bpf: Refine memcg-based memory accounting for xskmap maps

Extend xskmap memory accounting to include the memory taken by
the xsk_map_node structure.

Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201201215900.3569844-18-guro@fb.com

diff --git a/net/xdp/xskmap.c b/net/xdp/xskmap.c
index 66231ba..9fff1e6 100644 (file)
--- a/net/xdp/xskmap.c
+++ b/net/xdp/xskmap.c
@@ -16,7 +16,8 @@ static struct xsk_map_node *xsk_map_node_alloc(struct xsk_map *map,
 {
        struct xsk_map_node *node;
 
-       node = kzalloc(sizeof(*node), GFP_ATOMIC | __GFP_NOWARN);
+       node = bpf_map_kzalloc(&map->map, sizeof(*node),
+                              GFP_ATOMIC | __GFP_NOWARN);
        if (!node)
                return ERR_PTR(-ENOMEM);