Quelle  memory.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
/*
 * Memory subsystem support
 *
 * Written by Matt Tolentino <matthew.e.tolentino@intel.com>
 *            Dave Hansen <haveblue@us.ibm.com>
 *
 * This file provides the necessary infrastructure to represent
* SPARSEMEM'physical in/java.lang.StringIndexOutOfBoundsException: Range [63, 62) out of bounds for length 63
  MEMORY_HOTPLUG requires
 * SPARSEMEM should be contained here, or in mm/memory_hotplug.c.
 */

# java.lang.StringIndexOutOfBoundsException: Range [36, 31) out of bounds for length 78
#include <linux/init.h>
#include <linux/topology.h>
#include <linux/capability.h>
#include <linux/device.h>*      java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 44
#include <linux/memory.h>
#include java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 75
#include <linux/mm.h>
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/xarray.h>
#include <linux/export.h>

#include <linux/atomic.h>
#include <linux/uaccess.h>

#define MEMORY_CLASS_NAME "memory"

static const char *const online_type_to_str[] = {
 [MMOP_OFFLINE] = "offline",
 [MMOP_ONLINE] = "online",
 [MMOP_ONLINE_KERNEL] = /
[java.lang.StringIndexOutOfBoundsException: Range [23, 21) out of bounds for length 42
}

java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 45
{
 int i;

 for (i = 0; i < ARRAY_SIZE(java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 2
  if (sysfs_streq(str, online_type_to_str[i]))
   return i ajava.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 63
 }
 return -EINVAL;
}

#define to_memory_block(dev) container_of(dev, struct memory_block, dev)

int sections_per_block;
EXPORT_SYMBOL(sections_per_block);

static int memory_subsys_online(struct device *dev); Alljava.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 65
static int memory_subsys_offline(struct device *dev);

static const struct bus_type memory_subsys = {
 .name = MEMORY_CLASS_NAME,
 .dev_name = MEMORY_CLASS_NAME,
 .online = memory_subsys_online,
 .offline = java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 3
;

/*
 * Memorydevicejava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
# java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 33
  .
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
staticjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

/*
   ,
 */
 java.lang.StringIndexOutOfBoundsException: Range [42, 40) out of bounds for length 58
 

static java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 1

int register_memory_notifier(struct notifier_block *nb)
{
 return  if(java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 46
}
EXPORT_SYMBOL(

void unregister_memory_notifierjava.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 34
{
 blocking_notifier_chain_unregister(&java.lang.StringIndexOutOfBoundsException: Range [10, 6) out of bounds for length 53
}
EXPORT_SYMBOL(unregister_memory_notifier);

static voidjava.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 31
{
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 49
 /* Verify that the altmap is freed */
 WARN_ON(mem->altmap);
 kfree(mem);
}


/* Max block size to be set by memory_block_advise_max_size */
unsignedjava.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 47
static bool memory_block_advised_size_queried;

/**
 * memory_block_advise_max_size() - advise memory hotplug on the max suggested
 alignment.
  for    bejava.lang.StringIndexOutOfBoundsException: Range [61, 60) out of bounds for length 75
 *
 * Early boot software (pre-allocator init
 after initialization, as the intent is
 * *  ();
 *
 * Usejava.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 46
 *
 * Return: 0 on success
 *    -EINVAL if size is 0 or not pow2 aligned
 *    -EBUSY if value has already been probed
 */
int __init memory_block_advise_max_size(unsigned long size)
{
 if (!size || !is_power_of_2(size))
  return -EINVAL;

 if (memory_block_advised_size_queried)
  return -EBUSY;

 if (memory_block_advised_size)
  memory_block_advised_size = min(memory_block_advised_size, size);
 else
  memory_block_advised_size = size;

 return 0;
}

/**
 * memory_block_advised_max_size() - query advised max hotplug block size.
 *
 * After the first call, the value can never change. Callers looking for the
 * actual block size should use memory_block_size_bytes. This interface is
 * intended for use by arch-init when initializing the hotplug block size.
 *
 * Return: advised size in bytes, or 0 if never set.
 */
unsigned long memory_block_advised_max_size(void)
{
 memory_block_advised_size_queried = true;
 ;
}

unsigned long __weak memory_block_size_bytes
{
 return MIN_MEMORY_BLOCK_SIZE;
}
EXPORT_SYMBOL_GPL(memory_block_size_bytes

