diff options
| -rw-r--r-- | mm/huge_memory.c | 71 |
1 files changed, 50 insertions, 21 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index db522e160cc..763711121ef 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -487,41 +487,68 @@ static struct attribute_group khugepaged_attr_group = { .attrs = khugepaged_attr, .name = "khugepaged", }; -#endif /* CONFIG_SYSFS */ -static int __init hugepage_init(void) +static int __init hugepage_init_sysfs(struct kobject **hugepage_kobj) { int err; -#ifdef CONFIG_SYSFS - static struct kobject *hugepage_kobj; -#endif - err = -EINVAL; - if (!has_transparent_hugepage()) { - transparent_hugepage_flags = 0; - goto out; - } - -#ifdef CONFIG_SYSFS - err = -ENOMEM; - hugepage_kobj = kobject_create_and_add("transparent_hugepage", mm_kobj); - if (unlikely(!hugepage_kobj)) { + *hugepage_kobj = kobject_create_and_add("transparent_hugepage", mm_kobj); + if (unlikely(!*hugepage_kobj)) { printk(KERN_ERR "hugepage: failed kobject create\n"); - goto out; + return -ENOMEM; } - err = sysfs_create_group(hugepage_kobj, &hugepage_attr_group); + err = sysfs_create_group(*hugepage_kobj, &hugepage_attr_group); if (err) { printk(KERN_ERR "hugepage: failed register hugeage group\n"); - goto out; + goto delete_obj; } - err = sysfs_create_group(hugepage_kobj, &khugepaged_attr_group); + err = sysfs_create_group(*hugepage_kobj, &khugepaged_attr_group); if (err) { printk(KERN_ERR "hugepage: failed register hugeage group\n"); - goto out; + goto remove_hp_group; } -#endif + + return 0; + +remove_hp_group: + sysfs_remove_group(*hugepage_kobj, &hugepage_attr_group); +delete_obj: + kobject_put(*hugepage_kobj); + return err; +} + +static void __init hugepage_exit_sysfs(struct kobject *hugepage_kobj) +{ + sysfs_remove_group(hugepage_kobj, &khugepaged_attr_group); + sysfs_remove_group(hugepage_kobj, &hugepage_attr_group); + kobject_put(hugepage_kobj); +} +#else +static inline int hugepage_init_sysfs(struct kobject **hugepage_kobj) +{ + return 0; +} + +static inline void hugepage_exit_sysfs(struct kobject *hugepage_kobj) +{ +} +#endif /* CONFIG_SYSFS */ + +static int __init hugepage_init(void) +{ + int err; + struct kobject *hugepage_kobj; + + if (!has_transparent_hugepage()) { + transparent_hugepage_flags = 0; + return -EINVAL; + } + + err = hugepage_init_sysfs(&hugepage_kobj); + if (err) + return err; err = khugepaged_slab_init(); if (err) @@ -545,7 +572,9 @@ static int __init hugepage_init(void) set_recommended_min_free_kbytes(); + return 0; out: + hugepage_exit_sysfs(hugepage_kobj); return err; } module_init(hugepage_init) |