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Use napi_build_skb() which uses NAPI percpu caches to obtain skbuff_head instead of inplace allocation. napi_build_skb() calls napi_skb_cache_get(), which returns a cached skb, or allocates a bulk of NAPI_SKB_CACHE_BULK (16) if cache is empty. Performance test: TCP single stream, single ring, single core, default MTU (1500B). Before: 26.5 Gbits/sec After: 30.1 Gbits/sec (+13.6%) Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Gal Pressman <gal@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
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.