6bdeb96382
mlx5e_alloc_unit stores the DMA address and a pointer to either struct page (regular RQ) or struct xdp_buff (XSK RQ). This DMA address is redundant, because when a page or an XSK frame is allocated, the same address is also stored there. Some flows take the address from struct mlx5e_alloc_unit, and some take it from struct page or xdp_buff. This commit removes the address from struct mlx5e_alloc_unit, which makes it twice as small and improves locality (this struct is used in an array), also saving on unnecessary stores to the addr field. Almost all flows know unambiguously whether the DMA address should be taken from page or from xdp_buff. The exception is the allocation flows, where a new branch appeared, which will be optimized out in the next commits. struct mlx5e_alloc_unit used to be called mlx5e_dma_info. Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.