netdev - [PATCH bpf-next 06/35] bpf: refine memcg-based memory accounting for devmap maps

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Date:   Fri, 24 Jul 2020 17:03:41 -0700
From:   Roman Gushchin <guro@...com>
To:     <bpf@...r.kernel.org>
CC:     <netdev@...r.kernel.org>, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, <kernel-team@...com>,
        <linux-kernel@...r.kernel.org>, Roman Gushchin <guro@...com>
Subject: [PATCH bpf-next 06/35] bpf: refine memcg-based memory accounting for devmap maps

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

Signed-off-by: Roman Gushchin <guro@...com>
---
 kernel/bpf/devmap.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index 10abb06065bb..05bf93088063 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);
 
@@ -603,7 +603,8 @@ 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,
+	dev = kmalloc_node(sizeof(*dev),
+			   GFP_ATOMIC | __GFP_NOWARN | __GFP_ACCOUNT,
 			   dtab->map.numa_node);
 	if (!dev)
 		return ERR_PTR(-ENOMEM);
-- 
2.26.2