13 files changed, 42 insertions, 68 deletions

diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index c179734f143f..4bf54b377255 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -1157,7 +1157,6 @@ int __init rfcomm_init_ttys(void)
         if (!rfcomm_tty_driver)
                 return -ENOMEM;
 
-        rfcomm_tty_driver->owner        = THIS_MODULE;
         rfcomm_tty_driver->driver_name  = "rfcomm";
         rfcomm_tty_driver->name         = "rfcomm";
         rfcomm_tty_driver->major        = RFCOMM_TTY_MAJOR;
diff --git a/net/core/dev.c b/net/core/dev.c
index 0090809af7bd..0f3eb7d79a2d 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -134,7 +134,7 @@
 #include <linux/inetdevice.h>
 #include <linux/cpu_rmap.h>
 #include <linux/net_tstamp.h>
-#include <linux/jump_label.h>
+#include <linux/static_key.h>
 #include <net/flow_keys.h>
 
 #include "net-sysfs.h"
@@ -1439,11 +1439,11 @@ int call_netdevice_notifiers(unsigned long val, struct net_device *dev)
 }
 EXPORT_SYMBOL(call_netdevice_notifiers);
 
-static struct jump_label_key netstamp_needed __read_mostly;
+static struct static_key netstamp_needed __read_mostly;
 #ifdef HAVE_JUMP_LABEL
-/* We are not allowed to call jump_label_dec() from irq context
+/* We are not allowed to call static_key_slow_dec() from irq context
  * If net_disable_timestamp() is called from irq context, defer the
- * jump_label_dec() calls.
+ * static_key_slow_dec() calls.
  */
 static atomic_t netstamp_needed_deferred;
 #endif
@@ -1455,12 +1455,12 @@ void net_enable_timestamp(void)
 
         if (deferred) {
                 while (--deferred)
-                        jump_label_dec(&netstamp_needed);
+                        static_key_slow_dec(&netstamp_needed);
                 return;
         }
 #endif
         WARN_ON(in_interrupt());
-        jump_label_inc(&netstamp_needed);
+        static_key_slow_inc(&netstamp_needed);
 }
 EXPORT_SYMBOL(net_enable_timestamp);
 
@@ -1472,19 +1472,19 @@ void net_disable_timestamp(void)
                 return;
         }
 #endif
-        jump_label_dec(&netstamp_needed);
+        static_key_slow_dec(&netstamp_needed);
 }
 EXPORT_SYMBOL(net_disable_timestamp);
 
 static inline void net_timestamp_set(struct sk_buff *skb)
 {
         skb->tstamp.tv64 = 0;
-        if (static_branch(&netstamp_needed))
+        if (static_key_false(&netstamp_needed))
                 __net_timestamp(skb);
 }
 
 #define net_timestamp_check(COND, SKB)                  \
-        if (static_branch(&netstamp_needed)) {          \
+        if (static_key_false(&netstamp_needed)) {               \
                 if ((COND) && !(SKB)->tstamp.tv64)      \
                         __net_timestamp(SKB);           \
         }                                               \
@@ -2651,7 +2651,7 @@ EXPORT_SYMBOL(__skb_get_rxhash);
 struct rps_sock_flow_table __rcu *rps_sock_flow_table __read_mostly;
 EXPORT_SYMBOL(rps_sock_flow_table);
 
-struct jump_label_key rps_needed __read_mostly;
+struct static_key rps_needed __read_mostly;
 
 static struct rps_dev_flow *
 set_rps_cpu(struct net_device *dev, struct sk_buff *skb,
@@ -2936,7 +2936,7 @@ int netif_rx(struct sk_buff *skb)
 
         trace_netif_rx(skb);
 #ifdef CONFIG_RPS
-        if (static_branch(&rps_needed)) {
+        if (static_key_false(&rps_needed)) {
                 struct rps_dev_flow voidflow, *rflow = &voidflow;
                 int cpu;
 
@@ -3300,7 +3300,7 @@ int netif_receive_skb(struct sk_buff *skb)
                 return NET_RX_SUCCESS;
 
 #ifdef CONFIG_RPS
-        if (static_branch(&rps_needed)) {
+        if (static_key_false(&rps_needed)) {
                 struct rps_dev_flow voidflow, *rflow = &voidflow;
                 int cpu, ret;
 
