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IO time is considered busy by default for modern Intel processors. The current check covers recent Family 6 models but excludes the brand new Families 18 and 19. According to Arjan van de Ven, the model check was mainly due to a lack of testing on systems before INTEL_CORE2_MEROM. He suggests considering all Intel processors as having an efficient idle. Extend the IO busy classification to all Intel processors starting with Family 6, including Family 15 (Pentium 4s) and upcoming Families 18/19. Use an x86 VFM check and move the function to the header file to avoid using arch-specific #ifdefs in the C file. Signed-off-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://patch.msgid.link/20250908230655.2562440-1-sohil.mehta@intel.com [ rjw: Added empty line after #include ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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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.