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authorJason Xing <kernelxing@tencent.com>2023-02-14 05:14:10 +0100
committerDavid S. Miller <davem@davemloft.net>2023-02-15 11:25:21 +0100
commitfe33311c3e371855c4f4c0ab8a5fce5b9a9fdafd (patch)
tree781a78ac2b3b88d7825a1237c5026dbef511309f /include/net
parentnetlink-specs: add rx-push to ethtool family (diff)
downloadlinux-fe33311c3e371855c4f4c0ab8a5fce5b9a9fdafd.tar.xz
linux-fe33311c3e371855c4f4c0ab8a5fce5b9a9fdafd.zip
net: no longer support SOCK_REFCNT_DEBUG feature
Commit e48c414ee61f ("[INET]: Generalise the TCP sock ID lookup routines") commented out the definition of SOCK_REFCNT_DEBUG in 2005 and later another commit 463c84b97f24 ("[NET]: Introduce inet_connection_sock") removed it. Since we could track all of them through bpf and kprobe related tools and the feature could print loads of information which might not be that helpful even under a little bit pressure, the whole feature which has been inactive for many years is no longer supported. Link: https://lore.kernel.org/lkml/20230211065153.54116-1-kerneljasonxing@gmail.com/ Suggested-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Jason Xing <kernelxing@tencent.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Acked-by: Wenjia Zhang <wenjia@linux.ibm.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/sock.h28
1 files changed, 0 insertions, 28 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 937e842dc930..2cb258fde072 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1349,9 +1349,6 @@ struct proto {
char name[32];
struct list_head node;
-#ifdef SOCK_REFCNT_DEBUG
- atomic_t socks;
-#endif
int (*diag_destroy)(struct sock *sk, int err);
} __randomize_layout;
@@ -1359,31 +1356,6 @@ int proto_register(struct proto *prot, int alloc_slab);
void proto_unregister(struct proto *prot);
int sock_load_diag_module(int family, int protocol);
-#ifdef SOCK_REFCNT_DEBUG
-static inline void sk_refcnt_debug_inc(struct sock *sk)
-{
- atomic_inc(&sk->sk_prot->socks);
-}
-
-static inline void sk_refcnt_debug_dec(struct sock *sk)
-{
- atomic_dec(&sk->sk_prot->socks);
- printk(KERN_DEBUG "%s socket %p released, %d are still alive\n",
- sk->sk_prot->name, sk, atomic_read(&sk->sk_prot->socks));
-}
-
-static inline void sk_refcnt_debug_release(const struct sock *sk)
-{
- if (refcount_read(&sk->sk_refcnt) != 1)
- printk(KERN_DEBUG "Destruction of the %s socket %p delayed, refcnt=%d\n",
- sk->sk_prot->name, sk, refcount_read(&sk->sk_refcnt));
-}
-#else /* SOCK_REFCNT_DEBUG */
-#define sk_refcnt_debug_inc(sk) do { } while (0)
-#define sk_refcnt_debug_dec(sk) do { } while (0)
-#define sk_refcnt_debug_release(sk) do { } while (0)
-#endif /* SOCK_REFCNT_DEBUG */
-
INDIRECT_CALLABLE_DECLARE(bool tcp_stream_memory_free(const struct sock *sk, int wake));
static inline int sk_forward_alloc_get(const struct sock *sk)