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index a1727cda03d7..495586232aa1 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -608,10 +608,10 @@ static ssize_t store_rps_map(struct netdev_rx_queue *queue,
         spin_unlock(&rps_map_lock);
 
         if (map)
-                jump_label_inc(&rps_needed);
+                static_key_slow_inc(&rps_needed);
         if (old_map) {
                 kfree_rcu(old_map, rcu);
-                jump_label_dec(&rps_needed);
+                static_key_slow_dec(&rps_needed);
         }
         free_cpumask_var(mask);
         return len;
diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c
index 4dacc44637ef..ba6900f73900 100644
--- a/net/core/netprio_cgroup.c
+++ b/net/core/netprio_cgroup.c
@@ -23,9 +23,8 @@
 #include <net/sock.h>
 #include <net/netprio_cgroup.h>
 
-static struct cgroup_subsys_state *cgrp_create(struct cgroup_subsys *ss,
-                                               struct cgroup *cgrp);
-static void cgrp_destroy(struct cgroup_subsys *ss, struct cgroup *cgrp);
+static struct cgroup_subsys_state *cgrp_create(struct cgroup *cgrp);
+static void cgrp_destroy(struct cgroup *cgrp);
 static int cgrp_populate(struct cgroup_subsys *ss, struct cgroup *cgrp);
 
 struct cgroup_subsys net_prio_subsys = {
@@ -121,8 +120,7 @@ static void update_netdev_tables(void)
         rtnl_unlock();
 }
 
-static struct cgroup_subsys_state *cgrp_create(struct cgroup_subsys *ss,
-                                                 struct cgroup *cgrp)
+static struct cgroup_subsys_state *cgrp_create(struct cgroup *cgrp)
 {
         struct cgroup_netprio_state *cs;
         int ret;
@@ -146,7 +144,7 @@ static struct cgroup_subsys_state *cgrp_create(struct cgroup_subsys *ss,
         return &cs->css;
 }
 
-static void cgrp_destroy(struct cgroup_subsys *ss, struct cgroup *cgrp)
+static void cgrp_destroy(struct cgroup *cgrp)
 {
         struct cgroup_netprio_state *cs;
         struct net_device *dev;
diff --git a/net/core/sock.c b/net/core/sock.c
index 216719cb5c7f..9be6d0d6c533 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -111,7 +111,7 @@
 #include <linux/init.h>
 #include <linux/highmem.h>
 #include <linux/user_namespace.h>
-#include <linux/jump_label.h>
+#include <linux/static_key.h>
 #include <linux/memcontrol.h>
 
 #include <asm/uaccess.h>
@@ -160,19 +160,19 @@ int mem_cgroup_sockets_init(struct cgroup *cgrp, struct cgroup_subsys *ss)
 out:
         list_for_each_entry_continue_reverse(proto, &proto_list, node)
                 if (proto->destroy_cgroup)
-                        proto->destroy_cgroup(cgrp, ss);
+                        proto->destroy_cgroup(cgrp);
         mutex_unlock(&proto_list_mutex);
         return ret;
 }
 
-void mem_cgroup_sockets_destroy(struct cgroup *cgrp, struct cgroup_subsys *ss)
+void mem_cgroup_sockets_destroy(struct cgroup *cgrp)
 {
         struct proto *proto;
 
         mutex_lock(&proto_list_mutex);
         list_for_each_entry_reverse(proto, &proto_list, node)
                 if (proto->destroy_cgroup)
-                        proto->destroy_cgroup(cgrp, ss);
+                        proto->destroy_cgroup(cgrp);
         mutex_unlock(&proto_list_mutex);
 }
 #endif
@@ -184,7 +184,7 @@ void mem_cgroup_sockets_destroy(struct cgroup *cgrp, struct cgroup_subsys *ss)
 static struct lock_class_key af_family_keys[AF_MAX];
 static struct lock_class_key af_family_slock_keys[AF_MAX];
 
-struct jump_label_key memcg_socket_limit_enabled;
+struct static_key memcg_socket_limit_enabled;
 EXPORT_SYMBOL(memcg_socket_limit_enabled);
 
 /*
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index d05559d4d9cd..0c2850874254 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -69,9 +69,9 @@ static int rps_sock_flow_sysctl(ctl_table *table, int write,
                 if (sock_table != orig_sock_table) {
                         rcu_assign_pointer(rps_sock_flow_table, sock_table);
                         if (sock_table)
-                                jump_label_inc(&rps_needed);
+                                static_key_slow_inc(&rps_needed);
                         if (orig_sock_table) {
-                                jump_label_dec(&rps_needed);
+                                static_key_slow_dec(&rps_needed);
                                 synchronize_rcu();
                                 vfree(orig_sock_table);
                         }
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index 86f3b885b4f3..c48adc565e92 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -1857,11 +1857,6 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
         return CIPSO_V4_HDR_LEN + ret_val;
 }
 
