From 5628f3fe3b16114e8424bbfcf0594caef8958a06 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 28 Sep 2025 08:49:34 +0000 Subject: net: add NUMA awareness to skb_attempt_defer_free() Instead of sharing sd->defer_list & sd->defer_count with many cpus, add one pair for each NUMA node. Signed-off-by: Eric Dumazet Reviewed-by: Jason Xing Reviewed-by: Kuniyuki Iwashima Link: https://patch.msgid.link/20250928084934.3266948-4-edumazet@google.com Signed-off-by: Paolo Abeni --- include/net/hotdata.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/net') diff --git a/include/net/hotdata.h b/include/net/hotdata.h index fda94b2647ff..4acec191c54a 100644 --- a/include/net/hotdata.h +++ b/include/net/hotdata.h @@ -2,10 +2,16 @@ #ifndef _NET_HOTDATA_H #define _NET_HOTDATA_H +#include #include #include #include +struct skb_defer_node { + struct llist_head defer_list; + atomic_long_t defer_count; +} ____cacheline_aligned_in_smp; + /* Read mostly data used in network fast paths. */ struct net_hotdata { #if IS_ENABLED(CONFIG_INET) @@ -30,6 +36,7 @@ struct net_hotdata { struct rps_sock_flow_table __rcu *rps_sock_flow_table; u32 rps_cpu_mask; #endif + struct skb_defer_node __percpu *skb_defer_nodes; int gro_normal_batch; int netdev_budget; int netdev_budget_usecs; -- cgit v1.2.3