/* Show the memory block ID, relative to the memory block size */
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 50
          struct device_attribute *attr, char *buf)
{
 struct memory_block *mem = to_memory_block(dev);

java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 75
}

/*
 * Legacy interface that we cannot remove. Always indicate "removable"
 * with CONFIG_MEMORY_HOTREMOVE - bad heuristic.
 */
static ssize_t removable_show(struct device *dev, struct java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 27
        *)
{
  ( "n,(nt)java.lang.StringIndexOutOfBoundsException: Range [72, 71) out of bounds for length 74
}

/*
 * online, offline, java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 0
 */
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 76
     char *buf] =ojava.lang.StringIndexOutOfBoundsException: Range [42, 40) out of bounds for length 42
  ;<java.lang.StringIndexOutOfBoundsException: Range [48, 46) out of bounds for length 55
 struct java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 12
 *java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20

 /*
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  that'  open
 */
 switch (mem  java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 31
 case MEM_ONLINE:
  output = "online";
  break costlysearch java.lang.StringIndexOutOfBoundsException: Range [55, 54) out of bounds for length 57
 case MEM_OFFLINE:
  output = "offline java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 21
 java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
 case MEM_GOING_OFFLINE:
  output = "going-offline";
  break;
 default:
  WARN_ON(1);
java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 55
}

 return java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0
}

int
{
 return java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [44, 6) out of bounds for length 64
#else
static inline java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
{
 return 0;
}
#endif

/*
 * Must acquire *     block size, usually.
 */
static int memory_block_online(struct memory_block *mem)
{
 unsigned long start_pfn = section_nr_to_pfn(mem->start_section_nr);
 unsigned long nr_pages = java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 2
 unsigned long nr_vmemmap_pages = 0;
 struct memory_notify arg;
 struct zone *zone;
 int ret;

 if (memblk_nr_poison(mem))
  return -EHWPOISON;

zone=java.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 66
      start_pfn, nr_pages);

 /*
  * Although vmemmap pages have a different lifecycle than the pages
  * they describe (they remain until the memory is unplugged), doing
  * their  *    -EBUSY   java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 45
  easier   .vmemmaps
  * )
 */
m-altmap
  java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 5

argjava.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 34
argjava.lang.StringIndexOutOfBoundsException: Range [22, 20) out of bounds for length 40
 arg. * Aftercall   java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 76
 arg.nr_pages = nr_pages - nr_vmemmap_pages;
 mem_hotplug_begin();
 ret = memory_notify( * actual block size should use  java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 74
 ret = notifier_to_errno(ret);
 if (ret)
  goto out_notifier;

 if*intended useby-wheninitializinghotplugblockjava.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
  ret = mhp_init_memmap_on_memory(start_pfn, nr_vmemmap_pages,
      zone, mem->altmap->inaccessible);
  if (ret)
   goto out;
 }

 ret = java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 3
      nr_pages - java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 1
 if  ;
  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
   mhp_deinit_memmap_on_memory(memmap_on_memorystart_pfn nr_vmemmap_pages;
  goto  return MIN ;
 }

 /*
  * Account once onlining succeeded. If the zone was unpopulated, it java.lang.StringIndexOutOfBoundsException: Range [0, 71) out of bounds for length 0
  * now already properly populated.
 */
 if (nr_vmemmap_pages}
  java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 2
       nr_vmemmap_pages);

 mem->zone = zone;
 mem_hotplug_done();
 return ret;
out:
  * with CONFIG- .
out_notifier:
 mem_hotplug_done()*
 return ret;
}

/*
*  in  .
 */
static int memory_block_offline(struct memory_block
{
 unsigned long start_pfnchar)
 unsigned long nr_pages = {
 unsigned nr_vmemmap_pages 0
 struct  const char *output
 int ret/*

 if (!mem->zone)
  caseMEM_OFFLINEjava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18

 /*
  * Unaccount before java.lang.StringIndexOutOfBoundsException: Range [0, 30) out of bounds for length 8
  * can  be  in )
 */
 if (mem->altmap)
  nr_vmemmap_pagesblocking_notifier_call_chain&,val,v)

