page_ext_put(page_ext);
}
+static inline struct alloc_tag *pgalloc_tag_get(struct page *page)
+{
+ struct alloc_tag *tag = NULL;
+
+ if (mem_alloc_profiling_enabled()) {
+ union codetag_ref *ref = get_page_tag_ref(page);
+
+ alloc_tag_sub_check(ref);
+ if (ref && ref->ct)
+ tag = ct_to_alloc_tag(ref->ct);
+ put_page_tag_ref(ref);
+ }
+
+ return tag;
+}
+
+static inline void pgalloc_tag_sub_pages(struct alloc_tag *tag, unsigned int nr)
+{
+ if (mem_alloc_profiling_enabled() && tag)
+ this_cpu_sub(tag->counters->bytes, PAGE_SIZE * nr);
+}
+
#else /* CONFIG_MEM_ALLOC_PROFILING */
static inline void pgalloc_tag_add(struct page *page, struct task_struct *task,
unsigned int nr) {}
static inline void pgalloc_tag_sub(struct page *page, unsigned int nr) {}
static inline void pgalloc_tag_split(struct page *page, unsigned int nr) {}
+static inline struct alloc_tag *pgalloc_tag_get(struct page *page) { return NULL; }
+static inline void pgalloc_tag_sub_pages(struct alloc_tag *tag, unsigned int nr) {}
#endif /* CONFIG_MEM_ALLOC_PROFILING */
{
/* get PageHead before we drop reference */
int head = PageHead(page);
+ struct alloc_tag *tag = pgalloc_tag_get(page);
if (put_page_testzero(page))
free_the_page(page, order);
- else if (!head)
+ else if (!head) {
+ pgalloc_tag_sub_pages(tag, (1 << order) - 1);
while (order-- > 0)
free_the_page(page + (1 << order), order);
+ }
}
EXPORT_SYMBOL(__free_pages);