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Diffstat (limited to 'net')
-rw-r--r--net/core/dev.c16
-rw-r--r--net/core/flow.c60
-rw-r--r--net/iucv/iucv.c124
-rw-r--r--net/xfrm/xfrm_policy.c1
4 files changed, 80 insertions, 121 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 3fec23cdeb80..6372117f653f 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -8008,18 +8008,13 @@ out:
}
EXPORT_SYMBOL_GPL(dev_change_net_namespace);
-static int dev_cpu_callback(struct notifier_block *nfb,
- unsigned long action,
- void *ocpu)
+static int dev_cpu_dead(unsigned int oldcpu)
{
struct sk_buff **list_skb;
struct sk_buff *skb;
- unsigned int cpu, oldcpu = (unsigned long)ocpu;
+ unsigned int cpu;
struct softnet_data *sd, *oldsd;
- if (action != CPU_DEAD && action != CPU_DEAD_FROZEN)
- return NOTIFY_OK;
-
local_irq_disable();
cpu = smp_processor_id();
sd = &per_cpu(softnet_data, cpu);
@@ -8069,10 +8064,9 @@ static int dev_cpu_callback(struct notifier_block *nfb,
input_queue_head_incr(oldsd);
}
- return NOTIFY_OK;
+ return 0;
}
-
/**
* netdev_increment_features - increment feature set by one
* @all: current feature set
@@ -8406,7 +8400,9 @@ static int __init net_dev_init(void)
open_softirq(NET_TX_SOFTIRQ, net_tx_action);
open_softirq(NET_RX_SOFTIRQ, net_rx_action);
- hotcpu_notifier(dev_cpu_callback, 0);
+ rc = cpuhp_setup_state_nocalls(CPUHP_NET_DEV_DEAD, "net/dev:dead",
+ NULL, dev_cpu_dead);
+ WARN_ON(rc < 0);
dst_subsys_init();
rc = 0;
out:
diff --git a/net/core/flow.c b/net/core/flow.c
index 18e8893d4be5..f765c11d8df5 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -417,28 +417,20 @@ static int flow_cache_cpu_prepare(struct flow_cache *fc, int cpu)
return 0;
}
-static int flow_cache_cpu(struct notifier_block *nfb,
- unsigned long action,
- void *hcpu)
+static int flow_cache_cpu_up_prep(unsigned int cpu, struct hlist_node *node)
{
- struct flow_cache *fc = container_of(nfb, struct flow_cache,
- hotcpu_notifier);
- int res, cpu = (unsigned long) hcpu;
+ struct flow_cache *fc = hlist_entry_safe(node, struct flow_cache, node);
+
+ return flow_cache_cpu_prepare(fc, cpu);
+}
+
+static int flow_cache_cpu_dead(unsigned int cpu, struct hlist_node *node)
+{
+ struct flow_cache *fc = hlist_entry_safe(node, struct flow_cache, node);
struct flow_cache_percpu *fcp = per_cpu_ptr(fc->percpu, cpu);
- switch (action) {
- case CPU_UP_PREPARE:
- case CPU_UP_PREPARE_FROZEN:
- res = flow_cache_cpu_prepare(fc, cpu);
- if (res)
- return notifier_from_errno(res);
- break;
- case CPU_DEAD:
- case CPU_DEAD_FROZEN:
- __flow_cache_shrink(fc, fcp, 0);
- break;
- }
- return NOTIFY_OK;
+ __flow_cache_shrink(fc, fcp, 0);
+ return 0;
}
int flow_cache_init(struct net *net)
@@ -465,18 +457,8 @@ int flow_cache_init(struct net *net)
if (!fc->percpu)
return -ENOMEM;
- cpu_notifier_register_begin();
-
- for_each_online_cpu(i) {
- if (flow_cache_cpu_prepare(fc, i))
- goto err;
- }
- fc->hotcpu_notifier = (struct notifier_block){
- .notifier_call = flow_cache_cpu,
- };
- __register_hotcpu_notifier(&fc->hotcpu_notifier);
-
- cpu_notifier_register_done();
+ if (cpuhp_state_add_instance(CPUHP_NET_FLOW_PREPARE, &fc->node))
+ goto err;
setup_timer(&fc->rnd_timer, flow_cache_new_hashrnd,
