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Song Liu
61ce0ea759
bpf_cookie and find_vma are flaky in nested VMs, which is used by some CI systems. It turns out these failures are caused by unreliable perf event in nested VM. Fix these by: 1. Use PERF_COUNT_SW_CPU_CLOCK in find_vma; 2. Increase sample_freq in bpf_cookie. Signed-off-by: Song Liu <song@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240604070700.3032142-1-song@kernel.org
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.