Commit 0f3cd437 authored by Amit Cohen's avatar Amit Cohen Committed by Jakub Kicinski
Browse files

mlxsw: pci: Optimize data buffer access 



Before accessing data buffer, call net_prefetch() to load it into the
cache. This change improves driver performance, CPU can handle about
7.1% more packets per second.

Signed-off-by: default avatarAmit Cohen <amcohen@nvidia.com>
Reviewed-by: default avatarIdo Schimmel <idosch@nvidia.com>
Signed-off-by: default avatarPetr Machata <petrm@nvidia.com>
Reviewed-by: default avatarJiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/1fa07c510890866a6f201163ab7e78890ba28b3b.1718709196.git.petrm@nvidia.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent b5b60bb4

drivers/net/ethernet/mellanox/mlxsw/pci.c

+1 −0
Original line number Diff line number Diff line
@@ -396,6 +396,7 @@ static struct sk_buff *mlxsw_pci_rdq_build_skb(struct page *page, 
	unsigned int allocated_size;

	struct sk_buff *skb;



	net_prefetch(data);

	allocated_size = page_size(page);

	skb = napi_build_skb(data, allocated_size);

	if (unlikely(!skb))