(unsigned long) fc);
@@ -492,8 +474,6 @@ err:
fcp->hash_table = NULL;
}
- cpu_notifier_register_done();
-
free_percpu(fc->percpu);
fc->percpu = NULL;
@@ -507,7 +487,8 @@ void flow_cache_fini(struct net *net)
struct flow_cache *fc = &net->xfrm.flow_cache_global;
del_timer_sync(&fc->rnd_timer);
- unregister_hotcpu_notifier(&fc->hotcpu_notifier);
+
+ cpuhp_state_remove_instance_nocalls(CPUHP_NET_FLOW_PREPARE, &fc->node);
for_each_possible_cpu(i) {
struct flow_cache_percpu *fcp = per_cpu_ptr(fc->percpu, i);
@@ -519,3 +500,14 @@ void flow_cache_fini(struct net *net)
fc->percpu = NULL;
}
EXPORT_SYMBOL(flow_cache_fini);
+
+void __init flow_cache_hp_init(void)
+{
+ int ret;
+
+ ret = cpuhp_setup_state_multi(CPUHP_NET_FLOW_PREPARE,
+ "net/flow:prepare",
+ flow_cache_cpu_up_prep,
+ flow_cache_cpu_dead);
+ WARN_ON(ret < 0);
+}
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index 88a2a3ba4212..8f7ef167c45a 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -639,7 +639,7 @@ static void iucv_disable(void)
put_online_cpus();
}
-static void free_iucv_data(int cpu)
+static int iucv_cpu_dead(unsigned int cpu)
{
kfree(iucv_param_irq[cpu]);
iucv_param_irq[cpu] = NULL;
@@ -647,9 +647,10 @@ static void free_iucv_data(int cpu)
iucv_param[cpu] = NULL;
kfree(iucv_irq_data[cpu]);
iucv_irq_data[cpu] = NULL;
+ return 0;
}
-static int alloc_iucv_data(int cpu)
+static int iucv_cpu_prepare(unsigned int cpu)
{
/* Note: GFP_DMA used to get memory below 2G */
iucv_irq_data[cpu] = kmalloc_node(sizeof(struct iucv_irq_data),
@@ -671,58 +672,38 @@ static int alloc_iucv_data(int cpu)
return 0;
out_free:
- free_iucv_data(cpu);
+ iucv_cpu_dead(cpu);
return -ENOMEM;
}
-static int iucv_cpu_notify(struct notifier_block *self,
- unsigned long action, void *hcpu)
+static int iucv_cpu_online(unsigned int cpu)
{
- cpumask_t cpumask;
- long cpu = (long) hcpu;
-
- switch (action) {
- case CPU_UP_PREPARE:
- case CPU_UP_PREPARE_FROZEN:
- if (alloc_iucv_data(cpu))
- return notifier_from_errno(-ENOMEM);
- break;
- case CPU_UP_CANCELED:
- case CPU_UP_CANCELED_FROZEN:
- case CPU_DEAD:
- case CPU_DEAD_FROZEN:
- free_iucv_data(cpu);
- break;
- case CPU_ONLINE:
- case CPU_ONLINE_FROZEN:
- case CPU_DOWN_FAILED:
- case CPU_DOWN_FAILED_FROZEN:
- if (!iucv_path_table)
- break;
- smp_call_function_single(cpu, iucv_declare_cpu, NULL, 1);
- break;
- case CPU_DOWN_PREPARE:
- case CPU_DOWN_PREPARE_FROZEN:
- if (!iucv_path_table)
- break;
- cpumask_copy(&cpumask, &iucv_buffer_cpumask);
- cpumask_clear_cpu(cpu, &cpumask);
- if (cpumask_empty(&cpumask))
- /* Can't offline last IUCV enabled cpu. */
- return notifier_from_errno(-EINVAL);
- smp_call_function_single(cpu, iucv_retrieve_cpu, NULL, 1);
- if (cpumask_empty(&iucv_irq_cpumask))
- smp_call_function_single(
- cpumask_first(&iucv_buffer_cpumask),
- iucv_allow_cpu, NULL, 1);
- break;
- }
- return NOTIFY_OK;
+ if (!iucv_path_table)
+ return 0;
+ iucv_declare_cpu(NULL);
+ return 0;
}
-static struct notifier_block __refdata iucv_cpu_notifier = {
- .notifier_call = iucv_cpu_notify,
-};
+static int iucv_cpu_down_prep(unsigned int cpu)
+{
+ cpumask_t cpumask;
+
+ if (!iucv_path_table)
+ return 0;
+
