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-rw-r--r--include/net/sctp/sctp.h1
-rw-r--r--include/net/sock.h2
-rw-r--r--include/net/tcp.h2
-rw-r--r--net/core/sock.c10
-rw-r--r--net/ipv4/proc.c3
-rw-r--r--net/ipv4/tcp.c8
-rw-r--r--net/ipv4/tcp_ipv4.c4
-rw-r--r--net/ipv6/tcp_ipv6.c2
-rw-r--r--net/sctp/protocol.c6
-rw-r--r--net/sctp/socket.c6
-rw-r--r--net/unix/af_unix.c1
11 files changed, 29 insertions, 16 deletions
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 23797506f593..bbb7742195b0 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -138,6 +138,7 @@ void sctp_write_space(struct sock *sk);
unsigned int sctp_poll(struct file *file, struct socket *sock,
poll_table *wait);
void sctp_sock_rfree(struct sk_buff *skb);
+extern struct percpu_counter sctp_sockets_allocated;
/*
* sctp/primitive.c
diff --git a/include/net/sock.h b/include/net/sock.h
index 00cd486d362f..a2a3890959c4 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -649,7 +649,7 @@ struct proto {
/* Memory pressure */
void (*enter_memory_pressure)(struct sock *sk);
atomic_t *memory_allocated; /* Current allocated memory. */
- atomic_t *sockets_allocated; /* Current number of sockets. */
+ struct percpu_counter *sockets_allocated; /* Current number of sockets. */
/*
* Pressure flag: try to collapse.
* Technical note: it is used by multiple contexts non atomically.
diff --git a/include/net/tcp.h b/include/net/tcp.h
index e8ae90a8c35e..cbca3b8a133d 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -238,7 +238,7 @@ extern int sysctl_tcp_slow_start_after_idle;
extern int sysctl_tcp_max_ssthresh;
extern atomic_t tcp_memory_allocated;
-extern atomic_t tcp_sockets_allocated;
+extern struct percpu_counter tcp_sockets_allocated;
extern int tcp_memory_pressure;
/*
diff --git a/net/core/sock.c b/net/core/sock.c
index a4e840e5a053..7a081b647bf9 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1071,7 +1071,7 @@ struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
newsk->sk_sleep = NULL;
if (newsk->sk_prot->sockets_allocated)
- atomic_inc(newsk->sk_prot->sockets_allocated);
+ percpu_counter_inc(newsk->sk_prot->sockets_allocated);
}
out:
return newsk;
@@ -1463,8 +1463,12 @@ int __sk_mem_schedule(struct sock *sk, int size, int kind)
}
if (prot->memory_pressure) {
- if (!*prot->memory_pressure ||
- prot->sysctl_mem[2] > atomic_read(prot->sockets_allocated) *
+ int alloc;
+
+ if (!*prot->memory_pressure)
+ return 1;
+ alloc = percpu_counter_read_positive(prot->sockets_allocated);
+ if (prot->sysctl_mem[2] > alloc *
sk_mem_pages(sk->sk_wmem_queued +
atomic_read(&sk->sk_rmem_alloc) +
sk->sk_forward_alloc))
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 731789bb499f..4944b47ad628 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -55,7 +55,8 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
sock_prot_inuse_get(net, &tcp_prot),
atomic_read(&tcp_orphan_count),
- tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
+ tcp_death_row.tw_count,
+ (int)percpu_counter_sum_positive(&tcp_sockets_allocated),
atomic_read(&tcp_memory_allocated));
seq_printf(seq, "UDP: inuse %d mem %d\n",
sock_prot_inuse_get(net, &udp_prot),
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 044224a341eb..e6fade9ebf62 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -290,9 +290,12 @@ EXPORT_SYMBOL(sysctl_tcp_rmem);
EXPORT_SYMBOL(sysctl_tcp_wmem);
atomic_t tcp_memory_allocated; /* Current allocated memory. */
-atomic_t tcp_sockets_allocated; /* Current number of TCP sockets. */
-
EXPORT_SYMBOL(tcp_memory_allocated);
+
+/*
+ * Current number of TCP sockets.
