diff options
| author | Alexander Lobakin <alobakin@pm.me> | 2021-02-13 17:11:39 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-02-14 01:32:03 +0300 |
| commit | df1ae022af2cd79f7ad3c65d95369d4649feea52 (patch) | |
| tree | 5fcb514bc70522cb3e86a6fb9f93dd79639ab4b5 /net | |
| parent | 483126b3b2c649c0ef95f67ac75d3c99390d6cc8 (diff) | |
| download | linux-df1ae022af2cd79f7ad3c65d95369d4649feea52.tar.xz | |
skbuff: simplify __alloc_skb() a bit
Use unlikely() annotations for skbuff_head and data similarly to the
two other allocation functions and remove totally redundant goto.
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/skbuff.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index c7d184e11547..88566de26cd1 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -339,8 +339,8 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask, /* Get the HEAD */ skb = kmem_cache_alloc_node(cache, gfp_mask & ~__GFP_DMA, node); - if (!skb) - goto out; + if (unlikely(!skb)) + return NULL; prefetchw(skb); /* We do our best to align skb_shared_info on a separate cache @@ -351,7 +351,7 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask, size = SKB_DATA_ALIGN(size); size += SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); data = kmalloc_reserve(size, gfp_mask, node, &pfmemalloc); - if (!data) + if (unlikely(!data)) goto nodata; /* kmalloc(size) might give us more room than requested. * Put skb_shared_info exactly at the end of allocated zone, @@ -395,12 +395,11 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask, skb_set_kcov_handle(skb, kcov_common_handle()); -out: return skb; + nodata: kmem_cache_free(cache, skb); - skb = NULL; - goto out; + return NULL; } EXPORT_SYMBOL(__alloc_skb); |