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76fb981ad6
Update cpuidle tool to display the residency value of cpuidle states. This addition provides a clearer and more detailed view of idle state information when using cpuidle-info. -------------------------------- Before Patch: -------------------------------- $ cpupower idle-info CPUidle driver: intel_idle CPUidle governor: menu analyzing CPU 28: Number of idle states: 3 Available idle states: POLL C1 C1E POLL: Flags/Description: CPUIDLE CORE POLL IDLE Latency: 0 Usage: 7448 Duration: 207170 C1: Flags/Description: MWAIT 0x00 Latency: 2 Usage: 7023 Duration: 3736853 C1E: Flags/Description: MWAIT 0x01 Latency: 10 Usage: 18468 Duration: 11396212 -------------------------------- After Patch: -------------------------------- $ cpupower idle-info CPUidle driver: intel_idle CPUidle governor: menu analyzing CPU 12: Number of idle states: 3 Available idle states: POLL C1 C1E POLL: Flags/Description: CPUIDLE CORE POLL IDLE Latency: 0 Residency: 0 Usage: 1950 Duration: 38458 C1: Flags/Description: MWAIT 0x00 Latency: 2 Residency: 2 Usage: 10688 Duration: 7133020 C1E: Flags/Description: MWAIT 0x01 Latency: 10 Residency: 20 Usage: 22356 Duration: 15687259 -------------------------------- Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.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.