+ cpumask_copy(&cpumask, &iucv_buffer_cpumask);
+ cpumask_clear_cpu(cpu, &cpumask);
+ if (cpumask_empty(&cpumask))
+ /* Can't offline last IUCV enabled cpu. */
+ return -EINVAL;
+
+ iucv_retrieve_cpu(NULL);
+ if (!cpumask_empty(&iucv_irq_cpumask))
+ return 0;
+ smp_call_function_single(cpumask_first(&iucv_buffer_cpumask),
+ iucv_allow_cpu, NULL, 1);
+ return 0;
+}
/**
* iucv_sever_pathid
@@ -2027,6 +2008,7 @@ struct iucv_interface iucv_if = {
};
EXPORT_SYMBOL(iucv_if);
+static enum cpuhp_state iucv_online;
/**
* iucv_init
*
@@ -2035,7 +2017,6 @@ EXPORT_SYMBOL(iucv_if);
static int __init iucv_init(void)
{
int rc;
- int cpu;
if (!MACHINE_IS_VM) {
rc = -EPROTONOSUPPORT;
@@ -2054,23 +2035,19 @@ static int __init iucv_init(void)
goto out_int;
}
- cpu_notifier_register_begin();
-
- for_each_online_cpu(cpu) {
- if (alloc_iucv_data(cpu)) {
- rc = -ENOMEM;
- goto out_free;
- }
- }
- rc = __register_hotcpu_notifier(&iucv_cpu_notifier);
+ rc = cpuhp_setup_state(CPUHP_NET_IUCV_PREPARE, "net/iucv:prepare",
+ iucv_cpu_prepare, iucv_cpu_dead);
if (rc)
- goto out_free;
-
- cpu_notifier_register_done();
+ goto out_dev;
+ rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "net/iucv:online",
+ iucv_cpu_online, iucv_cpu_down_prep);
+ if (rc < 0)
+ goto out_prep;
+ iucv_online = rc;
rc = register_reboot_notifier(&iucv_reboot_notifier);
if (rc)
- goto out_cpu;
+ goto out_remove_hp;
ASCEBC(iucv_error_no_listener, 16);
ASCEBC(iucv_error_no_memory, 16);
ASCEBC(iucv_error_pathid, 16);
@@ -2084,15 +2061,11 @@ static int __init iucv_init(void)
out_reboot:
unregister_reboot_notifier(&iucv_reboot_notifier);
-out_cpu:
- cpu_notifier_register_begin();
- __unregister_hotcpu_notifier(&iucv_cpu_notifier);
-out_free:
- for_each_possible_cpu(cpu)
- free_iucv_data(cpu);
-
- cpu_notifier_register_done();
-
+out_remove_hp:
+ cpuhp_remove_state(iucv_online);
+out_prep:
+ cpuhp_remove_state(CPUHP_NET_IUCV_PREPARE);
+out_dev:
root_device_unregister(iucv_root);
out_int:
unregister_external_irq(EXT_IRQ_IUCV, iucv_external_interrupt);
@@ -2110,7 +2083,6 @@ out:
static void __exit iucv_exit(void)
{
struct iucv_irq_list *p, *n;
- int cpu;
spin_lock_irq(&iucv_queue_lock);
list_for_each_entry_safe(p, n, &iucv_task_queue, list)
@@ -2119,11 +2091,9 @@ static void __exit iucv_exit(void)
kfree(p);
spin_unlock_irq(&iucv_queue_lock);
unregister_reboot_notifier(&iucv_reboot_notifier);
- cpu_notifier_register_begin();
- __unregister_hotcpu_notifier(&iucv_cpu_notifier);
- for_each_possible_cpu(cpu)
- free_iucv_data(cpu);
- cpu_notifier_register_done();
+
+ cpuhp_remove_state_nocalls(iucv_online);
+ cpuhp_remove_state(CPUHP_NET_IUCV_PREPARE);
root_device_unregister(iucv_root);
bus_unregister(&iucv_bus);
unregister_external_irq(EXT_IRQ_IUCV, iucv_external_interrupt);
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 5bf7e1bfeac7..177e208e8ff5 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -3113,6 +3113,7 @@ static struct pernet_operations __net_initdata xfrm_net_ops = {
void __init xfrm_init(void)
{
+ flow_cache_hp_init();
register_pernet_subsys(&xfrm_net_ops);
seqcount_init(&xfrm_policy_hash_generation);
xfrm_input_init();
generated by cgit (git 2.34.1) at 2024-06-10 01:40:49 +0000