)
-		printf("\n");
-}
-
-
-static void rename_slabs(void)
-{
-	struct slabinfo *s;
-	struct aliasinfo *a;
-
-	for (s = slabinfo; s < slabinfo + slabs; s++) {
-		if (*s->name != ':')
-			continue;
-
-		if (s->refs > 1 && !show_first_alias)
-			continue;
-
-		a = find_one_alias(s);
-
-		if (a)
-			s->name = a->name;
-		else {
-			s->name = "*";
-			actual_slabs--;
-		}
-	}
-}
-
-static int slab_mismatch(char *slab)
-{
-	return regexec(&pattern, slab, 0, NULL, 0);
-}
-
-static void read_slab_dir(void)
-{
-	DIR *dir;
-	struct dirent *de;
-	struct slabinfo *slab = slabinfo;
-	struct aliasinfo *alias = aliasinfo;
-	char *p;
-	char *t;
-	int count;
-
-	if (chdir("/sys/kernel/slab") && chdir("/sys/slab"))
-		fatal("SYSFS support for SLUB not active\n");
-
-	dir = opendir(".");
-	while ((de = readdir(dir))) {
-		if (de->d_name[0] == '.' ||
-			(de->d_name[0] != ':' && slab_mismatch(de->d_name)))
-				continue;
-		switch (de->d_type) {
-		   case DT_LNK:
-			alias->name = strdup(de->d_name);
-			count = readlink(de->d_name, buffer, sizeof(buffer)-1);
-
-			if (count < 0)
-				fatal("Cannot read symlink %s\n", de->d_name);
-
-			buffer[count] = 0;
-			p = buffer + count;
-			while (p > buffer && p[-1] != '/')
-				p--;
-			alias->ref = strdup(p);
-			alias++;
-			break;
-		   case DT_DIR:
-			if (chdir(de->d_name))
-				fatal("Unable to access slab %s\n", slab->name);
-			slab->name = strdup(de->d_name);
-			slab->alias = 0;
-			slab->refs = 0;
-			slab->aliases = get_obj("aliases");
-			slab->align = get_obj("align");
-			slab->cache_dma = get_obj("cache_dma");
-			slab->cpu_slabs = get_obj("cpu_slabs");
-			slab->destroy_by_rcu = get_obj("destroy_by_rcu");
-			slab->hwcache_align = get_obj("hwcache_align");
-			slab->object_size = get_obj("object_size");
-			slab->objects = get_obj("objects");
-			slab->objects_partial = get_obj("objects_partial");
-			slab->objects_total = get_obj("objects_total");
-			slab->objs_per_slab = get_obj("objs_per_slab");
-			slab->order = get_obj("order");
-			slab->partial = get_obj("partial");
-			slab->partial = get_obj_and_str("partial", &t);
-			decode_numa_list(slab->numa_partial, t);
-			free(t);
-			slab->poison = get_obj("poison");
-			slab->reclaim_account = get_obj("reclaim_account");
-			slab->red_zone = get_obj("red_zone");
-			slab->sanity_checks = get_obj("sanity_checks");
-			slab->slab_size = get_obj("slab_size");
-			slab->slabs = get_obj_and_str("slabs", &t);
-			decode_numa_list(slab->numa, t);
-			free(t);
-			slab->store_user = get_obj("store_user");
-			slab->trace = get_obj("trace");
-			slab->alloc_fastpath = get_obj("alloc_fastpath");
-			slab->alloc_slowpath = get_obj("alloc_slowpath");
-			slab->free_fastpath = get_obj("free_fastpath");
-			slab->free_slowpath = get_obj("free_slowpath");
-			slab->free_frozen= get_obj("free_frozen");
-			slab->free_add_partial = get_obj("free_add_partial");
-			slab->free_remove_partial = get_obj("free_remove_partial");
-			slab->alloc_from_partial = get_obj("alloc_from_partial");