+ */
+struct percpu_counter tcp_sockets_allocated;
EXPORT_SYMBOL(tcp_sockets_allocated);
/*
@@ -2685,6 +2688,7 @@ void __init tcp_init(void)
BUILD_BUG_ON(sizeof(struct tcp_skb_cb) > sizeof(skb->cb));
+ percpu_counter_init(&tcp_sockets_allocated, 0);
tcp_hashinfo.bind_bucket_cachep =
kmem_cache_create("tcp_bind_bucket",
sizeof(struct inet_bind_bucket), 0,
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index cab2458f86fd..26b9030747cc 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1797,7 +1797,7 @@ static int tcp_v4_init_sock(struct sock *sk)
sk->sk_sndbuf = sysctl_tcp_wmem[1];
sk->sk_rcvbuf = sysctl_tcp_rmem[1];
- atomic_inc(&tcp_sockets_allocated);
+ percpu_counter_inc(&tcp_sockets_allocated);
return 0;
}
@@ -1845,7 +1845,7 @@ void tcp_v4_destroy_sock(struct sock *sk)
sk->sk_sndmsg_page = NULL;
}
- atomic_dec(&tcp_sockets_allocated);
+ percpu_counter_dec(&tcp_sockets_allocated);
}
EXPORT_SYMBOL(tcp_v4_destroy_sock);
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index f259c9671f3e..8702b06cb60a 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1830,7 +1830,7 @@ static int tcp_v6_init_sock(struct sock *sk)
sk->sk_sndbuf = sysctl_tcp_wmem[1];
sk->sk_rcvbuf = sysctl_tcp_rmem[1];
- atomic_inc(&tcp_sockets_allocated);
+ percpu_counter_inc(&tcp_sockets_allocated);
return 0;
}
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index a8ca743241ee..d5ea232c9126 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -102,6 +102,8 @@ struct sock *sctp_get_ctl_sock(void)
/* Set up the proc fs entry for the SCTP protocol. */
static __init int sctp_proc_init(void)
{
+ if (percpu_counter_init(&sctp_sockets_allocated, 0))
+ goto out_nomem;
#ifdef CONFIG_PROC_FS
if (!proc_net_sctp) {
struct proc_dir_entry *ent;
@@ -110,7 +112,7 @@ static __init int sctp_proc_init(void)
ent->owner = THIS_MODULE;
proc_net_sctp = ent;
} else
- goto out_nomem;
+ goto out_free_percpu;
}
if (sctp_snmp_proc_init())
@@ -135,6 +137,8 @@ out_snmp_proc_init:
proc_net_sctp = NULL;
remove_proc_entry("sctp", init_net.proc_net);
}
+out_free_percpu:
+ percpu_counter_destroy(&sctp_sockets_allocated);
out_nomem:
return -ENOMEM;
#else
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ba81fe3ccab8..a2de585888d0 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -114,7 +114,7 @@ extern int sysctl_sctp_wmem[3];
static int sctp_memory_pressure;
static atomic_t sctp_memory_allocated;
-static atomic_t sctp_sockets_allocated;
+struct percpu_counter sctp_sockets_allocated;
static void sctp_enter_memory_pressure(struct sock *sk)
{
@@ -3613,7 +3613,7 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
sp->hmac = NULL;
SCTP_DBG_OBJCNT_INC(sock);
- atomic_inc(&sctp_sockets_allocated);
+ percpu_counter_inc(&sctp_sockets_allocated);
local_bh_disable();
sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
@@ -3632,7 +3632,7 @@ SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
/* Release our hold on the endpoint. */
ep = sctp_sk(sk)->ep;
sctp_endpoint_free(ep);
- atomic_dec(&sctp_sockets_allocated);
+ percpu_counter_dec(&sctp_sockets_allocated);
local_bh_disable();
sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
local_bh_enable();
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 3a35a6e8bf91..5aaf23e43f1d 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -571,7 +571,6 @@ static const struct proto_ops unix_seqpacket_ops = {
static struct proto unix_proto = {
.name = "UNIX",
.owner = THIS_MODULE,
- .sockets_allocated = &unix_nr_socks,
.obj_size = sizeof(struct unix_sock),
};
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-12 22:49:20 +0200