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Merge branch 'akpm' (fixes from Andrew Morton)

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Merge patch-bomb from Andrew Morton:
 - part of OCFS2 (review is laggy again)
 - procfs
 - slab
 - all of MM
 - zram, zbud
 - various other random things: arch, filesystems.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (164 commits)
  nosave: consolidate __nosave_{begin,end} in <asm/sections.h>
  include/linux/screen_info.h: remove unused ORIG_* macros
  kernel/sys.c: compat sysinfo syscall: fix undefined behavior
  kernel/sys.c: whitespace fixes
  acct: eliminate compile warning
  kernel/async.c: switch to pr_foo()
  include/linux/blkdev.h: use NULL instead of zero
  include/linux/kernel.h: deduplicate code implementing clamp* macros
  include/linux/kernel.h: rewrite min3, max3 and clamp using min and max
  alpha: use Kbuild logic to include <asm-generic/sections.h>
  frv: remove deprecated IRQF_DISABLED
  frv: remove unused cpuinfo_frv and friends to fix future build error
  zbud: avoid accessing last unused freelist
  zsmalloc: simplify init_zspage free obj linking
  mm/zsmalloc.c: correct comment for fullness group computation
  zram: use notify_free to account all free notifications
  zram: report maximum used memory
  zram: zram memory size limitation
  zsmalloc: change return value unit of zs_get_total_size_bytes
  zsmalloc: move pages_allocated to zs_pool
  ...
This commit is contained in:
Linus Torvalds
2014-10-09 22:26:14 -04:00
parent b528392669 7f8998c7ae
commit 0cf744bc7a
177 changed files with 4109 additions and 2872 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/asm-generic/dma-mapping-common.h
+9
View File
@@ -179,6 +179,15 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t dma_addr, size_t size);
void *dma_common_contiguous_remap(struct page *page, size_t size,
unsigned long vm_flags,
pgprot_t prot, const void *caller);
void *dma_common_pages_remap(struct page **pages, size_t size,
unsigned long vm_flags, pgprot_t prot,
const void *caller);
void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags);
/**
* dma_mmap_attrs - map a coherent DMA allocation into user space
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
include/asm-generic/pgtable.h
+9 -18
View File
@@ -664,11 +664,12 @@ static inline int pmd_trans_unstable(pmd_t *pmd)
}
#ifdef CONFIG_NUMA_BALANCING
#ifdef CONFIG_ARCH_USES_NUMA_PROT_NONE
/*
* _PAGE_NUMA works identical to _PAGE_PROTNONE (it's actually the
* same bit too). It's set only when _PAGE_PRESET is not set and it's
* never set if _PAGE_PRESENT is set.
* _PAGE_NUMA distinguishes between an unmapped page table entry, an entry that
* is protected for PROT_NONE and a NUMA hinting fault entry. If the
* architecture defines __PAGE_PROTNONE then it should take that into account
* but those that do not can rely on the fact that the NUMA hinting scanner
* skips inaccessible VMAs.
*
* pte/pmd_present() returns true if pte/pmd_numa returns true. Page
* fault triggers on those regions if pte/pmd_numa returns true
@@ -677,16 +678,14 @@ static inline int pmd_trans_unstable(pmd_t *pmd)
#ifndef pte_numa
static inline int pte_numa(pte_t pte)
{
return (pte_flags(pte) &
(_PAGE_NUMA|_PAGE_PROTNONE|_PAGE_PRESENT)) == _PAGE_NUMA;
return ptenuma_flags(pte) == _PAGE_NUMA;
}
#endif
#ifndef pmd_numa
static inline int pmd_numa(pmd_t pmd)
{
return (pmd_flags(pmd) &
(_PAGE_NUMA|_PAGE_PROTNONE|_PAGE_PRESENT)) == _PAGE_NUMA;
return pmdnuma_flags(pmd) == _PAGE_NUMA;
}
#endif
@@ -726,6 +725,8 @@ static inline pte_t pte_mknuma(pte_t pte)
{
pteval_t val = pte_val(pte);
VM_BUG_ON(!(val & _PAGE_PRESENT));
val &= ~_PAGE_PRESENT;
val |= _PAGE_NUMA;
@@ -769,16 +770,6 @@ static inline void pmdp_set_numa(struct mm_struct *mm, unsigned long addr,
}
#endif
#else
extern int pte_numa(pte_t pte);
extern int pmd_numa(pmd_t pmd);
extern pte_t pte_mknonnuma(pte_t pte);
extern pmd_t pmd_mknonnuma(pmd_t pmd);
extern pte_t pte_mknuma(pte_t pte);
extern pmd_t pmd_mknuma(pmd_t pmd);
extern void ptep_set_numa(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
extern void pmdp_set_numa(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp);
#endif /* CONFIG_ARCH_USES_NUMA_PROT_NONE */
#else
static inline int pmd_numa(pmd_t pmd)
{
return 0;
include/asm-generic/sections.h
+4
View File
@@ -3,6 +3,8 @@
/* References to section boundaries */
#include <linux/compiler.h>
/*
* Usage guidelines:
* _text, _data: architecture specific, don't use them in arch-independent code
@@ -37,6 +39,8 @@ extern char __start_rodata[], __end_rodata[];
/* Start and end of .ctors section - used for constructor calls. */
extern char __ctors_start[], __ctors_end[];
extern __visible const void __nosave_begin, __nosave_end;
/* function descriptor handling (if any). Override
* in asm/sections.h */
#ifndef dereference_function_descriptor
include/linux/balloon_compaction.h
+45 -126
View File
@@ -27,10 +27,13 @@
* counter raised only while it is under our special handling;
*
* iii. after the lockless scan step have selected a potential balloon page for
* isolation, re-test the page->mapping flags and the page ref counter
* isolation, re-test the PageBalloon mark and the PagePrivate flag
* under the proper page lock, to ensure isolating a valid balloon page
* (not yet isolated, nor under release procedure)
*
* iv. isolation or dequeueing procedure must clear PagePrivate flag under
* page lock together with removing page from balloon device page list.