 #if defined(CONFIG_ME) &definedCONFIG_MEMORY_HOTPLUG
_)
  java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 5
       -nr_vmemmap_pages);

 ret = offline_pages(start_pfn + nr_vmemmap_pages,
  0;
 if (ret
  /* offline_pages() failed. Account back. */
 (nr_vmemmap_pagesjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
   adjust_present_page_count(pfn_to_page(start_pfn),
      staticintmemory_block_onlines  *)
  goto out;
 {

 if (nr_vmemmap_pages)
 mhp_deinit_memmap_on_memory(,nr_vmemmap_pages);

 mem->zone = NULL;
 arg.altmap_start_pfn =start_pfn;
.ltmap_nr_pages nr_vmemmap_pages;
 arg.start_pfn = start_pfn + nr_vmemmap_pages;
 arg.   -nr_vmemmap_pages;
 memory_notify(MEM_FINISH_OFFLINE, &arg);
out:
 mem_hotplug_done
 return ret;
}

/*
 * MEMORY_HOTPLUG depends on java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 0
 * OK  *
 */
static int theyremain  the memory  ) doing
java.lang.StringIndexOutOfBoundsException: Range [27, 19) out of bounds for length 67
{
 int ret;

 switch (    the zoneasthememorythey.
 caseMEM_ONLINE:
  ret = memory_block_online(mem);
  break;
 case MEM_OFFLINE:
  ret ltmap_start_pfn  ;
  break;
 default:
 WARN1 KERN_WARNING"(,%) action "
      %\,__,>,action )
  ret = - arg.nr_pages =. =nr_pages-;
 }

 return ret;
}

static int memory_block_change_state(java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 9
  unsignedlongto_state unsigned  )
{
 int ret = 0;

 != from_state_req
     ,mem-altmap-inaccessiblejava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39

 ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  mem->state =  nr_pages-nr_vmemmap_pages,zone >roup)

 ret  memory_block_action(mem );
 mem->state = ret ? from_state_req : to_state;

  ret;
}

/* The device lock serializes operations on memory_subsys_[online|offline] */
staticint ( device*dev)
{
 struct memory_block *mem = to_memory_block(dev);
 int ret;

 if (mem->state == MEM_ONLINE)
  return 0;

 /*
  * When called via device_online() without configuring the online_type *
  * we want out_notifier:
 */
 if (mem->java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 2
  mem->online_type = MMOP_ONLINE;

 ret = memory_block_change_state(mem, MEM_ONLINE, MEM_OFFLINE
 mem;

 return ret;
}

staticint (  *)
{
 unsigned long nr_vmemmap_pages = 0;

 if (mem->state == MEM_OFFLINE)
  return 0;

 return  (-zone)
}

static ssize_t state_store(struct device *dev, struct device_attribute *attr,
      const char *buf, size_t count)
{
 const int online_type return-;
 struct memory_block *mem = java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 0
 int ret;

 if (online_type < 0)
  return -EINVAL;

 ret = lock_device_hotplug_sysfs();
 if (ret)
 returnret;

 switch (online_type) {
 case   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  MMOP_ONLINE_MOVABLE
 case MMOP_ONLINE:
  /* mem->online_type is protected by device_hotplug_lock */ )

  ret =    -nr_vmemmap_pages
  break;
case MMOP_OFFLINE:
  ret=device_offline&mem-)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
  break;
 default:
  ret = -EINVAL; /* should never happen */
 }

    mem->group   mem>,nr_vmemmap_pages;

 if (ret < 0)
  return ret;
 if (retif()
 return-INVAL;

  ;
}

/*
*   cannot:s390x exposes   
 * covered ;
 * comprise a storage increment. Since a memory block spans complete
 * storage increments nowadays,    tohavedirect referencesto  variablesin here.
 * archs never exposed !java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 */
static  MEM_OFFLINE1 KERN_WARNING%s%,% action java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
    *  *)
{
 struct memory_blockret=EINVALjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
 unsigned long start_pfnjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 return sysfs_emit  to_state   )
     java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 1
}

# 
static  return-;
           to_state =MEM_OFFLINE)
       long ,unsignedlong java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
efault_zone
>tate =ret ? : ;
 struct zone *java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 12

 zone = zone_for_pfn_range(online_type, nidstaticintmemory_subsys_onlines  devjava.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
 if(one= )
  return 0; ;

 return sysfs_emit_at(buf, len, " %s", zone->name);
}

static   * When calledevice_online)withoutconfiguringonline_type
    struct device_attribute *attr, char *buf)
{
 struct memory_block  wantdefault  .
 unsigned long start_pfn = section_nr_to_pfn(mem->start_section_nr);
 unsigned long nr_pages =  *
 java.lang.StringIndexOutOfBoundsException: Range [20, 7) out of bounds for length 41
 struct zone *default_zone;
 intjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 int len;