-			slab->alloc_slab = get_obj("alloc_slab");
-			slab->alloc_refill = get_obj("alloc_refill");
-			slab->free_slab = get_obj("free_slab");
-			slab->cpuslab_flush = get_obj("cpuslab_flush");
-			slab->deactivate_full = get_obj("deactivate_full");
-			slab->deactivate_empty = get_obj("deactivate_empty");
-			slab->deactivate_to_head = get_obj("deactivate_to_head");
-			slab->deactivate_to_tail = get_obj("deactivate_to_tail");
-			slab->deactivate_remote_frees = get_obj("deactivate_remote_frees");
-			slab->order_fallback = get_obj("order_fallback");
-			slab->cmpxchg_double_cpu_fail = get_obj("cmpxchg_double_cpu_fail");
-			slab->cmpxchg_double_fail = get_obj("cmpxchg_double_fail");
-			slab->cpu_partial_alloc = get_obj("cpu_partial_alloc");
-			slab->cpu_partial_free = get_obj("cpu_partial_free");
-			slab->alloc_node_mismatch = get_obj("alloc_node_mismatch");
-			slab->deactivate_bypass = get_obj("deactivate_bypass");
-			chdir("..");
-			if (slab->name[0] == ':')
-				alias_targets++;
-			slab++;
-			break;
-		   default :
-			fatal("Unknown file type %lx\n", de->d_type);
-		}
-	}
-	closedir(dir);
-	slabs = slab - slabinfo;
-	actual_slabs = slabs;
-	aliases = alias - aliasinfo;
-	if (slabs > MAX_SLABS)
-		fatal("Too many slabs\n");
-	if (aliases > MAX_ALIASES)
-		fatal("Too many aliases\n");
-}
-
-static void output_slabs(void)
-{
-	struct slabinfo *slab;
-	int lines = output_lines;
-
-	for (slab = slabinfo; (slab < slabinfo + slabs) &&
-			lines != 0; slab++) {
-
-		if (slab->alias)
-			continue;
-
-		if (lines != -1)
-			lines--;
-
-		if (show_numa)
-			slab_numa(slab, 0);
-		else if (show_track)
-			show_tracking(slab);
-		else if (validate)
-			slab_validate(slab);
-		else if (shrink)
-			slab_shrink(slab);
-		else if (set_debug)
-			slab_debug(slab);
-		else if (show_ops)
-			ops(slab);
-		else if (show_slab)
-			slabcache(slab);
-		else if (show_report)
-			report(slab);
-	}
-}
-
-static void _xtotals(char *heading, char *underline,
-		     int loss, int size, int partial)
-{
-	printf("%s%s", heading, underline);
-	line = 0;
-	sort_loss = loss;
-	sort_size = size;
-	sort_partial = partial;
-	sort_slabs();
-	output_slabs();
-}
-
-static void xtotals(void)
-{
-	char *heading, *underline;
-
-	totals();
-
-	link_slabs();
-	rename_slabs();
-
-	heading = "\nSlabs sorted by size\n";
-	underline = "--------------------\n";
-	_xtotals(heading, underline, 0, 1, 0);
-
-	heading = "\nSlabs sorted by loss\n";
-	underline = "--------------------\n";
-	_xtotals(heading, underline, 1, 0, 0);
-
-	heading = "\nSlabs sorted by number of partial slabs\n";
-	underline = "---------------------------------------\n";
-	_xtotals(heading, underline, 0, 0, 1);
-
-	printf("\n");
-}
-
-struct option opts[] = {
-	{ "aliases", no_argument, NULL, 'a' },
-	{ "activity", no_argument, NULL, 'A' },
-	{ "Bytes", no_argument, NULL, 'B'},
-	{ "debug", optional_argument, NULL, 'd' },
-	{ "display-activity", no_argument, NULL, 'D' },
-	{ "empty", no_argument, NULL, 'e' },
-	{ "first-alias", no_argument, NULL, 'f' },