*
* The functions provided by this interface are placed to help on coping with
* the aforementioned balloon page corner case, as well as to ensure the simple
* set of exposed rules are satisfied while we are dealing with balloon pages
@@ -54,43 +57,22 @@
* balloon driver as a page book-keeper for its registered balloon devices.
*/
struct balloon_dev_info {
void *balloon_device; /* balloon device descriptor */
struct address_space *mapping; /* balloon special page->mapping */
unsigned long isolated_pages; /* # of isolated pages for migration */
spinlock_t pages_lock; /* Protection to pages list */
struct list_head pages; /* Pages enqueued & handled to Host */
int (*migratepage)(struct balloon_dev_info *, struct page *newpage,
struct page *page, enum migrate_mode mode);
};
extern struct page *balloon_page_enqueue(struct balloon_dev_info *b_dev_info);
extern struct page *balloon_page_dequeue(struct balloon_dev_info *b_dev_info);
extern struct balloon_dev_info *balloon_devinfo_alloc(
void *balloon_dev_descriptor);
static inline void balloon_devinfo_free(struct balloon_dev_info *b_dev_info)
static inline void balloon_devinfo_init(struct balloon_dev_info *balloon)
{
kfree(b_dev_info);
}
/*
* balloon_page_free - release a balloon page back to the page free lists
* @page: ballooned page to be set free
*
* This function must be used to properly set free an isolated/dequeued balloon
* page at the end of a sucessful page migration, or at the balloon driver's
* page release procedure.
*/
static inline void balloon_page_free(struct page *page)
{
/*
* Balloon pages always get an extra refcount before being isolated
* and before being dequeued to help on sorting out fortuite colisions
* between a thread attempting to isolate and another thread attempting
* to release the very same balloon page.
*
* Before we handle the page back to Buddy, lets drop its extra refcnt.
*/
put_page(page);
__free_page(page);
balloon->isolated_pages = 0;
spin_lock_init(&balloon->pages_lock);
INIT_LIST_HEAD(&balloon->pages);
balloon->migratepage = NULL;
}
#ifdef CONFIG_BALLOON_COMPACTION
@@ -98,107 +80,58 @@ extern bool balloon_page_isolate(struct page *page);
extern void balloon_page_putback(struct page *page);
extern int balloon_page_migrate(struct page *newpage,
struct page *page, enum migrate_mode mode);
extern struct address_space
*balloon_mapping_alloc(struct balloon_dev_info *b_dev_info,
const struct address_space_operations *a_ops);
static inline void balloon_mapping_free(struct address_space *balloon_mapping)
{
kfree(balloon_mapping);
}
/*
* page_flags_cleared - helper to perform balloon @page ->flags tests.
*
* As balloon pages are obtained from buddy and we do not play with page->flags
* at driver level (exception made when we get the page lock for compaction),
* we can safely identify a ballooned page by checking if the
* PAGE_FLAGS_CHECK_AT_PREP page->flags are all cleared. This approach also
* helps us skip ballooned pages that are locked for compaction or release, thus
* mitigating their racy check at balloon_page_movable()
*/
static inline bool page_flags_cleared(struct page *page)
{
return !(page->flags & PAGE_FLAGS_CHECK_AT_PREP);
}
/*
* __is_movable_balloon_page - helper to perform @page mapping->flags tests
* __is_movable_balloon_page - helper to perform @page PageBalloon tests
*/
static inline bool __is_movable_balloon_page(struct page *page)
{
struct address_space *mapping = page->mapping;
return mapping_balloon(mapping);
return PageBalloon(page);
}
/*
* balloon_page_movable - test page->mapping->flags to identify balloon pages
* that can be moved by compaction/migration.
*
* This function is used at core compaction's page isolation scheme, therefore
* most pages exposed to it are not enlisted as balloon pages and so, to avoid
* undesired side effects like racing against __free_pages(), we cannot afford
* holding the page locked while testing page->mapping->flags here.
* balloon_page_movable - test PageBalloon to identify balloon pages
* and PagePrivate to check that the page is not
* isolated and can be moved by compaction/migration.
*
* As we might return false positives in the case of a balloon page being just
* released under us, the page->mapping->flags need to be re-tested later,
* under the proper page lock, at the functions that will be coping with the
* balloon page case.
* released under us, this need to be re-tested later, under the page lock.
*/
static inline bool balloon_page_movable(struct page *page)
{
/*
* Before dereferencing and testing mapping->flags, let's make sure
* this is not a page that uses ->mapping in a different way
*/
if (page_flags_cleared(page) && !page_mapped(page) &&
page_count(page) == 1)
return __is_movable_balloon_page(page);
return false;
return PageBalloon(page) && PagePrivate(page);
}
/*
* isolated_balloon_page - identify an isolated balloon page on private
* compaction/migration page lists.
*
* After a compaction thread isolates a balloon page for migration, it raises
* the page refcount to prevent concurrent compaction threads from re-isolating
* the same page. For that reason putback_movable_pages(), or other routines
* that need to identify isolated balloon pages on private pagelists, cannot
* rely on balloon_page_movable() to accomplish the task.
*/
static inline bool isolated_balloon_page(struct page *page)
{
/* Already isolated balloon pages, by default, have a raised refcount */
if (page_flags_cleared(page) && !page_mapped(page) &&
page_count(page) >= 2)
return __is_movable_balloon_page(page);
return false;
return PageBalloon(page);
}
/*
* balloon_page_insert - insert a page into the balloon's page list and make
* the page->mapping assignment accordingly.