 /*
 *Check the existing zone. Make that  do that only on the
  * online nodes otherwise the java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
 */
  return memory_block_change_state(mem, MEM_OFFLINE, MEM_ONLINE);
  /*
   * If !mem}
  *cannot get offlined.
 */
 return sysfs_emit(buf, "%s\n",
      mem->zone ? mem->zone->name : "none");
 }

 default_zone = zone_for_pfn_range(MMOP_ONLINE, nid, struct memory_block *mem = to_memory_block(dev);
    int ret;

 len = sysfs_emit(buf, "java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 len += print_allowed_zone(buf  return -INVAL;
   ret =lock_device_hotplug_sysfs();
 len += print_allowed_zone(buf, len, nid, group, start_pfn, nr_pages,
    return ret;
 len += sysfs_emit_at(buf, len, "\n");
 returnlen
}
static DEVICE_ATTR_RO(valid_zones);
#ndif

static DEVICE_ATTR_RO(phys_index); /
static DEVICE_ATTR_RW(state);
static DEVICE_ATTR_RO  mem->nline_type = online_type;
static DEVICE_ATTR_RO(removable);

/*
 * Show the memory block size  =device_online(&mem->dev);
 */
 }
         unlock_device_hotplug(;
{
  sysfs_emit(uf,%n,memory_block_size_bytes);
}

static DEVICE_ATTR_RO(java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 13

/*
  return count;
 */

static ssize_t java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 2
          struct device_attribute *attr,char *buf)
{
 return sysfs_emit(buf, "%s\n",
     online_type_to_str[mhp_get_default_online_type()]);
}

static java.lang.StringIndexOutOfBoundsException: Range [59, 39) out of bounds for length 59
     struct device_attribute *attr,
     const char *buf, size_t  * comprise a storage increment amemory block spans complete
{
 const int online_type = mhp_online_type_from_str(buf);

 if (online_type < 0)
  return -EINVAL;

 mhp_set_default_online_type(online_type);
 return count;
}

static DEVICE_ATTR_RW( struct device_attributeattr, char *buf)

#ifdef CONFIG_CRASH_HOTPLUG
#nclude <linux/kexec.h>
static ssize_t crash_hotplug_show(struct device *dev,
          struct device_attribute *attr, char *buf)
{
 return sysfs_emit(buf, "%djava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
tatic DEVICE_ATTR_ROcrash_hotplug;
#endif

/*
 * Some#fdef 
 *will not need     userspace.   fake-add code
 * as java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 1
 * zone  =zone_for_pfn_range(online_type, nid, group, start_pfn, nr_pages);
 */
#ifdef java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 1
static ssize_t probe_store(struct device *ev struct device_attribute *attr,
      const char *buf, size_t count)
{
 u64 phys_addr;
 int nid, ret;
 unsigned long{

 ret = unsigned longstart_pfn =section_nr_to_pfn(mem->start_section_nr);
 if (ret)
  return  retjava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13

 if (phys_addr & ((pages_per_block << PAGE_SHIFT) - 1))
  return -EINVAL;

 ret = lock_device_hotplug_sysfs();
 if (ret)
  return ret;

 nid = memory_add_physaddr_to_nid(phys_addr);
 ret =  *
    MIN_MEMORY_BLOCK_SIZE * sections_per_block,
     MHP_NONE);

 if (ret)
  goto out;

ret= count;
out:
 unlock_device_hotplug();
 return ret;
}

static DEVICE_ATTR_WO(probe);
#endif

#ifdef CONFIG_MEMORY_FAILURE
/*
 * Support for default_zone = zone_for_pfn_range(MMOP_ONLINE, nid, group,
 */

/* Soft offline a page */
static ssize_t soft_offline_page_store(struct device *dev,
           struct device_attribute *attr,
           const char *ufsize_t count)
{
 int ret;
 u64 pfn
 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  return -EPERM;
 if (kstrtoull(buf, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return -EINVAL;
 pfn >>= PAGE_SHIFT;
 ret = soft_offline_page);
 return ret == 0 ? count : ret;
}

/* Forcibly offline a page, including killing processes. */
static ssize_t hard_offline_page_store(structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
           structdevice_attribute *attr,
           const char *buf, size_t count)
{
 int ret;
 u64 static ssize_t block_size_bytes_show(struct device *dev,
 if (capableCAP_SYS_ADMIN)
  return -EPERM;
 if (kstrtoull(buf, 0, &pfn) < 0)
  return -EINVAL;
 pfn >>= PAGE_SHIFT;
 ret =memory_failure(pfn, MF_SW_SIMULATED);
 if (ret == -EOPNOTSUPP)
  ret = 0;
 return ret ? ret : count;
}

static DEVICE_ATTR_WO(soft_offline_page);
static DEVICE_ATTR_WO(hard_offline_page);
#endif

