From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Mon, 22 Feb 2021 17:25:46 +0100
Subject: wireguard: peer: put frequently used members above cache lines
Patch-mainline: v5.12-rc1
Git-commit: 5a0598695634a6bb4126818902dd9140cd9df8b6
References: git-fixes

The is_dead boolean is checked for every single packet, while the
internal_id member is used basically only for pr_debug messages. So it
makes sense to hoist up is_dead into some space formerly unused by a
struct hole, while demoting internal_api to below the lowest struct
cache line.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/net/wireguard/peer.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/wireguard/peer.h
+++ b/drivers/net/wireguard/peer.h
@@ -39,6 +39,7 @@ struct wg_peer {
 	struct crypt_queue tx_queue, rx_queue;
 	struct sk_buff_head staged_packet_queue;
 	int serial_work_cpu;
+	bool is_dead;
 	struct noise_keypairs keypairs;
 	struct endpoint endpoint;
 	struct dst_cache endpoint_cache;
@@ -61,9 +62,8 @@ struct wg_peer {
 	struct rcu_head rcu;
 	struct list_head peer_list;
 	struct list_head allowedips_list;
-	u64 internal_id;
 	struct napi_struct napi;
-	bool is_dead;
+	u64 internal_id;
 };
 
 struct wg_peer *wg_peer_create(struct wg_device *wg,