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| author | Eric Dumazet <edumazet@google.com> | 2017-02-01 20:47:59 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-02 23:34:19 -0500 |
| commit | 8fe809a992639b2013c0d8da2ba55cdea28a959a (patch) | |
| tree | 6f6fd0428d83432fa0b469773c3b9690cb117d2e /net/core | |
| parent | 661091093918657ab544fb8ca91a5ab172a986dc (diff) | |
| download | lwn-8fe809a992639b2013c0d8da2ba55cdea28a959a.tar.gz lwn-8fe809a992639b2013c0d8da2ba55cdea28a959a.zip | |
net: add LINUX_MIB_PFMEMALLOCDROP counter
Debugging issues caused by pfmemalloc is often tedious.
Add a new SNMP counter to more easily diagnose these problems.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Josef Bacik <jbacik@fb.com>
Acked-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/filter.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 1e00737e3bc3..0b753cbb2536 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -76,9 +76,10 @@ int sk_filter_trim_cap(struct sock *sk, struct sk_buff *skb, unsigned int cap) * allow SOCK_MEMALLOC sockets to use it as this socket is * helping free memory */ - if (skb_pfmemalloc(skb) && !sock_flag(sk, SOCK_MEMALLOC)) + if (skb_pfmemalloc(skb) && !sock_flag(sk, SOCK_MEMALLOC)) { + NET_INC_STATS(sock_net(sk), LINUX_MIB_PFMEMALLOCDROP); return -ENOMEM; - + } err = BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb); if (err) return err; |