mm: memcontrol: account slab stats per lruvec

Josef's redesign of the balancing between slab caches and the page cache requires slab cache statistics at the lruvec level. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Johannes Weiner <[email protected]> Acked-by: Vladimir Davydov <[email protected]> Cc: Josef Bacik <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Rik van Riel <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
ambv · Jul 6, 2017 · 7779f21 · 7779f21
1 parent 00f3ca2
commit 7779f21
Show file tree

Hide file tree

Showing 3 changed files with 7 additions and 27 deletions.
diff --git a/mm/slab.c b/mm/slab.c
@@ -1425,11 +1425,9 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags,
 
 	nr_pages = (1 << cachep->gfporder);
 	if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
-		add_node_page_state(page_pgdat(page),
-			NR_SLAB_RECLAIMABLE, nr_pages);
+		mod_lruvec_page_state(page, NR_SLAB_RECLAIMABLE, nr_pages);
 	else
-		add_node_page_state(page_pgdat(page),
-			NR_SLAB_UNRECLAIMABLE, nr_pages);
+		mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE, nr_pages);
 
 	__SetPageSlab(page);
 	/* Record if ALLOC_NO_WATERMARKS was set when allocating the slab */
@@ -1459,11 +1457,9 @@ static void kmem_freepages(struct kmem_cache *cachep, struct page *page)
 	kmemcheck_free_shadow(page, order);
 
 	if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
-		sub_node_page_state(page_pgdat(page),
-				NR_SLAB_RECLAIMABLE, nr_freed);
+		mod_lruvec_page_state(page, NR_SLAB_RECLAIMABLE, -nr_freed);
 	else
-		sub_node_page_state(page_pgdat(page),
-				NR_SLAB_UNRECLAIMABLE, nr_freed);
+		mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE, -nr_freed);
 
 	BUG_ON(!PageSlab(page));
 	__ClearPageSlabPfmemalloc(page);

diff --git a/mm/slab.h b/mm/slab.h
@@ -274,34 +274,18 @@ static __always_inline int memcg_charge_slab(struct page *page,
 					     gfp_t gfp, int order,
 					     struct kmem_cache *s)
 {
-	int ret;
-
 	if (!memcg_kmem_enabled())
 		return 0;
 	if (is_root_cache(s))
 		return 0;
-
-	ret = memcg_kmem_charge_memcg(page, gfp, order, s->memcg_params.memcg);
-	if (ret)
-		return ret;
-
-	mod_memcg_page_state(page,
-			     (s->flags & SLAB_RECLAIM_ACCOUNT) ?
-			     NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
-			     1 << order);
-	return 0;
+	return memcg_kmem_charge_memcg(page, gfp, order, s->memcg_params.memcg);
 }
 
 static __always_inline void memcg_uncharge_slab(struct page *page, int order,
 						struct kmem_cache *s)
 {
 	if (!memcg_kmem_enabled())
 		return;
-
-	mod_memcg_page_state(page,
-			     (s->flags & SLAB_RECLAIM_ACCOUNT) ?
-			     NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
-			     -(1 << order));
 	memcg_kmem_uncharge(page, order);
 }
 

diff --git a/mm/slub.c b/mm/slub.c
@@ -1615,7 +1615,7 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node)
 	if (!page)
 		return NULL;
 
-	mod_node_page_state(page_pgdat(page),
+	mod_lruvec_page_state(page,
 		(s->flags & SLAB_RECLAIM_ACCOUNT) ?
 		NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
 		1 << oo_order(oo));
@@ -1655,7 +1655,7 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
 
 	kmemcheck_free_shadow(page, compound_order(page));
 
-	mod_node_page_state(page_pgdat(page),
+	mod_lruvec_page_state(page,
 		(s->flags & SLAB_RECLAIM_ACCOUNT) ?
 		NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
 		-pages);