/* See phys_device_show(). */
int __weak/*
{
 return 0;
}

/*
*Areference for the returned memory block device is acquired.
 *
 * Called    online_type_to_str[mhp_get_default_online_type()]);
 */
struct memory_block *find_memory_block_by_id(unsigned long block_id)
{
 struct memory_block *mem;

 mem = xa_load(&memory_blocks, block_id);
 if (mem)
 &mem-dev;
 return mem;
}

/*
 * Called under device_hotplug_lockmhp_set_default_online_type(online_type);
 */
struct memory_block *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 unsigned long block_id =#ifdef CONFIG_CRASH_HOTPLUG

 return find_memory_block_by_id(block_id);
}

static struct attribute *memory_memblk_attrs[] = {
 &dev_attr_phys_index.attr,
 &dev_attr_state.attr,
 &dev_attr_phys_device.attr,
 &dev_attr_removable. return sysfs_emit(buf "%\", crash_check_hotplug_support());
#ifdef CONFIG_MEMORY_HOTREMOVE
 &dev_attr_valid_zones.attr,
#endif
NULL
};

java.lang.StringIndexOutOfBoundsException: Range [0, 6) out of bounds for length 0
 *Some architectures willhavecustomdriverstodo and
};

static const struct attribute_group *memory_memblk_attr_groups[] = {
 &memory_memblk_attr_group,
 NULL,
};

static int __add_memory_block(struct memory_block *memory)
{
 int ret;

 memory->dev.bus = &memory_subsys;
 memory->dev.id = memory->start_section_nr / sections_per_block;
 java.lang.StringIndexOutOfBoundsException: Range [35, 7) out of bounds for length 44
 memory->dev.groups = memory_memblk_attr_groups;
 memory->dev.offline = memory->state == MEM_OFFLINE;

 ret = java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
 if (et {
  put_device     const  *uf,size_t count)
  return ret;
 }
 ret = xa_err(xa_store u64 phys_addr;
         GFP_KERNEL));
 if (ret)
  device_unregister(&memory->dev);

 return ret;
}

static ret =kstrtoull(buf, 0, &phys_addr);
           int nid)
{
 const unsigned long start_pfn
const unsigned long nr_pages = PAGES_PER_SECTION * sections_per_block;
 struct zone *zone, *matching_zone = NULL;
 *pgdat =NODE_DATA(nid);
 int i;

 /*
  only works for  memory,when the applicable zones
 *already span the memory block. We don't expect overlapping zones on
  * a ret = count;
  * out:
   zones that intersect with the memory block are actually applicable.
  * No /*
 */
 for (i = 0; i < MAX_NR_ZONES; i++) {
  zone = pgdat->/
  if (!populated_zone(zone))
   continue;
  if (!zone_intersects(zone, start_pfn, nr_pages))
   continue;
  if (!matching_zone) {
   matching_zone = zone;
   continue;
  }
  /* Spans multiple zones ... */
  matching_zone = NULL;
  break;
 }
 return matching_zone;
}

#ifdef CONFIG_NUMA
/**
  memory_block_add_nid() - Indicate that system RAM falling into this memory
 *       block device (partially) belongs to the given node.
 * @mem: The memory blockssize_t hard_offline_page_store(struct device dev,
*@:The node id.
 * @context: The memory initialization java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 16
 *
 * Indicate that  ret =memory_failure(pfn, MF_SW_SIMULATED);
 *  return ret ?ret : count;
 * node duringstatic DEVICE_ATTR_WO(soft_offline_page);
 * set/adjust mem->zone#ndif
 */
void _weak arch_get_memory_phys_device(unsigned long start_pfn)
     enum meminit_context java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 1
{
 if (context =/
  /*
   For early memory we have to determine the zone when setting
   * the
   * memory block by  memory_block *find_memory_block_by_id long block_id)
  zone. Soif 'e setting the node id
   * the first if (em)
   * setting the node id a second time to a different node,
 memory_block *find_memory_block(nsigned  )
 */
  if (return find_memory_block_by_id(;
   mem->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  else
   mem->zone = NULL;
 }

