diff options
Diffstat (limited to 'include')
29 files changed, 238 insertions, 404 deletions
diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h index de8bf89940f..a9fd248f5d4 100644 --- a/include/asm-generic/dma-mapping-common.h +++ b/include/asm-generic/dma-mapping-common.h @@ -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 diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 977e545a64c..081ff8826bf 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -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; diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h index f1a24b5c3b9..b58fd667f87 100644 --- a/include/asm-generic/sections.h +++ b/include/asm-generic/sections.h @@ -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 diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h index 089743ade73..9b0a15d06a4 100644 --- a/include/linux/balloon_compaction.h +++ b/include/linux/balloon_compaction.h @@ -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) -{ - 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) +static inline void balloon_devinfo_init(struct balloon_dev_info *balloon) { - /* - * 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) @@ -228,34 +161,24 @@ 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) -{ - return ERR_PTR(-EOPNOTSUPP); -} - -static inline void balloon_mapping_free(struct address_space *balloon_mapping) +static inline void balloon_page_insert(struct balloon_dev_info *balloon, + struct page *page) { - return; + __SetPageBalloon(page); + list_add(&page->lru, &balloon->pages); } -static inline void balloon_page_insert(struct page *page, - struct address_space *mapping, - struct list_head *head) +static inline void balloon_page_delete(struct page *page) { - list_add(&page->lru, head); + __ClearPageBalloon(page); + list_del(&page->lru); } -static inline void balloon_page_delete(struct page *page) +static inline bool __is_movable_balloon_page(struct page *page) { - list_del(&page->lru); + return false; } static inline bool balloon_page_movable(struct page *page) @@ -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 */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 518b46555b8..87be398166d 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -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) { diff --git a/include/linux/compaction.h b/include/linux/compaction.h index 01e3132820d..60bdf8dc02a 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -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; } diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h index 1c2fdaa2ffc..1ccaab44abc 100644 --- a/include/linux/genalloc.h +++ b/include/linux/genalloc.h @@ -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); diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 5e7219dc0fa..41b30fd4d04 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -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); diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 63579cb8d3d..ad9051bab26 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -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 diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 95624bed87e..e9e420b6d93 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -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) /* diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index e0752d204d9..19df5d85741 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -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) { diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index d9524c49d76..8f1a41951df 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -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); diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index f230a978e6b..3d385c81c15 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -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); diff --git a/include/linux/migrate.h b/include/linux/migrate.h index a2901c41466..01aad3ed89e 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -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 diff --git a/include/linux/mm.h b/include/linux/mm.h index 0f4196a0bc2..fa0d74e0642 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -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); diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h index 2f348d02f64..877ef226f90 100644 --- a/include/linux/mmdebug.h +++ b/include/linux/mmdebug.h @@ -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) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 318df705185..48bf12ef662 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -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) { diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 19191d39c4f..7ea069cd325 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -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); diff --git a/include/linux/rmap.h b/include/linux/rmap.h index be574506e6a..c0c2bce6b0b 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -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); } diff --git a/include/linux/sched.h b/include/linux/sched.h index 9c6353d9e63..5e63ba59258 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -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; } diff --git a/include/linux/screen_info.h b/include/linux/screen_info.h index 005bf3e38db..f0f8bad54be 100644 --- a/include/linux/screen_info.h +++ b/include/linux/screen_info.h @@ -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 */ diff --git a/include/linux/slab.h b/include/linux/slab.h index 1d9abb7d22a..c265bec6a57 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -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 */ diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h index 8235dfbb3b0..b869d1662ba 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h @@ -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 */ diff --git a/include/linux/swap.h b/include/linux/swap.h index 1b72060f093..37a585beef5 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -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 diff --git a/include/linux/topology.h b/include/linux/topology.h index dda6ee521e7..909b6e43b69 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -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) { diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index ced92345c96..730334cdf03 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -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 */ diff --git a/include/linux/zsmalloc.h b/include/linux/zsmalloc.h index e44d634e7fb..05c21476097 100644 --- a/include/linux/zsmalloc.h +++ b/include/linux/zsmalloc.h @@ -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 diff --git a/include/uapi/linux/kernel-page-flags.h b/include/uapi/linux/kernel-page-flags.h index 5116a0e4817..2f96d233c98 100644 --- a/include/uapi/linux/kernel-page-flags.h +++ b/include/uapi/linux/kernel-page-flags.h @@ -31,6 +31,7 @@ #define KPF_KSM 21 #define KPF_THP 22 +#define KPF_BALLOON 23 #endif /* _UAPILINUX_KERNEL_PAGE_FLAGS_H */ diff --git a/include/uapi/linux/prctl.h b/include/uapi/linux/prctl.h index 58afc04c107..513df75d0fc 100644 --- a/include/uapi/linux/prctl.h +++ b/include/uapi/linux/prctl.h @@ -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. |