* the page->private assignment accordingly.
* @balloon : pointer to balloon device
* @page : page to be assigned as a 'balloon page'
* @mapping : allocated special 'balloon_mapping'
* @head : balloon's device page list head
*
* Caller must ensure the page is locked and the spin_lock protecting balloon
* pages list is held before inserting a page into the balloon device.
*/
static inline void balloon_page_insert(struct page *page,
struct address_space *mapping,
struct list_head *head)
static inline void balloon_page_insert(struct balloon_dev_info *balloon,
struct page *page)
{
page->mapping = mapping;
list_add(&page->lru, head);
__SetPageBalloon(page);
SetPagePrivate(page);
set_page_private(page, (unsigned long)balloon);
list_add(&page->lru, &balloon->pages);
}
/*
* balloon_page_delete - delete a page from balloon's page list and clear
* the page->mapping assignement accordingly.
* the page->private assignement accordingly.
* @page : page to be released from balloon's page list
*
* Caller must ensure the page is locked and the spin_lock protecting balloon
@@ -206,8 +139,12 @@ static inline void balloon_page_insert(struct page *page,
*/
static inline void balloon_page_delete(struct page *page)
{
page->mapping = NULL;
list_del(&page->lru);
__ClearPageBalloon(page);
set_page_private(page, 0);
if (PagePrivate(page)) {
ClearPagePrivate(page);
list_del(&page->lru);
}
}
/*
@@ -216,11 +153,7 @@ static inline void balloon_page_delete(struct page *page)
*/
static inline struct balloon_dev_info *balloon_page_device(struct page *page)
{
struct address_space *mapping = page->mapping;
if (likely(mapping))
return mapping->private_data;
return NULL;
return (struct balloon_dev_info *)page_private(page);
}
static inline gfp_t balloon_mapping_gfp_mask(void)
@@ -228,36 +161,26 @@ static inline gfp_t balloon_mapping_gfp_mask(void)
return GFP_HIGHUSER_MOVABLE;
}
static inline bool balloon_compaction_check(void)
{
return true;
}
#else /* !CONFIG_BALLOON_COMPACTION */
static inline void *balloon_mapping_alloc(void *balloon_device,
const struct address_space_operations *a_ops)
static inline void balloon_page_insert(struct balloon_dev_info *balloon,
struct page *page)
{
return ERR_PTR(-EOPNOTSUPP);
}
static inline void balloon_mapping_free(struct address_space *balloon_mapping)
{
return;
}
static inline void balloon_page_insert(struct page *page,
struct address_space *mapping,
struct list_head *head)
{
list_add(&page->lru, head);
__SetPageBalloon(page);
list_add(&page->lru, &balloon->pages);
}
static inline void balloon_page_delete(struct page *page)
{
__ClearPageBalloon(page);
list_del(&page->lru);
}
static inline bool __is_movable_balloon_page(struct page *page)
{
return false;
}
static inline bool balloon_page_movable(struct page *page)
{
return false;
@@ -289,9 +212,5 @@ static inline gfp_t balloon_mapping_gfp_mask(void)
return GFP_HIGHUSER;
}
static inline bool balloon_compaction_check(void)
{
return false;
}
#endif /* CONFIG_BALLOON_COMPACTION */
#endif /* _LINUX_BALLOON_COMPACTION_H */
include/linux/blkdev.h
+1 -1
View File
@@ -1564,7 +1564,7 @@ static inline int blk_rq_map_integrity_sg(struct request_queue *q,
}
static inline struct blk_integrity *bdev_get_integrity(struct block_device *b)
{
return 0;
return NULL;
}
static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
{
include/linux/compaction.h
+18 -6
View File
@@ -2,14 +2,24 @@
#define _LINUX_COMPACTION_H
/* Return values for compact_zone() and try_to_compact_pages() */
/* compaction didn't start as it was deferred due to past failures */
#define COMPACT_DEFERRED 0
/* compaction didn't start as it was not possible or direct reclaim was more suitable */
#define COMPACT_SKIPPED 0
#define COMPACT_SKIPPED 1
/* compaction should continue to another pageblock */
#define COMPACT_CONTINUE 1
#define COMPACT_CONTINUE 2
/* direct compaction partially compacted a zone and there are suitable pages */
#define COMPACT_PARTIAL 2
#define COMPACT_PARTIAL 3
/* The full zone was compacted */
#define COMPACT_COMPLETE 3
#define COMPACT_COMPLETE 4
/* Used to signal whether compaction detected need_sched() or lock contention */
/* No contention detected */
#define COMPACT_CONTENDED_NONE 0
/* Either need_sched() was true or fatal signal pending */
#define COMPACT_CONTENDED_SCHED 1
/* Zone lock or lru_lock was contended in async compaction */
#define COMPACT_CONTENDED_LOCK 2
#ifdef CONFIG_COMPACTION
extern int sysctl_compact_memory;
@@ -22,7 +32,8 @@ extern int sysctl_extfrag_handler(struct ctl_table *table, int write,
extern int fragmentation_index(struct zone *zone, unsigned int order);
extern unsigned long try_to_compact_pages(struct zonelist *zonelist,
int order, gfp_t gfp_mask, nodemask_t *mask,
enum migrate_mode mode, bool *contended);
enum migrate_mode mode, int *contended,
struct zone **candidate_zone);
extern void compact_pgdat(pg_data_t *pgdat, int order);
extern void reset_isolation_suitable(pg_data_t *pgdat);
extern unsigned long compaction_suitable(struct zone *zone, int order);
