mirror of https://gitee.com/openkylin/linux.git
9ed3e5f447
This radix tree datastructure is intended to replace the 'hash' structure used today for parsing ioctl methods during system calls. This first commit introduces the structure and builds it from the existing .rodata descriptions. The so-called hash arrangement is actually a 5 level open coded radix tree. This new version uses a 3 level radix tree built using the radix tree library. Overall this is much less code and much easier to build as the radix tree API allows for dynamic modification during the building. There is a small memory penalty to pay for this, but since the radix tree is allocated on a per device basis, a few kb of RAM seems immaterial considering the gained simplicity. The radix tree is similar to the existing tree, but also has a 'attr_bkey' concept, which is a small value'd index for each method attribute. This is used to simplify and improve performance of everything in the next patches. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com> |
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| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.