From 14d898f3c1b3bf9c4375ee3255ec9e9b89a35578 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@redhat.com>
Date: Tue, 8 Nov 2022 15:05:59 +0100
Subject: [PATCH] dev: Move received_rps counter next to RPS members in softnet
data
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit
Move the received_rps counter value next to the other RPS-related members
in softnet_data. This closes two four-byte holes in the structure, making
room for another pointer in the first two cache lines without bumping the
xmit struct to its own line.
Acked-by: Song Liu <song@kernel.org>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20221108140601.149971-2-toke@redhat.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---
include/linux/netdevice.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 02a2318da7c70..ddc59ef985008 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3128,7 +3128,6 @@ struct softnet_data {
/* stats */
unsigned int processed;
unsigned int time_squeeze;
- unsigned int received_rps;
#ifdef CONFIG_RPS
struct softnet_data *rps_ipi_list;
#endif
@@ -3161,6 +3160,7 @@ struct softnet_data {
unsigned int cpu;
unsigned int input_queue_tail;
#endif
+ unsigned int received_rps;
unsigned int dropped;
struct sk_buff_head input_pkt_queue;
struct napi_struct backlog;
--
2.30.2