diff options
Diffstat (limited to '')
| -rw-r--r-- | debian/patches-rt/0197-net-Use-skbufhead-with-raw-lock.patch | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/debian/patches-rt/0197-net-Use-skbufhead-with-raw-lock.patch b/debian/patches-rt/0197-net-Use-skbufhead-with-raw-lock.patch index b107d36b4..5754fc715 100644 --- a/debian/patches-rt/0197-net-Use-skbufhead-with-raw-lock.patch +++ b/debian/patches-rt/0197-net-Use-skbufhead-with-raw-lock.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 12 Jul 2011 15:38:34 +0200 -Subject: [PATCH 197/351] net: Use skbufhead with raw lock -Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=619cb3448d91f55316735c1ca4725b7d8b3d73e3 +Subject: [PATCH 197/353] net: Use skbufhead with raw lock +Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=fa140c5c4b497581079c3170f383502ced597296 Use the rps lock as rawlock so we can keep irq-off regions. It looks low latency. However we can't kfree() from this context therefore we defer this @@ -15,10 +15,10 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 3 files changed, 28 insertions(+), 6 deletions(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h -index 8d48b352ee74..d893dc112afc 100644 +index 4d0f48e74755..d3e4b3f195ff 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h -@@ -2990,6 +2990,7 @@ struct softnet_data { +@@ -2992,6 +2992,7 @@ struct softnet_data { unsigned int dropped; struct sk_buff_head input_pkt_queue; struct napi_struct backlog; @@ -52,7 +52,7 @@ index f97734f34746..3ede4f0eac10 100644 struct lock_class_key *class) { diff --git a/net/core/dev.c b/net/core/dev.c -index add05f74ba38..8ea1c7347987 100644 +index d03162a1828b..1f73badebddc 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -219,14 +219,14 @@ static inline struct hlist_head *dev_index_hash(struct net *net, int ifindex) @@ -72,7 +72,7 @@ index add05f74ba38..8ea1c7347987 100644 #endif } -@@ -5858,7 +5858,9 @@ static int process_backlog(struct napi_struct *napi, int quota) +@@ -5860,7 +5860,9 @@ static int process_backlog(struct napi_struct *napi, int quota) while (again) { struct sk_buff *skb; @@ -82,7 +82,7 @@ index add05f74ba38..8ea1c7347987 100644 rcu_read_lock(); __netif_receive_skb(skb); rcu_read_unlock(); -@@ -5866,9 +5868,9 @@ static int process_backlog(struct napi_struct *napi, int quota) +@@ -5868,9 +5870,9 @@ static int process_backlog(struct napi_struct *napi, int quota) if (++work >= quota) return work; @@ -93,7 +93,7 @@ index add05f74ba38..8ea1c7347987 100644 rps_lock(sd); if (skb_queue_empty(&sd->input_pkt_queue)) { /* -@@ -6341,13 +6343,21 @@ static __latent_entropy void net_rx_action(struct softirq_action *h) +@@ -6343,13 +6345,21 @@ static __latent_entropy void net_rx_action(struct softirq_action *h) unsigned long time_limit = jiffies + usecs_to_jiffies(READ_ONCE(netdev_budget_usecs)); int budget = READ_ONCE(netdev_budget); @@ -115,7 +115,7 @@ index add05f74ba38..8ea1c7347987 100644 for (;;) { struct napi_struct *n; -@@ -9545,10 +9555,13 @@ static int dev_cpu_dead(unsigned int oldcpu) +@@ -9547,10 +9557,13 @@ static int dev_cpu_dead(unsigned int oldcpu) netif_rx_ni(skb); input_queue_head_incr(oldsd); } @@ -130,7 +130,7 @@ index add05f74ba38..8ea1c7347987 100644 return 0; } -@@ -9859,8 +9872,9 @@ static int __init net_dev_init(void) +@@ -9861,8 +9874,9 @@ static int __init net_dev_init(void) INIT_WORK(flush, flush_backlog); |