netdev - [PATCH net-next v2 2/2] skbuff: Add likely to skb pointer in build

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Message-ID: <20230308131720.2103611-3-gal@nvidia.com>
Date:   Wed, 8 Mar 2023 15:17:20 +0200
From:   Gal Pressman <gal@...dia.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, Gal Pressman <gal@...dia.com>,
        Tariq Toukan <tariqt@...dia.com>,
        Larysa Zaremba <larysa.zaremba@...el.com>
Subject: [PATCH net-next v2 2/2] skbuff: Add likely to skb pointer in build_skb()

Similarly to napi_build_skb(), it is likely the skb allocation in
build_skb() succeeded. frag_size != 0 is also likely, as stated in
__build_skb_around().

Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Gal Pressman <gal@...dia.com>
Reviewed-by: Larysa Zaremba <larysa.zaremba@...el.com>
---
 net/core/skbuff.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 5c1a65cc2f39..34df1aa0584b 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -420,7 +420,7 @@ struct sk_buff *build_skb(void *data, unsigned int frag_size)
 {
 	struct sk_buff *skb = __build_skb(data, frag_size);
 
-	if (skb && frag_size) {
+	if (likely(skb && frag_size)) {
 		skb->head_frag = 1;
 		skb_propagate_pfmemalloc(virt_to_head_page(data), skb);
 	}
-- 
2.39.1