@@ -91,7 +102,8 @@ static inline bool compaction_restarting(struct zone *zone, int order)
#else
static inline unsigned long try_to_compact_pages(struct zonelist *zonelist,
int order, gfp_t gfp_mask, nodemask_t *nodemask,
enum migrate_mode mode, bool *contended)
enum migrate_mode mode, int *contended,
struct zone **candidate_zone)
{
return COMPACT_CONTINUE;
}
include/linux/genalloc.h
+7
View File
@@ -110,6 +110,10 @@ extern void gen_pool_set_algo(struct gen_pool *pool, genpool_algo_t algo,
extern unsigned long gen_pool_first_fit(unsigned long *map, unsigned long size,
unsigned long start, unsigned int nr, void *data);
extern unsigned long gen_pool_first_fit_order_align(unsigned long *map,
unsigned long size, unsigned long start, unsigned int nr,
void *data);
extern unsigned long gen_pool_best_fit(unsigned long *map, unsigned long size,
unsigned long start, unsigned int nr, void *data);
@@ -117,6 +121,9 @@ extern struct gen_pool *devm_gen_pool_create(struct device *dev,
int min_alloc_order, int nid);
extern struct gen_pool *dev_get_gen_pool(struct device *dev);
bool addr_in_gen_pool(struct gen_pool *pool, unsigned long start,
size_t size);
#ifdef CONFIG_OF
extern struct gen_pool *of_get_named_gen_pool(struct device_node *np,
const char *propname, int index);
include/linux/gfp.h
+1 -1
View File
@@ -156,7 +156,7 @@ struct vm_area_struct;
#define GFP_DMA32 __GFP_DMA32
/* Convert GFP flags to their corresponding migrate type */
static inline int allocflags_to_migratetype(gfp_t gfp_flags)
static inline int gfpflags_to_migratetype(const gfp_t gfp_flags)
{
WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
include/linux/huge_mm.h
+1 -1
View File
@@ -132,7 +132,7 @@ extern int __pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
static inline int pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
spinlock_t **ptl)
{
VM_BUG_ON(!rwsem_is_locked(&vma->vm_mm->mmap_sem));
VM_BUG_ON_VMA(!rwsem_is_locked(&vma->vm_mm->mmap_sem), vma);
if (pmd_trans_huge(*pmd))
return __pmd_trans_huge_lock(pmd, vma, ptl);
else
include/linux/kernel.h
+12 -44
View File
@@ -715,23 +715,8 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
(void) (&_max1 == &_max2); \
_max1 > _max2 ? _max1 : _max2; })
#define min3(x, y, z) ({ \
typeof(x) _min1 = (x); \
typeof(y) _min2 = (y); \
typeof(z) _min3 = (z); \
(void) (&_min1 == &_min2); \
(void) (&_min1 == &_min3); \
_min1 < _min2 ? (_min1 < _min3 ? _min1 : _min3) : \
(_min2 < _min3 ? _min2 : _min3); })
#define max3(x, y, z) ({ \
typeof(x) _max1 = (x); \
typeof(y) _max2 = (y); \
typeof(z) _max3 = (z); \
(void) (&_max1 == &_max2); \
(void) (&_max1 == &_max3); \
_max1 > _max2 ? (_max1 > _max3 ? _max1 : _max3) : \
(_max2 > _max3 ? _max2 : _max3); })
#define min3(x, y, z) min((typeof(x))min(x, y), z)
#define max3(x, y, z) max((typeof(x))max(x, y), z)
/**
* min_not_zero - return the minimum that is _not_ zero, unless both are zero
@@ -746,20 +731,13 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
/**
* clamp - return a value clamped to a given range with strict typechecking
* @val: current value
* @min: minimum allowable value
* @max: maximum allowable value
* @lo: lowest allowable value
* @hi: highest allowable value
*
* This macro does strict typechecking of min/max to make sure they are of the
* This macro does strict typechecking of lo/hi to make sure they are of the
* same type as val. See the unnecessary pointer comparisons.
*/
#define clamp(val, min, max) ({ \
typeof(val) __val = (val); \
typeof(min) __min = (min); \
typeof(max) __max = (max); \
(void) (&__val == &__min); \
(void) (&__val == &__max); \
__val = __val < __min ? __min: __val; \
__val > __max ? __max: __val; })
#define clamp(val, lo, hi) min((typeof(val))max(val, lo), hi)
/*
* ..and if you can't take the strict
@@ -781,36 +759,26 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
* clamp_t - return a value clamped to a given range using a given type
* @type: the type of variable to use
* @val: current value
* @min: minimum allowable value
* @max: maximum allowable value
* @lo: minimum allowable value
* @hi: maximum allowable value
*
* This macro does no typechecking and uses temporary variables of type
* 'type' to make all the comparisons.
*/
#define clamp_t(type, val, min, max) ({ \
type __val = (val); \
type __min = (min); \
type __max = (max); \
__val = __val < __min ? __min: __val; \
__val > __max ? __max: __val; })
#define clamp_t(type, val, lo, hi) min_t(type, max_t(type, val, lo), hi)
/**
* clamp_val - return a value clamped to a given range using val's type
* @val: current value
* @min: minimum allowable value
* @max: maximum allowable value
* @lo: minimum allowable value
* @hi: maximum allowable value
*
* This macro does no typechecking and uses temporary variables of whatever
* type the input argument 'val' is. This is useful when val is an unsigned
* type and min and max are literals that will otherwise be assigned a signed
* integer type.