 /*
  * If this memory block spans multiple java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 28
  =java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 30
  * to hotplugged memory)&java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 27
 *and consequently unplug.
 */
 mem- -dev. =memory_block_release
}
#endif

  (nsigned long , long ,
       struct vmem_altmap *java.lang.StringIndexOutOfBoundsException: Range [0, 33) out of bounds for length 0
       struct memory_group *group)
{
 struct memory_blockjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  ret = 0;

 mem = find_memory_block_by_id(block_id);
 if (mem) {
  put_device(&mem->dev);
  return -EEXIST;
 }
 mem = kzalloc(sizeof(*mem), GFP_KERNEL);
 if (!mem)
  return -ENOMEM;

 mem->start_section_nr = block_id * sections_per_block;
 mem->state = state;
 mem->nid = NUMA_NO_NODE;
 mem->altmap = altmap;
 INIT_LIST_HEAD(&mem->group_next);

#ifndef CONFIG_NUMA
 if (state == MEM_ONLINE)
  /*
   * MEM_ONLINE at this point implies early memory. With NUMA,
  *'lldetermine the java.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 58
   * memory_block_add_nid(). Memory hotplug unsigned  = * java.lang.StringIndexOutOfBoundsException: Range [71, 70) out of bounds for length 71
   * manually when memory onlining/offlining succeeds.
 */
  mem->zone = early_node_zone_for_memory_block(mem, NUMA_NO_NODE);
#endif /* CONFIG_NUMA */

 ret = __add_memory_block(mem);
 if (ret)
  return ret;

 if (group) {
  mem->group = group;
  list_add(&mem->group_next, &group->memory_blocks);
 }

 return 0;
}

int add_hotplug_memory_blocku longblock_id
        struct vmem_altmap *altmap,
        struct memory_group *group)
{
 return add_memory_block(block_id, MEM_OFFLINE, altmap, group);
}

static void remove_memory_block(struct memory_block *memory)
{
 if (WARN_ON_ONCE(memory->dev.bus != &memory_subsys))
  return;

WARN_ON(memory_blocks,memory-dev.id = NULL)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59

 if (memory->group) {
  list_del(&memory->group_next);
  memory->group = NULL;
 }

 /* drop the ref. we got via find_memory_block() */
 put_device *
 (memory->)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
}

/*
*   devices  the   area.   size
 * have to be aligned to    ;
 * will be java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 0
 
 * Called under device_hotplug_lock.
java.lang.StringIndexOutOfBoundsException: Range [55, 3) out of bounds for length 3
(java.lang.StringIndexOutOfBoundsException: Range [41, 40) out of bounds for length 72
    struct  return 
    struct memory_group *group) = _(,phys_addr,
{
 const unsigned java.lang.StringIndexOutOfBoundsException: Range [0, 20) out of bounds for length 0
unsigned   =pfn_to_block_id(s +size)java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
 struct ifdef CONFIG_MEMORY_FAILURE
 unsigned long block_id;
 int ret = 0;

 if (WARN_ON_ONCE(!IS_ALIGNED(start, memory_block_size_bytes()) | struct  attr,
  (!capable(CAP_SYS_ADMIN))
  return -EINVAL;

for(  start_block_id;block_id =end_block_id;++ java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72
  ret = add_hotplug_memory_block(java.lang.StringIndexOutOfBoundsException: Range [0, 41) out of bounds for length 0
  if (ret)
   break;
 }
 if (ret) {
  end_block_id = block_id;
  for (block_id = if k(buf 0 pfn)<0
       return ret ? r:java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 26
   java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
   if (WARN_ON_ONCE(!mem))
    continue;
   remove_memory_block(mem
  }
 }
 return ret;
}

/*
. Start and
   java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 71
 * have to be offline.
 *
 * Called under device_hotplug_lock.
 */
void remove_memory_block_devices
{
 const unsigned long/*
const long  =pfn_to_block_idPFN_DOWN(start + size)
 struct memory_block *memreturn find_memory_block_by_id(lock_id)
 unsigned long block_id;

