diff options
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 62 |
1 files changed, 38 insertions, 24 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index ec2bb93f7431..57d08156acb1 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -163,12 +163,17 @@ static struct shrinker huge_zero_page_shrinker = { static ssize_t enabled_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { + const char *output; + if (test_bit(TRANSPARENT_HUGEPAGE_FLAG, &transparent_hugepage_flags)) - return sprintf(buf, "[always] madvise never\n"); - else if (test_bit(TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG, &transparent_hugepage_flags)) - return sprintf(buf, "always [madvise] never\n"); + output = "[always] madvise never"; + else if (test_bit(TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG, + &transparent_hugepage_flags)) + output = "always [madvise] never"; else - return sprintf(buf, "always madvise [never]\n"); + output = "always madvise [never]"; + + return sysfs_emit(buf, "%s\n", output); } static ssize_t enabled_store(struct kobject *kobj, @@ -200,11 +205,11 @@ static struct kobj_attribute enabled_attr = __ATTR(enabled, 0644, enabled_show, enabled_store); ssize_t single_hugepage_flag_show(struct kobject *kobj, - struct kobj_attribute *attr, char *buf, - enum transparent_hugepage_flag flag) + struct kobj_attribute *attr, char *buf, + enum transparent_hugepage_flag flag) { - return sprintf(buf, "%d\n", - !!test_bit(flag, &transparent_hugepage_flags)); + return sysfs_emit(buf, "%d\n", + !!test_bit(flag, &transparent_hugepage_flags)); } ssize_t single_hugepage_flag_store(struct kobject *kobj, @@ -232,15 +237,24 @@ ssize_t single_hugepage_flag_store(struct kobject *kobj, static ssize_t defrag_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_DIRECT_FLAG, &transparent_hugepage_flags)) - return sprintf(buf, "[always] defer defer+madvise madvise never\n"); - if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_FLAG, &transparent_hugepage_flags)) - return sprintf(buf, "always [defer] defer+madvise madvise never\n"); - if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_OR_MADV_FLAG, &transparent_hugepage_flags)) - return sprintf(buf, "always defer [defer+madvise] madvise never\n"); - if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG, &transparent_hugepage_flags)) - return sprintf(buf, "always defer defer+madvise [madvise] never\n"); - return sprintf(buf, "always defer defer+madvise madvise [never]\n"); + const char *output; + + if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_DIRECT_FLAG, + &transparent_hugepage_flags)) + output = "[always] defer defer+madvise madvise never"; + else if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_FLAG, + &transparent_hugepage_flags)) + output = "always [defer] defer+madvise madvise never"; + else if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_OR_MADV_FLAG, + &transparent_hugepage_flags)) + output = "always defer [defer+madvise] madvise never"; + else if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG, + &transparent_hugepage_flags)) + output = "always defer defer+madvise [madvise] never"; + else + output = "always defer defer+madvise madvise [never]"; + + return sysfs_emit(buf, "%s\n", output); } static ssize_t defrag_store(struct kobject *kobj, @@ -281,10 +295,10 @@ static struct kobj_attribute defrag_attr = __ATTR(defrag, 0644, defrag_show, defrag_store); static ssize_t use_zero_page_show(struct kobject *kobj, - struct kobj_attribute *attr, char *buf) + struct kobj_attribute *attr, char *buf) { return single_hugepage_flag_show(kobj, attr, buf, - TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG); + TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG); } static ssize_t use_zero_page_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) @@ -296,9 +310,9 @@ static struct kobj_attribute use_zero_page_attr = __ATTR(use_zero_page, 0644, use_zero_page_show, use_zero_page_store); static ssize_t hpage_pmd_size_show(struct kobject *kobj, - struct kobj_attribute *attr, char *buf) + struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%lu\n", HPAGE_PMD_SIZE); + return sysfs_emit(buf, "%lu\n", HPAGE_PMD_SIZE); } static struct kobj_attribute hpage_pmd_size_attr = __ATTR_RO(hpage_pmd_size); @@ -2321,7 +2335,7 @@ void vma_adjust_trans_huge(struct vm_area_struct *vma, static void unmap_page(struct page *page) { - enum ttu_flags ttu_flags = TTU_IGNORE_MLOCK | TTU_IGNORE_ACCESS | + enum ttu_flags ttu_flags = TTU_IGNORE_MLOCK | TTU_RMAP_LOCKED | TTU_SPLIT_HUGE_PMD; bool unmap_success; @@ -2710,9 +2724,9 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) spin_unlock(&ds_queue->split_queue_lock); if (mapping) { if (PageSwapBacked(head)) - __dec_node_page_state(head, NR_SHMEM_THPS); + __dec_lruvec_page_state(head, NR_SHMEM_THPS); else - __dec_node_page_state(head, NR_FILE_THPS); + __dec_lruvec_page_state(head, NR_FILE_THPS); } __split_huge_page(page, list, end, flags); |