-	{ "help", no_argument, NULL, 'h' },
-	{ "inverted", no_argument, NULL, 'i'},
-	{ "slabs", no_argument, NULL, 'l' },
-	{ "Loss", no_argument, NULL, 'L'},
-	{ "numa", no_argument, NULL, 'n' },
-	{ "lines", required_argument, NULL, 'N'},
-	{ "ops", no_argument, NULL, 'o' },
-	{ "partial", no_argument, NULL, 'p'},
-	{ "report", no_argument, NULL, 'r' },
-	{ "shrink", no_argument, NULL, 's' },
-	{ "Size", no_argument, NULL, 'S'},
-	{ "tracking", no_argument, NULL, 't'},
-	{ "Totals", no_argument, NULL, 'T'},
-	{ "Unreclaim", no_argument, NULL, 'U'},
-	{ "validate", no_argument, NULL, 'v' },
-	{ "Xtotals", no_argument, NULL, 'X'},
-	{ "zero", no_argument, NULL, 'z' },
-	{ "1ref", no_argument, NULL, '1'},
-	{ NULL, 0, NULL, 0 }
-};
-
-int main(int argc, char *argv[])
-{
-	int c;
-	int err;
-	char *pattern_source;
-
-	page_size = getpagesize();
-
-	while ((c = getopt_long(argc, argv, "aABd::DefhilLnN:oPrsStTUvXz1",
-						opts, NULL)) != -1)
-		switch (c) {
-		case 'a':
-			show_alias = 1;
-			break;
-		case 'A':
-			sort_active = 1;
-			break;
-		case 'B':
-			show_bytes = 1;
-			break;
-		case 'd':
-			set_debug = 1;
-			if (!debug_opt_scan(optarg))
-				fatal("Invalid debug option '%s'\n", optarg);
-			break;
-		case 'D':
-			show_activity = 1;
-			break;
-		case 'e':
-			show_empty = 1;
-			break;
-		case 'f':
-			show_first_alias = 1;
-			break;
-		case 'h':
-			usage();
-			return 0;
-		case 'i':
-			show_inverted = 1;
-			break;
-		case 'l':
-			show_slab = 1;
-			break;
-		case 'L':
-			sort_loss = 1;
-			break;
-		case 'n':
-			show_numa = 1;
-			break;
-		case 'N':
-			if (optarg) {
-				output_lines = atoi(optarg);
-				if (output_lines < 1)
-					output_lines = 1;
-			}
-			break;
-		case 'o':
-			show_ops = 1;
-			break;
-		case 'r':
-			show_report = 1;
-			break;
-		case 'P':
-			sort_partial = 1;
-			break;
-		case 's':
-			shrink = 1;
-			break;
-		case 'S':
-			sort_size = 1;
-			break;
-		case 't':
-			show_track = 1;
-			break;
-		case 'T':
-			show_totals = 1;
-			break;
-		case 'U':
-			unreclaim_only = 1;
-			break;
-		case 'v':
-			validate = 1;
-			break;
-		case 'X':
-			if (output_lines == -1)
-				output_lines = 1;
-			extended_totals = 1;
-			show_bytes = 1;
-			break;
-		case 'z':
-			skip_zero = 0;
-			break;
-		case '1':
-			show_single_ref = 1;
-			break;
-		default:
-			fatal("%s: Invalid option '%c'\n", argv[0], optopt);
-
-	}
-
-	if (!show_slab && !show_alias && !show_track && !show_report
-		&& !validate && !shrink && !set_debug && !show_ops)
-			show_slab = 1;
-
-	if (argc > optind)
-		pattern_source = argv[optind];
-	else
-		pattern_source = ".*";
-
-	err = regcomp(&pattern, pattern_source, REG_ICASE|REG_NOSUB);
-	if (err)
-		fatal("%s: Invalid pattern '%s' code %d\n",
-			argv[0], pattern_source, err);
-	read_slab_dir();
-	if (show_alias) {
-		alias();
-	} else if (extended_totals) {
-		xtotals();
-	} else if (show_totals) {
-		totals();
-	} else {
-		link_slabs();
-		rename_slabs();
-		sort_slabs();
-		output_slabs();
-	}
-	return 0;
-}