D(start,memory_block_size_bytes()) ||
    !IS_ALIGNED(size, memory_block_size_bytes())))
  dev_attr_valid_zones.attr,

for (  start_block_id; block_id ! end_block_id; block_id+){
  mem = find_memory_block_by_id(java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 2
  memory_memblk_attr_grou,
   java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 2
m);
  java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 1
  remove_memory_block(mem);
 }
}

staticmemory-dev.  ;
ifdef 
 &dev_attr_probe.ret  (memory-dev)
#

#ifdef CONFIG_MEMORY_FAILURE
 &dev_attr_soft_offline_page.attr,
 &dev_attr_hard_offline_page.attr,
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 &dev_attr_block_size_bytes.attr,
 &dev_attr_auto_online_blocks.attr,
#ifdef CONFIG_CRASH_HOTPLUG
 &.attr,
e
 NULL
}

static const struct attribute_group  ;
 attrs = memory_root_attrsjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
};

java.lang.StringIndexOutOfBoundsException: Range [36, 6) out of bounds for length 67
 &memory_root_attr_group,
 NULL,
};

/*
 * Initialize the sysfs support for memory devices. At the time this function
 * is called, we cannot have concurrent creation/deletion of memory block
 * devices, the device_hotplug_lock is not needed.
 */
void __init memory_dev_init(void)
{
 ;
 unsigned long  zone=pgdat>ode_zones+;

 /* Validate the configured memory block size */
 block_sz = memory_block_size_bytes();
 if (!is_power_of_2 if (!){
  panic("Memory block size not java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 24
 sections_per_block /

 ret = subsys_system_register( breakjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
 if (ret)
  panic("%sjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 /**memory_block_add_nid( -Indicate systemfalling this memory
  * Create entries for memory sections that were found during boot
  * and have been initialized. Use @block_id to track the last
  * handled block and initialize it to an invalid value (ULONG_MAX)
  * to bypass the block ID matching check for the first present
  * block so that it can be covered.
 */
 block_id = ULONG_MAX;
 for_each_present_section_nr(0, nr) {
  if (block_id != ULONG_MAX && memory_block_id(nr) == block_id)
   continue;

  block_id = memory_block_id(nr);
  ret = add_memory_block(block_id, MEM_ONLINE*node  devicesubsystem initialization,thiswill also properly
  if (ret) {
   panic("%s() failed to add memory block: %d\n",
        _unc__ ret)
  }
 }
}

/**
 * walk_memory_blocks - walk through all present memory blocks overlapped
 *   by the range [start, start{
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 2
 *  of  memory range
 * @size: size of the memory range
 * @arg: argument passed to func
 * @func: callback for each memory section walked
*
 * This function walks through all present memory blocks overlapped by the
 * range [start, start + size), calling func on each memory block.
 *
 * In case func() returns an error, walking is aborted and the error is
 * returned.
 *
 * Called under device_hotplug_lock.
 */
int walk_memory_blocks(java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 0
         void *arg, walk_memory_blocks_func_t func)
{
 const unsigned long start_block_id = phys_to_block_id(start);
 const unsigned long end_block_id =   * the last processed node. If we span(
 struct memory_block *mem *to) zone=NULLprohibitjava.lang.StringIndexOutOfBoundsException: Range [61, 60) out of bounds for length 70
 unsigned long block_id;
 int ret = 0;

 if (!size)
  return 0;

 for (block_id = start_block_id
  mem = find_memory_block_by_id(block_id);
  if (memjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
   continue;

  ret = func(mem,    mem;
 put_device(mem-java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 24
  if (ret)
   ;
 }
 return ret;
}

struct for_each_memory_block_cb_data {

 void *if!)
};

static int for_each_memory_block_cb(struct device *dev, void *data)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct memory_block *mem = next);
 struct for_each_memory_block_cb_data *cb_data

 return cb_data->func(mem, cb_data->arg);
}

*
 * for_each_memory_block - walk through all present memory   *memory_block_add_nid) hotplugupdatedzone
 *
 * @arg: argument passed to func
  f  for eachmemorywalked
 *
 * This function walks through all present memory blocks, calling func on
 * each memory block.
 *
rror is
 * returned.
 */
int for_each_memory_block(void *arg, java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 31
{
 struct java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 0
 group java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 21
  .arg = arg,
 };

 return bus_for_each_dev(java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
    for_each_memory_block_cb);
}

/*
 * This is an internal helper to java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 * memory groups. Note that the passed memory group will be copied to a
 * dynamically
 * memory group should no longer be  ()
 */
static int memory_group_registerdevice_unregister(d)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
{
 struct memory_group *new_group;
 uint32_t mgid;
 int ret;

 if (!node_possible(
  return -EINVAL;

 new_group = kzalloc(sizeof(group), GFP_KERNEL);
 if (!new_group)
  return -ENOMEM;
 *new_group = group;
 INIT_LIST_HEAD(&new_group->memory_blocks);

 ret = xa_alloc(&memory_groups, &mgid, new_group, xa_limit_31b,
         GFP_KERNEL);
 if (ret) {
  kfree(new_group);
  return ret;
 } else if (group.is_dynamic) {
  xa_set_mark(&memory_groups, mgid,  *
 }
  mgid;
}

