[PATCH bpf-next v8 11/34] bpf: refine memcg-based memory accounting for devmap maps

Roman Gushchin
2020-11-25T03:03:53Z

Include map metadata and the node size (struct bpf_dtab_netdev)
into the accounting.

Signed-off-by: Roman Gushchin <guro@fb.com>
---
kernel/bpf/devmap.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index 2b5ca93c17de..a4dfe544946f 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -175,7 +175,7 @@ static struct bpf_map *dev_map_alloc(union bpf_attr *attr)
if (!capable(CAP_NET_ADMIN))
return ERR_PTR(-EPERM);

- dtab = kzalloc(sizeof(*dtab), GFP_USER);
+ dtab = kzalloc(sizeof(*dtab), GFP_USER | __GFP_ACCOUNT);
if (!dtab)
return ERR_PTR(-ENOMEM);

@@ -602,8 +602,9 @@ static struct bpf_dtab_netdev *__dev_map_alloc_node(struct net *net,
struct bpf_prog *prog = NULL;
struct bpf_dtab_netdev *dev;

- dev = kmalloc_node(sizeof(*dev), GFP_ATOMIC | __GFP_NOWARN,
- dtab->map.numa_node);
+ dev = bpf_map_kmalloc_node(&dtab->map, sizeof(*dev),
+ GFP_ATOMIC | __GFP_NOWARN | __GFP_ACCOUNT,
+ dtab->map.numa_node);
if (!dev)
return ERR_PTR(-ENOMEM);

--
2.26.2