When memory allocation profiling is disabled, there is no need to swap
allocation tags during migration. Skip it to avoid unnecessary overhead.
Fixes: e0a955bf7f61 ("mm/codetag: add pgalloc_tag_copy()")
Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
lib/alloc_tag.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/lib/alloc_tag.c b/lib/alloc_tag.c
index 4c373f444eb1..4e5d7af3eaa2 100644
--- a/lib/alloc_tag.c
+++ b/lib/alloc_tag.c
@@ -197,6 +197,9 @@ void pgalloc_tag_swap(struct folio *new, struct folio *old)
union codetag_ref ref_old, ref_new;
struct alloc_tag *tag_old, *tag_new;
+ if (!mem_alloc_profiling_enabled())
+ return;
+
tag_old = pgalloc_tag_get(&old->page);
if (!tag_old)
return;
--
2.47.1.613.gc27f4b7a9f-goog
