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63e9bbbcca
Now that the rule trailer/end marker and the rcu head reside in the same structure, we no longer need to save/restore the chain pointer when performing/returning from a jump. We can simply let the trace infra walk the evaluated rule until it hits the end marker and then fetch the chain pointer from there. When the rule is NULL (policy tracing), then chain and basechain pointers were already identical, so just use the basechain. This cuts size of jumpstack in half, from 256 to 128 bytes in 64bit, scripts/stackusage says: nf_tables_core.c:251 nft_do_chain 328 static Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> |
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| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
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| .clang-format | ||
| .cocciconfig | ||
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| README | ||
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.