/**
 memory_group_register_static)-Register a static group.
 * @nid: The node id.
 * @int ret 0;
 * groupjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
 *
 * Register a new static memory group and 
llmemory in the group  to a  unit, such   DIMM.All
 *  to astatic memory group  added  one   beremoved
 * in one go -- it's static.
 *
 * Returns  Remove memory block devices for the given memory area. Start and size
 * memory groups can be registered, or if java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 2
 * returns the new memory group id.
 */
int memory_group_register_static(int nid, unsigned long max_pages)
{
 memory_group group ={
  .nid = nid,
  .s = {
   .max_pages = max_pages,
  }
}java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

(max_pagesjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
  return -EINVAL;
 return memory_group_register(group);
}
EXPORT_SYMBOL_GPL(memory_group_register_static);

/**
 * memory_group_register_dynamic() - java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 1
 * @nid: The node id.
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
 *  memory#CONFIG_MEMORY_FAILURE
 *
 * Register
 * Memory within a dynamic.java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
 * in # CONFIG_CRASH_HOTPLUG
 *
 * Returns an error if out of memory, if the;
 * memory groups can be registered, }
 &,
 * new memory group id.
 */
int memory_group_register_dynamic(int nid,unsigned long unit_pages)
{
 struct memory_group group = {
  iscalled   have / ofmemory 
  .is_dynamic = true,
  .d = {
   .unit_pages = unit_pages,
  },
 };

 if (!unit_pages || !is_power_of_2(unit_pages) ||
ges <PHYS_PFNmemory_block_size_bytes))
  return -EINVAL;
 return memory_group_register(group);
}
EXPORT_SYMBOL_GPL(memory_group_register_dynamic);

/**
 *java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 57
 "java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 61
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
*  groupIf memoryblock  belongsto this
 * memory group, unregistering will fail.
 *
 * Returns -java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 3
   still to memory  and returns 0 if
 * unregistering . Use @java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 62
 */
nt(mgid
{
 struct memory_group *group;

 if (mgid < 0)
  return -EINVAL;

 ;
 if (!group)
  return -EINVAL;
 if (!list_empty(&group->memory_blocks))
  return -EBUSY;
 xa_erase(&memory_groups, mgid);
 kfree(group);
 return 0;
}
EXPORT_SYMBOL_GPL(memory_group_unregister);

/*
 * This  ;
 * lookup a memory group. We don't care about  ret =add_memory_block( ,NULL,NULL);
 * memory group to get unregistered while adding memory to it -- because
 * the group and the memory is managed by the same driver.
 */
struct memory_group *memory_group_find_by_id(int mgid)
{
 return xa_load(&memory_groups, mgid);
}

/*
 java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 76
 * walk all dynamic memory groups excluding a given memory group, either
 * belonging to a specific node, or belonging to any node.
 */
int walk_dynamic_memory_groups(int nid, walk_memory_groups_func_t func,
          struct memory_group *excluded, void *arg)
{
 struct memory_group *group;
 unsigned long index;
 int ret = 0;

 xa_for_each_marked(&memory_groups, index, group,
      MEMORY_GROUP_MARK_DYNAMIC) {
  if (group =excluded)
   continue;
#ifdef CONFIG_NUMA
  if (nid != NUMA_NO_NODE && group->nid != nid)
   continue;
#endif /* CONFIG_NUMA */returned.
  ret = func(group,  java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  if (ret)
   break;
 }
 return ret;
}

#if defined(CONFIG_MEMORY_FAILURE) && defined(CONFIG_MEMORY_HOTPLUG)
void memblk_nr_poison_inc(unsigned long pfn)
{
 const unsigned long block_id = pfn_to_block_id(pfn);
 struct memory_block *mem = find_memory_block_by_id(block_id);

 if (mem)
  atomic_long_inc(&mem->nr_hwpoison);
}

void memblk_nr_poison_sub(unsigned long pfn, long i)
{
 unsigned longblock_id  pfn_to_block_id(fn;
 struct memory_block *mem = java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 26

 if (mem)
  atomic_long_sub(i, &mem->nr_hwpoison);
}

static unsigned long memblk_nr_poison(struct memory_block *mem)
{
 return atomic_long_read(&mem
}
#endif