diff options
Diffstat (limited to 'mm/page_owner.c')
| -rw-r--r-- | mm/page_owner.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/page_owner.c b/mm/page_owner.c index 23dcb2252c13..e20cddb78349 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -5,11 +5,12 @@ #include <linux/bootmem.h> #include <linux/stacktrace.h> #include <linux/page_owner.h> +#include <linux/jump_label.h> #include "internal.h" static bool page_owner_disabled = !IS_ENABLED(CONFIG_PAGE_OWNER_ENABLE_DEFAULT); -bool page_owner_inited __read_mostly; +DEFINE_STATIC_KEY_FALSE(page_owner_inited); static void init_early_allocated_pages(void); @@ -41,7 +42,7 @@ static void init_page_owner(void) if (page_owner_disabled) return; - page_owner_inited = true; + static_branch_enable(&page_owner_inited); init_early_allocated_pages(); } @@ -151,7 +152,7 @@ read_page_owner(struct file *file, char __user *buf, size_t count, loff_t *ppos) struct page *page; struct page_ext *page_ext; - if (!page_owner_inited) + if (!static_branch_unlikely(&page_owner_inited)) return -EINVAL; page = NULL; @@ -299,7 +300,7 @@ static int __init pageowner_init(void) { struct dentry *dentry; - if (!page_owner_inited) { + if (!static_branch_unlikely(&page_owner_inited)) { pr_info("page_owner is disabled\n"); return 0; } |