*/
#define clamp_val(val, min, max) ({ \
typeof(val) __val = (val); \
typeof(val) __min = (min); \
typeof(val) __max = (max); \
__val = __val < __min ? __min: __val; \
__val > __max ? __max: __val; })
#define clamp_val(val, lo, hi) clamp_t(typeof(val), val, lo, hi)
/*
include/linux/memcontrol.h
-15
View File
@@ -440,11 +440,6 @@ void __memcg_kmem_uncharge_pages(struct page *page, int order);
int memcg_cache_id(struct mem_cgroup *memcg);
int memcg_alloc_cache_params(struct mem_cgroup *memcg, struct kmem_cache *s,
struct kmem_cache *root_cache);
void memcg_free_cache_params(struct kmem_cache *s);
int memcg_update_cache_size(struct kmem_cache *s, int num_groups);
void memcg_update_array_size(int num_groups);
struct kmem_cache *
@@ -574,16 +569,6 @@ static inline int memcg_cache_id(struct mem_cgroup *memcg)
return -1;
}
static inline int memcg_alloc_cache_params(struct mem_cgroup *memcg,
struct kmem_cache *s, struct kmem_cache *root_cache)
{
return 0;
}
static inline void memcg_free_cache_params(struct kmem_cache *s)
{
}
static inline struct kmem_cache *
memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp)
{
include/linux/memory_hotplug.h
+1
View File
@@ -84,6 +84,7 @@ extern int zone_grow_waitqueues(struct zone *zone, unsigned long nr_pages);
extern int add_one_highpage(struct page *page, int pfn, int bad_ppro);
/* VM interface that may be used by firmware interface */
extern int online_pages(unsigned long, unsigned long, int);
extern int test_pages_in_a_zone(unsigned long, unsigned long);
extern void __offline_isolated_pages(unsigned long, unsigned long);
typedef void (*online_page_callback_t)(struct page *page);
include/linux/mempolicy.h
+4 -3
View File
@@ -134,9 +134,10 @@ void mpol_free_shared_policy(struct shared_policy *p);
struct mempolicy *mpol_shared_policy_lookup(struct shared_policy *sp,
unsigned long idx);
struct mempolicy *get_vma_policy(struct task_struct *tsk,
struct vm_area_struct *vma, unsigned long addr);
bool vma_policy_mof(struct task_struct *task, struct vm_area_struct *vma);
struct mempolicy *get_task_policy(struct task_struct *p);
struct mempolicy *__get_vma_policy(struct vm_area_struct *vma,
unsigned long addr);
bool vma_policy_mof(struct vm_area_struct *vma);
extern void numa_default_policy(void);
extern void numa_policy_init(void);
include/linux/migrate.h
+1 -13
View File
@@ -13,18 +13,9 @@ typedef void free_page_t(struct page *page, unsigned long private);
* Return values from addresss_space_operations.migratepage():
* - negative errno on page migration failure;
* - zero on page migration success;
*
* The balloon page migration introduces this special case where a 'distinct'
* return code is used to flag a successful page migration to unmap_and_move().
* This approach is necessary because page migration can race against balloon
* deflation procedure, and for such case we could introduce a nasty page leak
* if a successfully migrated balloon page gets released concurrently with
* migration's unmap_and_move() wrap-up steps.
*/
#define MIGRATEPAGE_SUCCESS 0
#define MIGRATEPAGE_BALLOON_SUCCESS 1 /* special ret code for balloon page
* sucessful migration case.
*/
enum migrate_reason {
MR_COMPACTION,
MR_MEMORY_FAILURE,
@@ -82,9 +73,6 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping,
return -ENOSYS;
}
/* Possible settings for the migrate_page() method in address_operations */
#define migrate_page NULL
#endif /* CONFIG_MIGRATION */
#ifdef CONFIG_NUMA_BALANCING
include/linux/mm.h
+36 -2
View File
@@ -18,6 +18,7 @@
#include <linux/pfn.h>
#include <linux/bit_spinlock.h>
#include <linux/shrinker.h>
#include <linux/resource.h>
struct mempolicy;
struct anon_vma;
@@ -553,6 +554,25 @@ static inline void __ClearPageBuddy(struct page *page)
atomic_set(&page->_mapcount, -1);
}
#define PAGE_BALLOON_MAPCOUNT_VALUE (-256)
static inline int PageBalloon(struct page *page)
{
return atomic_read(&page->_mapcount) == PAGE_BALLOON_MAPCOUNT_VALUE;
}
static inline void __SetPageBalloon(struct page *page)
{
VM_BUG_ON_PAGE(atomic_read(&page->_mapcount) != -1, page);
atomic_set(&page->_mapcount, PAGE_BALLOON_MAPCOUNT_VALUE);
}
static inline void __ClearPageBalloon(struct page *page)
{
VM_BUG_ON_PAGE(!PageBalloon(page), page);
atomic_set(&page->_mapcount, -1);
}
void put_page(struct page *page);
void put_pages_list(struct list_head *pages);
@@ -1247,8 +1267,8 @@ static inline int stack_guard_page_end(struct vm_area_struct *vma,
!vma_growsup(vma->vm_next, addr);
}
extern pid_t
vm_is_stack(struct task_struct *task, struct vm_area_struct *vma, int in_group);
extern struct task_struct *task_of_stack(struct task_struct *task,
struct vm_area_struct *vma, bool in_group);
extern unsigned long move_page_tables(struct vm_area_struct *vma,
unsigned long old_addr, struct vm_area_struct *new_vma,
@@ -1780,6 +1800,20 @@ extern struct vm_area_struct *copy_vma(struct vm_area_struct **,
bool *need_rmap_locks);
extern void exit_mmap(struct mm_struct *);
static inline int check_data_rlimit(unsigned long rlim,
unsigned long new,
unsigned long start,
unsigned long end_data,
unsigned long start_data)
{
if (rlim < RLIM_INFINITY) {
