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Message-Id: <20221108140601.149971-2-toke@redhat.com>
Date: Tue, 8 Nov 2022 15:05:59 +0100
From: Toke Høiland-Jørgensen <toke@...hat.com>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: Toke Høiland-Jørgensen <toke@...hat.com>,
Song Liu <song@...nel.org>,
Stanislav Fomichev <sdf@...gle.com>, netdev@...r.kernel.org,
bpf@...r.kernel.org
Subject: [PATCH bpf-next v3 1/3] dev: Move received_rps counter next to RPS members in softnet data
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@...nel.org>
Reviewed-by: Stanislav Fomichev <sdf@...gle.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@...hat.com>
---
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 4b5052db978f..31c53d409743 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3114,7 +3114,6 @@ 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
@@ -3147,6 +3146,7 @@ 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;
--
2.38.1
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