mainlining shenanigans
3dbb5b5040
Song Liu says: ==================== run_time_ns is a useful stats for BPF programs. However, it is gated by sysctl kernel.bpf_stats_enabled. When multiple user space tools are toggling kernl.bpf_stats_enabled at the same time, they may confuse each other. Solve this problem with a new BPF command BPF_ENABLE_STATS. Changes v8 => v9: 1. Clean up in selftest (Andrii). 2. Not using static variable in test program (Andrii). Changes v7 => v8: 1. Change name BPF_STATS_RUNTIME_CNT => BPF_STATS_RUN_TIME (Alexei). 2. Add CHECK_ATTR to bpf_enable_stats() (Alexei). 3. Rebase (Andrii). 4. Simplfy the selftest (Alexei). Changes v6 => v7: 1. Add test to verify run_cnt matches count measured by the program. Changes v5 => v6: 1. Simplify test program (Yonghong). 2. Rebase (with some conflicts). Changes v4 => v5: 1. Use memset to zero bpf_attr in bpf_enable_stats() (Andrii). Changes v3 => v4: 1. Add libbpf support and selftest; 2. Avoid cleaning trailing space. Changes v2 => v3: 1. Rename the command to BPF_ENABLE_STATS, and make it extendible. 2. fix commit log; 3. remove unnecessary headers. ==================== Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| 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 | ||
| Kconfig | ||
| MAINTAINERS | ||
| 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.