diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/080-wireguard-0120-wireguard-peer-put-frequently-used-members-above-cac.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/080-wireguard-0120-wireguard-peer-put-frequently-used-members-above-cac.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0120-wireguard-peer-put-frequently-used-members-above-cac.patch b/target/linux/generic/backport-5.4/080-wireguard-0120-wireguard-peer-put-frequently-used-members-above-cac.patch new file mode 100644 index 0000000000..69e76b96e3 --- /dev/null +++ b/target/linux/generic/backport-5.4/080-wireguard-0120-wireguard-peer-put-frequently-used-members-above-cac.patch @@ -0,0 +1,42 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: "Jason A. Donenfeld" <Jason@zx2c4.com> +Date: Mon, 22 Feb 2021 17:25:46 +0100 +Subject: [PATCH] wireguard: peer: put frequently used members above cache + lines + +commit 5a0598695634a6bb4126818902dd9140cd9df8b6 upstream. + +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> +Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> +--- + 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, |