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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2016-11-03 15:50:04 +0100
committerThomas Gleixner <tglx@linutronix.de>2016-11-09 23:45:28 +0100
commitf0bf90def3528cebed45ebd81d9b5d0fa17d7422 (patch)
tree88169b4d9b748055249150799a581e75c80c5990 /net/core
parent517bbed90635a17cf27450fb385af0e502413bea (diff)
downloadblackbird-op-linux-f0bf90def3528cebed45ebd81d9b5d0fa17d7422.tar.gz
blackbird-op-linux-f0bf90def3528cebed45ebd81d9b5d0fa17d7422.zip
net/dev: Convert to hotplug state machine
Install the callbacks via the state machine. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: netdev@vger.kernel.org Cc: "David S. Miller" <davem@davemloft.net> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20161103145021.28528-9-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 820bac239738..8e909b2a5f2f 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -7953,18 +7953,13 @@ 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);
@@ -8014,10 +8009,9 @@ 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
@@ -8351,7 +8345,9 @@ 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:
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