-static void opt_kfree_rcu(struct rcu_head *head)
-{
-        kfree(container_of(head, struct ip_options_rcu, rcu));
-}
-
 /**
  * cipso_v4_sock_setattr - Add a CIPSO option to a socket
  * @sk: the socket
@@ -1938,7 +1933,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
         }
         rcu_assign_pointer(sk_inet->inet_opt, opt);
         if (old)
-                call_rcu(&old->rcu, opt_kfree_rcu);
+                kfree_rcu(old, rcu);
 
         return 0;
 
@@ -2005,7 +2000,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
         req_inet = inet_rsk(req);
         opt = xchg(&req_inet->opt, opt);
         if (opt)
-                call_rcu(&opt->rcu, opt_kfree_rcu);
+                kfree_rcu(opt, rcu);
 
         return 0;
 
@@ -2075,7 +2070,7 @@ static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
                  * remove the entire option struct */
                 *opt_ptr = NULL;
                 hdr_delta = opt->opt.optlen;
-                call_rcu(&opt->rcu, opt_kfree_rcu);
+                kfree_rcu(opt, rcu);
         }
 
         return hdr_delta;
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index ca50d9f9f8c1..2fd0fba77124 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -445,11 +445,6 @@ out:
 }
 
 
-static void opt_kfree_rcu(struct rcu_head *head)
-{
-        kfree(container_of(head, struct ip_options_rcu, rcu));
-}
-
 /*
  *      Socket option code for IP. This is the end of the line after any
  *      TCP,UDP etc options on an IP socket.
@@ -526,7 +521,7 @@ static int do_ip_setsockopt(struct sock *sk, int level,
                 }
                 rcu_assign_pointer(inet->inet_opt, opt);
                 if (old)
-                        call_rcu(&old->rcu, opt_kfree_rcu);
+                        kfree_rcu(old, rcu);
                 break;
         }
         case IP_PKTINFO:
diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c
index 49978788a9dc..e795272fbe9e 100644
--- a/net/ipv4/tcp_memcontrol.c
+++ b/net/ipv4/tcp_memcontrol.c
@@ -94,7 +94,7 @@ create_files:
 }
 EXPORT_SYMBOL(tcp_init_cgroup);
 
-void tcp_destroy_cgroup(struct cgroup *cgrp, struct cgroup_subsys *ss)
+void tcp_destroy_cgroup(struct cgroup *cgrp)
 {
         struct mem_cgroup *memcg = mem_cgroup_from_cont(cgrp);
         struct cg_proto *cg_proto;
@@ -111,7 +111,7 @@ void tcp_destroy_cgroup(struct cgroup *cgrp, struct cgroup_subsys *ss)
         val = res_counter_read_u64(&tcp->tcp_memory_allocated, RES_LIMIT);
 
         if (val != RESOURCE_MAX)
-                jump_label_dec(&memcg_socket_limit_enabled);
+                static_key_slow_dec(&memcg_socket_limit_enabled);
 }
 EXPORT_SYMBOL(tcp_destroy_cgroup);
 
@@ -143,9 +143,9 @@ static int tcp_update_limit(struct mem_cgroup *memcg, u64 val)
                                              net->ipv4.sysctl_tcp_mem[i]);
 
         if (val == RESOURCE_MAX && old_lim != RESOURCE_MAX)
-                jump_label_dec(&memcg_socket_limit_enabled);
+                static_key_slow_dec(&memcg_socket_limit_enabled);
         else if (old_lim == RESOURCE_MAX && val != RESOURCE_MAX)
-                jump_label_inc(&memcg_socket_limit_enabled);
+                static_key_slow_inc(&memcg_socket_limit_enabled);
 
         return 0;
 }
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index 253695d43fd9..6b9d5a0e42f9 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -122,7 +122,6 @@ static int __init ircomm_tty_init(void)
                 return -ENOMEM;
         }
 
-        driver->owner           = THIS_MODULE;
         driver->driver_name     = "ircomm";
         driver->name            = "ircomm";
         driver->major           = IRCOMM_TTY_MAJOR;
@@ -366,16 +365,12 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
 static int ircomm_tty_open(struct tty_struct *tty, struct file *filp)
 {
         struct ircomm_tty_cb *self;
-        unsigned int line;
+        unsigned int line = tty->index;
         unsigned long   flags;
         int ret;
 
         IRDA_DEBUG(2, "%s()\n", __func__ );
 
