diff options
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 58 |
1 files changed, 35 insertions, 23 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 4e3dff13eb70..ad316d2e1fee 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -90,6 +90,8 @@ static struct kmem_cache *mm_slot_cache __read_mostly; * @hash: hash collision list * @mm_node: khugepaged scan list headed in khugepaged_scan.mm_head * @mm: the mm that this information is valid for + * @nr_pte_mapped_thp: number of pte mapped THP + * @pte_mapped_thp: address array corresponding pte mapped THP */ struct mm_slot { struct hlist_node hash; @@ -124,18 +126,18 @@ static ssize_t scan_sleep_millisecs_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", khugepaged_scan_sleep_millisecs); + return sysfs_emit(buf, "%u\n", khugepaged_scan_sleep_millisecs); } static ssize_t scan_sleep_millisecs_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { - unsigned long msecs; + unsigned int msecs; int err; - err = kstrtoul(buf, 10, &msecs); - if (err || msecs > UINT_MAX) + err = kstrtouint(buf, 10, &msecs); + if (err) return -EINVAL; khugepaged_scan_sleep_millisecs = msecs; @@ -152,18 +154,18 @@ static ssize_t alloc_sleep_millisecs_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", khugepaged_alloc_sleep_millisecs); + return sysfs_emit(buf, "%u\n", khugepaged_alloc_sleep_millisecs); } static ssize_t alloc_sleep_millisecs_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { - unsigned long msecs; + unsigned int msecs; int err; - err = kstrtoul(buf, 10, &msecs); - if (err || msecs > UINT_MAX) + err = kstrtouint(buf, 10, &msecs); + if (err) return -EINVAL; khugepaged_alloc_sleep_millisecs = msecs; @@ -180,17 +182,17 @@ static ssize_t pages_to_scan_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", khugepaged_pages_to_scan); + return sysfs_emit(buf, "%u\n", khugepaged_pages_to_scan); } static ssize_t pages_to_scan_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { + unsigned int pages; int err; - unsigned long pages; - err = kstrtoul(buf, 10, &pages); - if (err || !pages || pages > UINT_MAX) + err = kstrtouint(buf, 10, &pages); + if (err || !pages) return -EINVAL; khugepaged_pages_to_scan = pages; @@ -205,7 +207,7 @@ static ssize_t pages_collapsed_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", khugepaged_pages_collapsed); + return sysfs_emit(buf, "%u\n", khugepaged_pages_collapsed); } static struct kobj_attribute pages_collapsed_attr = __ATTR_RO(pages_collapsed); @@ -214,7 +216,7 @@ static ssize_t full_scans_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", khugepaged_full_scans); + return sysfs_emit(buf, "%u\n", khugepaged_full_scans); } static struct kobj_attribute full_scans_attr = __ATTR_RO(full_scans); @@ -223,7 +225,7 @@ static ssize_t khugepaged_defrag_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { return single_hugepage_flag_show(kobj, attr, buf, - TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG); + TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG); } static ssize_t khugepaged_defrag_store(struct kobject *kobj, struct kobj_attribute *attr, @@ -248,7 +250,7 @@ static ssize_t khugepaged_max_ptes_none_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", khugepaged_max_ptes_none); + return sysfs_emit(buf, "%u\n", khugepaged_max_ptes_none); } static ssize_t khugepaged_max_ptes_none_store(struct kobject *kobj, struct kobj_attribute *attr, @@ -273,7 +275,7 @@ static ssize_t khugepaged_max_ptes_swap_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", khugepaged_max_ptes_swap); + return sysfs_emit(buf, "%u\n", khugepaged_max_ptes_swap); } static ssize_t khugepaged_max_ptes_swap_store(struct kobject *kobj, @@ -297,10 +299,10 @@ static struct kobj_attribute khugepaged_max_ptes_swap_attr = khugepaged_max_ptes_swap_store); static ssize_t khugepaged_max_ptes_shared_show(struct kobject *kobj, - struct kobj_attribute *attr, - char *buf) + struct kobj_attribute *attr, + char *buf) { - return sprintf(buf, "%u\n", khugepaged_max_ptes_shared); + return sysfs_emit(buf, "%u\n", khugepaged_max_ptes_shared); } static ssize_t khugepaged_max_ptes_shared_store(struct kobject *kobj, @@ -1414,7 +1416,11 @@ static int khugepaged_add_pte_mapped_thp(struct mm_struct *mm, } /** - * Try to collapse a pte-mapped THP for mm at address haddr. + * collapse_pte_mapped_thp - Try to collapse a pte-mapped THP for mm at + * address haddr. + * + * @mm: process address space where collapse happens + * @addr: THP collapse address * * This function checks whether all the PTEs in the PMD are pointing to the * right THP. If so, retract the page table so the THP can refault in with @@ -1605,6 +1611,12 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff) /** * collapse_file - collapse filemap/tmpfs/shmem pages into huge one. * + * @mm: process address space where collapse happens + * @file: file that collapse on + * @start: collapse start address + * @hpage: new allocated huge page for collapse + * @node: appointed node the new huge page allocate from + * * Basic scheme is simple, details are more complex: * - allocate and lock a new huge page; * - scan page cache replacing old pages with the new one @@ -1845,9 +1857,9 @@ out_unlock: } if (is_shmem) - __inc_node_page_state(new_page, NR_SHMEM_THPS); + __inc_lruvec_page_state(new_page, NR_SHMEM_THPS); else { - __inc_node_page_state(new_page, NR_FILE_THPS); + __inc_lruvec_page_state(new_page, NR_FILE_THPS); filemap_nr_thps_inc(mapping); } |