2 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index b42715294147..5b228b785377 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -24,6 +24,7 @@ enum stat_item {
         ALLOC_FROM_PARTIAL,     /* Cpu slab acquired from partial list */
         ALLOC_SLAB,             /* Cpu slab acquired from page allocator */
         ALLOC_REFILL,           /* Refill cpu slab from slab freelist */
+        ALLOC_NODE_MISMATCH,    /* Switching cpu slab */
         FREE_SLAB,              /* Slab freed to the page allocator */
         CPUSLAB_FLUSH,          /* Abandoning of the cpu slab */
         DEACTIVATE_FULL,        /* Cpu slab was full when deactivated */
diff --git a/mm/slub.c b/mm/slub.c
index 41a15c1d8068..e00b7732f556 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1966,6 +1966,7 @@ static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
                 goto new_slab;
 
         if (unlikely(!node_match(c, node))) {
+                stat(s, ALLOC_NODE_MISMATCH);
                 deactivate_slab(s, c);
                 goto new_slab;
         }
@@ -4671,6 +4672,7 @@ STAT_ATTR(FREE_REMOVE_PARTIAL, free_remove_partial);
 STAT_ATTR(ALLOC_FROM_PARTIAL, alloc_from_partial);
 STAT_ATTR(ALLOC_SLAB, alloc_slab);
 STAT_ATTR(ALLOC_REFILL, alloc_refill);
+STAT_ATTR(ALLOC_NODE_MISMATCH, alloc_node_mismatch);
 STAT_ATTR(FREE_SLAB, free_slab);
 STAT_ATTR(CPUSLAB_FLUSH, cpuslab_flush);
 STAT_ATTR(DEACTIVATE_FULL, deactivate_full);
@@ -4730,6 +4732,7 @@ static struct attribute *slab_attrs[] = {
         &alloc_from_partial_attr.attr,
         &alloc_slab_attr.attr,
         &alloc_refill_attr.attr,
+        &alloc_node_mismatch_attr.attr,
         &free_slab_attr.attr,
         &cpuslab_flush_attr.attr,
         &deactivate_full_attr.attr,