if (((new - start) + (end_data - start_data)) > rlim)
return -ENOSPC;
}
return 0;
}
extern int mm_take_all_locks(struct mm_struct *mm);
extern void mm_drop_all_locks(struct mm_struct *mm);
include/linux/mmdebug.h
+20
View File
@@ -4,10 +4,14 @@
#include <linux/stringify.h>
struct page;
struct vm_area_struct;
struct mm_struct;
extern void dump_page(struct page *page, const char *reason);
extern void dump_page_badflags(struct page *page, const char *reason,
unsigned long badflags);
void dump_vma(const struct vm_area_struct *vma);
void dump_mm(const struct mm_struct *mm);
#ifdef CONFIG_DEBUG_VM
#define VM_BUG_ON(cond) BUG_ON(cond)
@@ -18,12 +22,28 @@ extern void dump_page_badflags(struct page *page, const char *reason,
BUG(); \
} \
} while (0)
#define VM_BUG_ON_VMA(cond, vma) \
do { \
if (unlikely(cond)) { \
dump_vma(vma); \
BUG(); \
} \
} while (0)
#define VM_BUG_ON_MM(cond, mm) \
do { \
if (unlikely(cond)) { \
dump_mm(mm); \
BUG(); \
} \
} while (0)
#define VM_WARN_ON(cond) WARN_ON(cond)
#define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
#define VM_WARN_ONCE(cond, format...) WARN_ONCE(cond, format)
#else
#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
#define VM_BUG_ON_VMA(cond, vma) VM_BUG_ON(cond)
#define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond)
#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
include/linux/mmzone.h
+3 -48
View File
@@ -521,13 +521,13 @@ struct zone {
atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
} ____cacheline_internodealigned_in_smp;
typedef enum {
enum zone_flags {
ZONE_RECLAIM_LOCKED, /* prevents concurrent reclaim */
ZONE_OOM_LOCKED, /* zone is in OOM killer zonelist */
ZONE_CONGESTED, /* zone has many dirty pages backed by
* a congested BDI
*/
ZONE_TAIL_LRU_DIRTY, /* reclaim scanning has recently found
ZONE_DIRTY, /* reclaim scanning has recently found
* many dirty file pages at the tail
* of the LRU.
*/
@@ -535,52 +535,7 @@ typedef enum {
* many pages under writeback
*/
ZONE_FAIR_DEPLETED, /* fair zone policy batch depleted */
} zone_flags_t;
static inline void zone_set_flag(struct zone *zone, zone_flags_t flag)
{
set_bit(flag, &zone->flags);
}
static inline int zone_test_and_set_flag(struct zone *zone, zone_flags_t flag)
{
return test_and_set_bit(flag, &zone->flags);
}
static inline void zone_clear_flag(struct zone *zone, zone_flags_t flag)
{
clear_bit(flag, &zone->flags);
}
static inline int zone_is_reclaim_congested(const struct zone *zone)
{
return test_bit(ZONE_CONGESTED, &zone->flags);
}
static inline int zone_is_reclaim_dirty(const struct zone *zone)
{
return test_bit(ZONE_TAIL_LRU_DIRTY, &zone->flags);
}
static inline int zone_is_reclaim_writeback(const struct zone *zone)
{
return test_bit(ZONE_WRITEBACK, &zone->flags);
}
static inline int zone_is_reclaim_locked(const struct zone *zone)
{
return test_bit(ZONE_RECLAIM_LOCKED, &zone->flags);
}
static inline int zone_is_fair_depleted(const struct zone *zone)
{
return test_bit(ZONE_FAIR_DEPLETED, &zone->flags);
}
static inline int zone_is_oom_locked(const struct zone *zone)
{
return test_bit(ZONE_OOM_LOCKED, &zone->flags);
}
};
static inline unsigned long zone_end_pfn(const struct zone *zone)
{
include/linux/pagemap.h
+1 -17
View File
@@ -24,8 +24,7 @@ enum mapping_flags {
AS_ENOSPC = __GFP_BITS_SHIFT + 1, /* ENOSPC on async write */
AS_MM_ALL_LOCKS = __GFP_BITS_SHIFT + 2, /* under mm_take_all_locks() */
AS_UNEVICTABLE = __GFP_BITS_SHIFT + 3, /* e.g., ramdisk, SHM_LOCK */
AS_BALLOON_MAP = __GFP_BITS_SHIFT + 4, /* balloon page special map */
AS_EXITING = __GFP_BITS_SHIFT + 5, /* final truncate in progress */
AS_EXITING = __GFP_BITS_SHIFT + 4, /* final truncate in progress */
};
static inline void mapping_set_error(struct address_space *mapping, int error)
@@ -55,21 +54,6 @@ static inline int mapping_unevictable(struct address_space *mapping)
return !!mapping;
}
static inline void mapping_set_balloon(struct address_space *mapping)
{
set_bit(AS_BALLOON_MAP, &mapping->flags);
}
static inline void mapping_clear_balloon(struct address_space *mapping)
{
clear_bit(AS_BALLOON_MAP, &mapping->flags);
}
static inline int mapping_balloon(struct address_space *mapping)
{
return mapping && test_bit(AS_BALLOON_MAP, &mapping->flags);
}
static inline void mapping_set_exiting(struct address_space *mapping)
{
set_bit(AS_EXITING, &mapping->flags);
include/linux/rmap.h
+1 -1
View File
@@ -150,7 +150,7 @@ int anon_vma_fork(struct vm_area_struct *, struct vm_area_struct *);
static inline void anon_vma_merge(struct vm_area_struct *vma,
struct vm_area_struct *next)
{
VM_BUG_ON(vma->anon_vma != next->anon_vma);
VM_BUG_ON_VMA(vma->anon_vma != next->anon_vma, vma);
unlink_anon_vmas(next);
}
include/linux/sched.h
+4 -2
View File
@@ -1935,11 +1935,13 @@ extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut,
#define tsk_used_math(p) ((p)->flags & PF_USED_MATH)
#define used_math() tsk_used_math(current)
/* __GFP_IO isn't allowed if PF_MEMALLOC_NOIO is set in current->flags */
/* __GFP_IO isn't allowed if PF_MEMALLOC_NOIO is set in current->flags
* __GFP_FS is also cleared as it implies __GFP_IO.
