Adding debian version 5.10.209-2.debian/5.10.209-2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 74 insertions, 0 deletions

diff --git a/debian/patches-rt/0236-net-Use-skbufhead-with-raw-lock.patch b/debian/patches-rt/0236-net-Use-skbufhead-with-raw-lock.patch
new file mode 100644
index 000000000..48d95d023
--- /dev/null
+++ b/debian/patches-rt/0236-net-Use-skbufhead-with-raw-lock.patch
@@ -0,0 +1,74 @@
+From d58fbc3fc363cee50de0ac64be0b90fd2666956a Mon Sep 17 00:00:00 2001
+From: Thomas Gleixner <tglx@linutronix.de>
+Date: Tue, 12 Jul 2011 15:38:34 +0200
+Subject: [PATCH 236/323] net: Use skbufhead with raw lock
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz
+
+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
+to the softirq and use the tofree_queue list for it (similar to process_queue).
+
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+---
+ include/linux/skbuff.h | 7 +++++++
+ net/core/dev.c         | 6 +++---
+ 2 files changed, 10 insertions(+), 3 deletions(-)
+
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index a210f1995862..af89bd5e7d56 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -296,6 +296,7 @@ struct sk_buff_head {
+ 
+ 	__u32		qlen;
+ 	spinlock_t	lock;
++	raw_spinlock_t	raw_lock;
+ };
+ 
+ struct sk_buff;
+@@ -1892,6 +1893,12 @@ static inline void skb_queue_head_init(struct sk_buff_head *list)
+ 	__skb_queue_head_init(list);
+ }
+ 
++static inline void skb_queue_head_init_raw(struct sk_buff_head *list)
++{
++	raw_spin_lock_init(&list->raw_lock);
++	__skb_queue_head_init(list);
++}
++
+ static inline void skb_queue_head_init_class(struct sk_buff_head *list,
+ 		struct lock_class_key *class)
+ {
+diff --git a/net/core/dev.c b/net/core/dev.c
+index f973f53c7a1f..895eb42bb5d6 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -221,14 +221,14 @@ static inline struct hlist_head *dev_index_hash(struct net *net, int ifindex)
+ static inline void rps_lock(struct softnet_data *sd)
+ {
+ #ifdef CONFIG_RPS
+-	spin_lock(&sd->input_pkt_queue.lock);
++	raw_spin_lock(&sd->input_pkt_queue.raw_lock);
+ #endif
+ }
+ 
+ static inline void rps_unlock(struct softnet_data *sd)
+ {
+ #ifdef CONFIG_RPS
+-	spin_unlock(&sd->input_pkt_queue.lock);
++	raw_spin_unlock(&sd->input_pkt_queue.raw_lock);
+ #endif
+ }
+ 
+@@ -11296,7 +11296,7 @@ static int __init net_dev_init(void)
+ 
+ 		INIT_WORK(flush, flush_backlog);
+ 
+-		skb_queue_head_init(&sd->input_pkt_queue);
++		skb_queue_head_init_raw(&sd->input_pkt_queue);
+ 		skb_queue_head_init(&sd->process_queue);
+ #ifdef CONFIG_XFRM_OFFLOAD
+ 		skb_queue_head_init(&sd->xfrm_backlog);
+-- 
+2.43.0
+