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A mirror of the official Linux kernel repository just in case
a7d24d9582
Song Liu says: ==================== This set enables task local storage for non-BPF_LSM programs. It is common for tracing BPF program to access per-task data. Currently, these data are stored in hash tables with pid as the key. In bcc/libbpftools [1], 9 out of 23 tools use such hash tables. However, hash table is not ideal for many use case. Task local storage provides better usability and performance for BPF programs. Please refer to 6/6 for some performance comparison of task local storage vs. hash table. Changes v5 => v6: 1. Add inc/dec bpf_task_storage_busy in bpf_local_storage_map_free(). Changes v4 => v5: 1. Fix build w/o CONFIG_NET. (kernel test robot) 2. Remove unnecessary check for !task_storage_ptr(). (Martin) 3. Small changes in commit logs. Changes v3 => v4: 1. Prevent deadlock from recursive calls of bpf_task_storage_[get|delete]. (2/6 checks potential deadlock and fails over, 4/6 adds a selftest). Changes v2 => v3: 1. Make the selftest more robust. (Andrii) 2. Small changes with runqslower. (Andrii) 3. Shortern CC list to make it easy for vger. Changes v1 => v2: 1. Do not allocate task local storage when the task is being freed. 2. Revise the selftest and added a new test for a task being freed. 3. Minor changes in runqslower. ==================== Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
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| Makefile | ||
| 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.