*/
static inline gfp_t memalloc_noio_flags(gfp_t flags)
{
if (unlikely(current->flags & PF_MEMALLOC_NOIO))
flags &= ~__GFP_IO;
flags &= ~(__GFP_IO | __GFP_FS);
return flags;
}
include/linux/screen_info.h
-8
View File
@@ -5,12 +5,4 @@
extern struct screen_info screen_info;
#define ORIG_X (screen_info.orig_x)
#define ORIG_Y (screen_info.orig_y)
#define ORIG_VIDEO_MODE (screen_info.orig_video_mode)
#define ORIG_VIDEO_COLS (screen_info.orig_video_cols)
#define ORIG_VIDEO_EGA_BX (screen_info.orig_video_ega_bx)
#define ORIG_VIDEO_LINES (screen_info.orig_video_lines)
#define ORIG_VIDEO_ISVGA (screen_info.orig_video_isVGA)
#define ORIG_VIDEO_POINTS (screen_info.orig_video_points)
#endif /* _SCREEN_INFO_H */
include/linux/slab.h
+1 -63
View File
@@ -158,31 +158,6 @@ size_t ksize(const void *);
#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long long)
#endif
#ifdef CONFIG_SLOB
/*
* Common fields provided in kmem_cache by all slab allocators
* This struct is either used directly by the allocator (SLOB)
* or the allocator must include definitions for all fields
* provided in kmem_cache_common in their definition of kmem_cache.
*
* Once we can do anonymous structs (C11 standard) we could put a
* anonymous struct definition in these allocators so that the
* separate allocations in the kmem_cache structure of SLAB and
* SLUB is no longer needed.
*/
struct kmem_cache {
unsigned int object_size;/* The original size of the object */
unsigned int size; /* The aligned/padded/added on size */
unsigned int align; /* Alignment as calculated */
unsigned long flags; /* Active flags on the slab */
const char *name; /* Slab name for sysfs */
int refcount; /* Use counter */
void (*ctor)(void *); /* Called on object slot creation */
struct list_head list; /* List of all slab caches on the system */
};
#endif /* CONFIG_SLOB */
/*
* Kmalloc array related definitions
*/
@@ -363,14 +338,6 @@ kmem_cache_alloc_node_trace(struct kmem_cache *s,
}
#endif /* CONFIG_TRACING */
#ifdef CONFIG_SLAB
#include <linux/slab_def.h>
#endif
#ifdef CONFIG_SLUB
#include <linux/slub_def.h>
#endif
extern void *kmalloc_order(size_t size, gfp_t flags, unsigned int order);
#ifdef CONFIG_TRACING
@@ -582,37 +549,15 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
* allocator where we care about the real place the memory allocation
* request comes from.
*/
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || \
(defined(CONFIG_SLAB) && defined(CONFIG_TRACING)) || \
(defined(CONFIG_SLOB) && defined(CONFIG_TRACING))
extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long);
#define kmalloc_track_caller(size, flags) \
__kmalloc_track_caller(size, flags, _RET_IP_)
#else
#define kmalloc_track_caller(size, flags) \
__kmalloc(size, flags)
#endif /* DEBUG_SLAB */
#ifdef CONFIG_NUMA
/*
* kmalloc_node_track_caller is a special version of kmalloc_node that
* records the calling function of the routine calling it for slab leak
* tracking instead of just the calling function (confusing, eh?).
* It's useful when the call to kmalloc_node comes from a widely-used
* standard allocator where we care about the real place the memory
* allocation request comes from.
*/
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || \
(defined(CONFIG_SLAB) && defined(CONFIG_TRACING)) || \
(defined(CONFIG_SLOB) && defined(CONFIG_TRACING))
extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long);
#define kmalloc_node_track_caller(size, flags, node) \
__kmalloc_node_track_caller(size, flags, node, \
_RET_IP_)
#else
#define kmalloc_node_track_caller(size, flags, node) \
__kmalloc_node(size, flags, node)
#endif
#else /* CONFIG_NUMA */
@@ -650,14 +595,7 @@ static inline void *kzalloc_node(size_t size, gfp_t flags, int node)
return kmalloc_node(size, flags | __GFP_ZERO, node);
}
/*
* Determine the size of a slab object
*/
static inline unsigned int kmem_cache_size(struct kmem_cache *s)
{
return s->object_size;
}
unsigned int kmem_cache_size(struct kmem_cache *s);
void __init kmem_cache_init_late(void);
#endif /* _LINUX_SLAB_H */
include/linux/slab_def.h
+3 -17
View File
@@ -8,6 +8,8 @@
*/
struct kmem_cache {
struct array_cache __percpu *cpu_cache;
/* 1) Cache tunables. Protected by slab_mutex */
unsigned int batchcount;
unsigned int limit;
@@ -71,23 +73,7 @@ struct kmem_cache {
struct memcg_cache_params *memcg_params;
#endif
/* 6) per-cpu/per-node data, touched during every alloc/free */
/*
* We put array[] at the end of kmem_cache, because we want to size
* this array to nr_cpu_ids slots instead of NR_CPUS
* (see kmem_cache_init())
* We still use [NR_CPUS] and not [1] or [0] because cache_cache
* is statically defined, so we reserve the max number of cpus.
