linux-kernel - [PATCH net] net: enable memcg accounting for veth queues

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Message-ID: <0b28d49b-605c-ac1a-df85-643164e69039@openvz.org>
Date:   Fri, 29 Apr 2022 08:17:35 +0300
From:   Vasily Averin <vvs@...nvz.org>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Roman Gushchin <roman.gushchin@...ux.dev>,
        Vlastimil Babka <vbabka@...e.cz>,
        Shakeel Butt <shakeelb@...gle.com>, kernel@...nvz.org,
        linux-kernel@...r.kernel.org, Michal Hocko <mhocko@...e.com>,
        cgroups@...r.kernel.org, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net] net: enable memcg accounting for veth queues

veth netdevice defines own rx queues and allocates array containing
up to 4095 ~750-bytes-long 'struct veth_rq' elements. Such allocation
is quite huge and should be accounted to memcg.

Signed-off-by: Vasily Averin <vvs@...nvz.org>
---
 drivers/net/veth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index d29fb9759cc9..bd67f458641a 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -1310,7 +1310,7 @@ static int veth_alloc_queues(struct net_device *dev)
 	struct veth_priv *priv = netdev_priv(dev);
 	int i;
 
-	priv->rq = kcalloc(dev->num_rx_queues, sizeof(*priv->rq), GFP_KERNEL);
+	priv->rq = kcalloc(dev->num_rx_queues, sizeof(*priv->rq), GFP_KERNEL_ACCOUNT);
 	if (!priv->rq)
 		return -ENOMEM;
 
-- 
2.31.1