aeb01e6d71
C-state pre-wake setting[1] is an optimization for some Intel CPUs to be woken up from deep C-states in order to reduce latency. According to the spec, the BIT30 is the C-state Pre-wake Disable. Expose this setting accordingly. Sample output from turbostat: ... cpu51: MSR_IA32_POWER_CTL: 0x1a00a40059 (C1E auto-promotion: DISabled) C-state Pre-wake: ENabled cpu51: MSR_TURBO_RATIO_LIMIT: 0x2021212121212224 ... [1] https://intel.github.io/wult/#c-state-pre-wake Signed-off-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
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.