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authorJakub Kicinski2023-02-07 10:57:57 -0800
committerJakub Kicinski2023-02-07 11:00:03 -0800
commit383d9f87a06dd923c4fd0fdcb65b58258851f545 (patch)
tree63eee2d53a03648d9d0aeb3a2535315a0dc6bf25 /scripts/mksysmap
parent61d731e6538dc44abf2dca6e77098ec6e85f7cc2 (diff)
parentbf9f1baa279f0758dc2297080360c5a616843927 (diff)
Merge branch 'net-core-use-a-dedicated-kmem_cache-for-skb-head-allocs'
Eric Dumazet says: ==================== net: core: use a dedicated kmem_cache for skb head allocs Our profile data show that using kmalloc(non_const_size)/kfree(ptr) has a certain cost, because kfree(ptr) has to pull a 'struct page' in cpu caches. Using a dedicated kmem_cache for TCP skb->head allocations makes a difference, both in cpu cycles and memory savings. This kmem_cache could also be used for GRO skb allocations, this is left as a future exercise. ==================== Link: https://lore.kernel.org/r/20230206173103.2617121-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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