*
* We also need to guarantee that the list is able to accomodate a
* pointer for each node since "nodelists" uses the remainder of
* available pointers.
*/
struct kmem_cache_node **node;
struct array_cache *array[NR_CPUS + MAX_NUMNODES];
/*
* Do not add fields after array[]
*/
struct kmem_cache_node *node[MAX_NUMNODES];
};
#endif /* _LINUX_SLAB_DEF_H */
include/linux/swap.h
+4 -18
View File
@@ -327,8 +327,10 @@ extern void lru_cache_add_active_or_unevictable(struct page *page,
extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
gfp_t gfp_mask, nodemask_t *mask);
extern int __isolate_lru_page(struct page *page, isolate_mode_t mode);
extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem,
gfp_t gfp_mask, bool noswap);
extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *memcg,
unsigned long nr_pages,
gfp_t gfp_mask,
bool may_swap);
extern unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
gfp_t gfp_mask, bool noswap,
struct zone *zone,
@@ -354,22 +356,6 @@ static inline int zone_reclaim(struct zone *z, gfp_t mask, unsigned int order)
extern int page_evictable(struct page *page);
extern void check_move_unevictable_pages(struct page **, int nr_pages);
extern unsigned long scan_unevictable_pages;
extern int scan_unevictable_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
#ifdef CONFIG_NUMA
extern int scan_unevictable_register_node(struct node *node);
extern void scan_unevictable_unregister_node(struct node *node);
#else
static inline int scan_unevictable_register_node(struct node *node)
{
return 0;
}
static inline void scan_unevictable_unregister_node(struct node *node)
{
}
#endif
extern int kswapd_run(int nid);
extern void kswapd_stop(int nid);
#ifdef CONFIG_MEMCG
include/linux/topology.h
+17
View File
@@ -119,11 +119,20 @@ static inline int numa_node_id(void)
* Use the accessor functions set_numa_mem(), numa_mem_id() and cpu_to_mem().
*/
DECLARE_PER_CPU(int, _numa_mem_);
extern int _node_numa_mem_[MAX_NUMNODES];
#ifndef set_numa_mem
static inline void set_numa_mem(int node)
{
this_cpu_write(_numa_mem_, node);
_node_numa_mem_[numa_node_id()] = node;
}
#endif
#ifndef node_to_mem_node
static inline int node_to_mem_node(int node)
{
return _node_numa_mem_[node];
}
#endif
@@ -146,6 +155,7 @@ static inline int cpu_to_mem(int cpu)
static inline void set_cpu_numa_mem(int cpu, int node)
{
per_cpu(_numa_mem_, cpu) = node;
_node_numa_mem_[cpu_to_node(cpu)] = node;
}
#endif
@@ -159,6 +169,13 @@ static inline int numa_mem_id(void)
}
#endif
#ifndef node_to_mem_node
static inline int node_to_mem_node(int node)
{
return node;
}
#endif
#ifndef cpu_to_mem
static inline int cpu_to_mem(int cpu)
{
include/linux/vm_event_item.h
+7
View File
@@ -72,6 +72,13 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
THP_ZERO_PAGE_ALLOC,
THP_ZERO_PAGE_ALLOC_FAILED,
#endif
#ifdef CONFIG_MEMORY_BALLOON
BALLOON_INFLATE,
BALLOON_DEFLATE,
#ifdef CONFIG_BALLOON_COMPACTION
BALLOON_MIGRATE,
#endif
#endif
#ifdef CONFIG_DEBUG_TLBFLUSH
#ifdef CONFIG_SMP
NR_TLB_REMOTE_FLUSH, /* cpu tried to flush others' tlbs */
include/linux/zsmalloc.h
+1 -1
View File
@@ -46,6 +46,6 @@ void *zs_map_object(struct zs_pool *pool, unsigned long handle,
enum zs_mapmode mm);
void zs_unmap_object(struct zs_pool *pool, unsigned long handle);
u64 zs_get_total_size_bytes(struct zs_pool *pool);
unsigned long zs_get_total_pages(struct zs_pool *pool);
#endif
include/uapi/linux/kernel-page-flags.h
+1
View File
@@ -31,6 +31,7 @@
#define KPF_KSM 21
#define KPF_THP 22
#define KPF_BALLOON 23
#endif /* _UAPILINUX_KERNEL_PAGE_FLAGS_H */
include/uapi/linux/prctl.h
+27
View File
@@ -1,6 +1,8 @@
#ifndef _LINUX_PRCTL_H
#define _LINUX_PRCTL_H
#include <linux/types.h>
/* Values to pass as first argument to prctl() */
#define PR_SET_PDEATHSIG 1 /* Second arg is a signal */
@@ -119,6 +121,31 @@
# define PR_SET_MM_ENV_END 11
# define PR_SET_MM_AUXV 12
# define PR_SET_MM_EXE_FILE 13
# define PR_SET_MM_MAP 14
# define PR_SET_MM_MAP_SIZE 15
/*
* This structure provides new memory descriptor
* map which mostly modifies /proc/pid/stat[m]
* output for a task. This mostly done in a
* sake of checkpoint/restore functionality.
*/
struct prctl_mm_map {
__u64 start_code; /* code section bounds */
__u64 end_code;
__u64 start_data; /* data section bounds */
__u64 end_data;
__u64 start_brk; /* heap for brk() syscall */
__u64 brk;
__u64 start_stack; /* stack starts at */
__u64 arg_start; /* command line arguments bounds */
__u64 arg_end;
__u64 env_start; /* environment variables bounds */
__u64 env_end;
__u64 *auxv; /* auxiliary vector */
__u32 auxv_size; /* vector size */
__u32 exe_fd; /* /proc/$pid/exe link file */
};
/*
* Set specific pid that is allowed to ptrace the current task.