-        line = tty->index;
-        if (line >= IRCOMM_TTY_PORTS)
-                return -ENODEV;
-
         /* Check if instance already exists */
         self = hashbin_lock_find(ircomm_tty, line, NULL);
         if (!self) {
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index be1361b5f7ad..49aaefd99635 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -413,12 +413,6 @@ struct mesh_path *mesh_path_lookup_by_idx(int idx, struct ieee80211_sub_if_data
         return NULL;
 }
 
-static void mesh_gate_node_reclaim(struct rcu_head *rp)
-{
-        struct mpath_node *node = container_of(rp, struct mpath_node, rcu);
-        kfree(node);
-}
-
 /**
  * mesh_path_add_gate - add the given mpath to a mesh gate to our path table
  * @mpath: gate path to add to table
@@ -479,7 +473,7 @@ static int mesh_gate_del(struct mesh_table *tbl, struct mesh_path *mpath)
                 if (gate->mpath == mpath) {
                         spin_lock_bh(&tbl->gates_lock);
                         hlist_del_rcu(&gate->list);
-                        call_rcu(&gate->rcu, mesh_gate_node_reclaim);
+                        kfree_rcu(gate, rcu);
                         spin_unlock_bh(&tbl->gates_lock);
                         mpath->sdata->u.mesh.num_gates--;
                         mpath->is_gate = false;
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index b4e8ff05b301..e1b7e051332e 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -56,7 +56,7 @@ struct list_head nf_hooks[NFPROTO_NUMPROTO][NF_MAX_HOOKS] __read_mostly;
 EXPORT_SYMBOL(nf_hooks);
 
 #if defined(CONFIG_JUMP_LABEL)
-struct jump_label_key nf_hooks_needed[NFPROTO_NUMPROTO][NF_MAX_HOOKS];
+struct static_key nf_hooks_needed[NFPROTO_NUMPROTO][NF_MAX_HOOKS];
 EXPORT_SYMBOL(nf_hooks_needed);
 #endif
 
@@ -77,7 +77,7 @@ int nf_register_hook(struct nf_hook_ops *reg)
         list_add_rcu(&reg->list, elem->list.prev);
         mutex_unlock(&nf_hook_mutex);
 #if defined(CONFIG_JUMP_LABEL)
-        jump_label_inc(&nf_hooks_needed[reg->pf][reg->hooknum]);
+        static_key_slow_inc(&nf_hooks_needed[reg->pf][reg->hooknum]);
 #endif
         return 0;
 }
@@ -89,7 +89,7 @@ void nf_unregister_hook(struct nf_hook_ops *reg)
         list_del_rcu(&reg->list);
         mutex_unlock(&nf_hook_mutex);
 #if defined(CONFIG_JUMP_LABEL)
-        jump_label_dec(&nf_hooks_needed[reg->pf][reg->hooknum]);
+        static_key_slow_dec(&nf_hooks_needed[reg->pf][reg->hooknum]);
 #endif
         synchronize_net();
 }
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index f84fdc3a7f27..1afaa284fcd7 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -22,9 +22,8 @@
 #include <net/sock.h>
 #include <net/cls_cgroup.h>
 
-static struct cgroup_subsys_state *cgrp_create(struct cgroup_subsys *ss,
-                                               struct cgroup *cgrp);
-static void cgrp_destroy(struct cgroup_subsys *ss, struct cgroup *cgrp);
+static struct cgroup_subsys_state *cgrp_create(struct cgroup *cgrp);
+static void cgrp_destroy(struct cgroup *cgrp);
 static int cgrp_populate(struct cgroup_subsys *ss, struct cgroup *cgrp);
 
 struct cgroup_subsys net_cls_subsys = {
@@ -51,8 +50,7 @@ static inline struct cgroup_cls_state *task_cls_state(struct task_struct *p)
                             struct cgroup_cls_state, css);
 }
 
-static struct cgroup_subsys_state *cgrp_create(struct cgroup_subsys *ss,
-                                                 struct cgroup *cgrp)
+static struct cgroup_subsys_state *cgrp_create(struct cgroup *cgrp)
 {
         struct cgroup_cls_state *cs;
 
@@ -66,7 +64,7 @@ static struct cgroup_subsys_state *cgrp_create(struct cgroup_subsys *ss,
         return &cs->css;
 }
 
-static void cgrp_destroy(struct cgroup_subsys *ss, struct cgroup *cgrp)
+static void cgrp_destroy(struct cgroup *cgrp)
 {
         kfree(cgrp_cls_state(cgrp));
 }