From 9bd6ff503077e03fdf3b1a0a55b1427759eb23ac Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 20 Jan 2026 16:49:01 +0000 Subject: [PATCH] net: always inline __skb_incr_checksum_unnecessary() clang does not inline this helper in GRO fast path. We can save space and cpu cycles. $ scripts/bloat-o-meter -t vmlinux.0 vmlinux.1 add/remove: 0/2 grow/shrink: 2/0 up/down: 156/-218 (-62) Function old new delta tcp6_gro_complete 227 311 +84 tcp4_gro_complete 325 397 +72 __pfx___skb_incr_checksum_unnecessary 32 - -32 __skb_incr_checksum_unnecessary 186 - -186 Total: Before=22592724, After=22592662, chg -0.00% Signed-off-by: Eric Dumazet Link: https://patch.msgid.link/20260120164903.1912995-2-edumazet@google.com Signed-off-by: Jakub Kicinski --- include/linux/skbuff.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 86737076101d4..e6bfe5d0c5252 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -4763,7 +4763,7 @@ static inline void __skb_decr_checksum_unnecessary(struct sk_buff *skb) } } -static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb) +static __always_inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb) { if (skb->ip_summed == CHECKSUM_UNNECESSARY) { if (skb->csum_level < SKB_MAX_CSUM_LEVEL) -- 2.47.3