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0dbf66fa7e
In the following patches we will enable LBR capture on AMD CPUs at arbitrary point in time, which means that LBR recording won't be frozen by hardware automatically as part of hardware overflow event. So we need to take care to minimize amount of branches and function calls/returns on the path to freezing LBR, minimizing LBR snapshot altering as much as possible. amd_pmu_core_disable_all() is one of the functions on this path, and is already marked as __always_inline. But it calls amd_pmu_set_global_ctl() which is marked as just inline. So to guarantee no function call will be generated thoughout mark amd_pmu_set_global_ctl() as __always_inline as well. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Sandipan Das <sandipan.das@amd.com> Link: https://lore.kernel.org/r/20240402022118.1046049-2-andrii@kernel.org |
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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.