kernel: delete Linux 5.4 config and patches

[openwrt/openwrt.git] / target / linux / generic / backport-5.4 / 080-wireguard-0099-wireguard-send-receive-cond_resched-when-processing-.patch

diff --git a/target/linux/generic/backport-5.4/080-wireguard-0099-wireguard-send-receive-cond_resched-when-processing-.patch b/target/linux/generic/backport-5.4/080-wireguard-0099-wireguard-send-receive-cond_resched-when-processing-.patch
deleted file mode 100644 (file)
index 499b36b..0000000
--- a/target/linux/generic/backport-5.4/080-wireguard-0099-wireguard-send-receive-cond_resched-when-processing-.patch
+++ /dev/null
@@ -1,58 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: "Jason A. Donenfeld" <Jason@zx2c4.com>
-Date: Wed, 6 May 2020 15:33:04 -0600
-Subject: [PATCH] wireguard: send/receive: cond_resched() when processing
- worker ringbuffers
-
-commit 4005f5c3c9d006157ba716594e0d70c88a235c5e upstream.
-
-Users with pathological hardware reported CPU stalls on CONFIG_
-PREEMPT_VOLUNTARY=y, because the ringbuffers would stay full, meaning
-these workers would never terminate. That turned out not to be okay on
-systems without forced preemption, which Sultan observed. This commit
-adds a cond_resched() to the bottom of each loop iteration, so that
-these workers don't hog the core. Note that we don't need this on the
-napi poll worker, since that terminates after its budget is expended.
-
-Suggested-by: Sultan Alsawaf <sultan@kerneltoast.com>
-Reported-by: Wang Jian <larkwang@gmail.com>
-Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
----
- drivers/net/wireguard/receive.c | 2 ++
- drivers/net/wireguard/send.c    | 4 ++++
- 2 files changed, 6 insertions(+)
-
---- a/drivers/net/wireguard/receive.c
-+++ b/drivers/net/wireguard/receive.c
-@@ -516,6 +516,8 @@ void wg_packet_decrypt_worker(struct wor
-                               &PACKET_CB(skb)->keypair->receiving)) ?
-                               PACKET_STATE_CRYPTED : PACKET_STATE_DEAD;
-               wg_queue_enqueue_per_peer_napi(skb, state);
-+              if (need_resched())
-+                      cond_resched();
-       }
- }
- 
---- a/drivers/net/wireguard/send.c
-+++ b/drivers/net/wireguard/send.c
-@@ -281,6 +281,8 @@ void wg_packet_tx_worker(struct work_str
- 
-               wg_noise_keypair_put(keypair, false);
-               wg_peer_put(peer);
-+              if (need_resched())
-+                      cond_resched();
-       }
- }
- 
-@@ -304,6 +306,8 @@ void wg_packet_encrypt_worker(struct wor
-               }
-               wg_queue_enqueue_per_peer(&PACKET_PEER(first)->tx_queue, first,
-                                         state);
-+              if (need_resched())
-+                      cond_resched();
-       }
- }
-