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- Replace NAPI_SKB_CACHE_HALF with NAPI_SKB_CACHE_FREE - Only free 32 skbs in napi_skb_cache_put() Since the first patch adjusting NAPI_SKB_CACHE_SIZE to 128, the number of packets to be freed in the softirq was increased from 32 to 64. Considering a subsequent net_rx_action() calling napi_poll() a few times can easily consume the 64 available slots and we can afford keeping a higher value of sk_buffs in per-cpu storage, decrease NAPI_SKB_CACHE_FREE to 32 like before. So now the logic is 1) keeping 96 skbs, 2) freeing 32 skbs at one time. Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jason Xing <kernelxing@tencent.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Link: https://patch.msgid.link/20251118070646.61344-4-kerneljasonxing@gmail.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 reStructuredText 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.