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pass it as argument instead. This reduces size of traceinfo to 16 bytes. Total stack usage: nf_tables_core.c:252 nft_do_chain 304 static While its possible to also pass basechain as argument, doing so increases nft_do_chaininfo function size. Unlike pktinfo/verdict/rule the basechain info isn't used in the expression evaluation path. gcc places it on the stack, which results in extra push/pop when it gets passed to the trace helpers as argument rather than as part of the traceinfo structure. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.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.