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Linux kernel stable tree
6a5c63d43c
After switching from kmalloc() to the bpf memory allocator, there will be no blocking operation during the update of LPM trie. Therefore, change trie->lock from spinlock_t to raw_spinlock_t to make LPM trie usable in atomic context, even on RT kernels. The max value of prefixlen is 2048. Therefore, update or deletion operations will find the target after at most 2048 comparisons. Constructing a test case which updates an element after 2048 comparisons under a 8 CPU VM, and the average time and the maximal time for such update operation is about 210us and 900us. Signed-off-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/r/20241206110622.1161752-8-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
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| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
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| COPYING | ||
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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 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.