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-rw-r--r--mm/page_owner.c28
1 files changed, 7 insertions, 21 deletions
diff --git a/mm/page_owner.c b/mm/page_owner.c
index d3cf5d336ccf..de1916ac3e24 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -24,12 +24,10 @@ struct page_owner {
short last_migrate_reason;
gfp_t gfp_mask;
depot_stack_handle_t handle;
-#ifdef CONFIG_DEBUG_PAGEALLOC
depot_stack_handle_t free_handle;
-#endif
};
-static bool page_owner_disabled = true;
+static bool page_owner_enabled = false;
DEFINE_STATIC_KEY_FALSE(page_owner_inited);
static depot_stack_handle_t dummy_handle;
@@ -44,7 +42,7 @@ static int __init early_page_owner_param(char *buf)
return -EINVAL;
if (strcmp(buf, "on") == 0)
- page_owner_disabled = false;
+ page_owner_enabled = true;
return 0;
}
@@ -52,10 +50,7 @@ early_param("page_owner", early_page_owner_param);
static bool need_page_owner(void)
{
- if (page_owner_disabled)
- return false;
-
- return true;
+ return page_owner_enabled;
}
static __always_inline depot_stack_handle_t create_dummy_stack(void)
@@ -84,7 +79,7 @@ static noinline void register_early_stack(void)
static void init_page_owner(void)
{
- if (page_owner_disabled)
+ if (!page_owner_enabled)
return;
register_dummy_stack();
@@ -148,25 +143,18 @@ void __reset_page_owner(struct page *page, unsigned int order)
{
int i;
struct page_ext *page_ext;
-#ifdef CONFIG_DEBUG_PAGEALLOC
depot_stack_handle_t handle = 0;
struct page_owner *page_owner;
- if (debug_pagealloc_enabled())
- handle = save_stack(GFP_NOWAIT | __GFP_NOWARN);
-#endif
+ handle = save_stack(GFP_NOWAIT | __GFP_NOWARN);
page_ext = lookup_page_ext(page);
if (unlikely(!page_ext))
return;
for (i = 0; i < (1 << order); i++) {
__clear_bit(PAGE_EXT_OWNER_ACTIVE, &page_ext->flags);
-#ifdef CONFIG_DEBUG_PAGEALLOC
- if (debug_pagealloc_enabled()) {
- page_owner = get_page_owner(page_ext);
- page_owner->free_handle = handle;
- }
-#endif
+ page_owner = get_page_owner(page_ext);
+ page_owner->free_handle = handle;
page_ext = page_ext_next(page_ext);
}
}
@@ -450,7 +438,6 @@ void __dump_page_owner(struct page *page)
stack_trace_print(entries, nr_entries, 0);
}
-#ifdef CONFIG_DEBUG_PAGEALLOC
handle = READ_ONCE(page_owner->free_handle);
if (!handle) {
pr_alert("page_owner free stack trace missing\n");
@@ -459,7 +446,6 @@ void __dump_page_owner(struct page *page)
pr_alert("page last free stack trace:\n");
stack_trace_print(entries, nr_entries, 0);
}
-#endif
if (page_owner->last_migrate_reason != -1)
pr_alert("page has been migrated, last migrate reason: %s\n",