Power Management Updates Touch Intel P-State & More For Linux 4.13
Rafael Wysocki has submitted the ACPI and power management updates for the Linux 4.13 merge window.
Highlights of the power management changes for this next kernel revision include:
- A rework of the suspend-to-idle driver in order to properly support the power button wake-up on newer Dell laptops.
- x86 systems will no longer try to export their current CPU frequency to /proc/cpuinfo. There's also a way to rework how the CPU frequency is exported via sysfs too, using the registers for computing the current frequency rather than relying upon the CPUFreq driver.
- New hardware suppport like the hi3660 and rk3228 support. AMD 0x17 CPUs (Zen) are also now supported by the cpupower tool.
- Functional improvements to the Intel P-State driver, including reducing its overhead in the hardware-managed P-State mode as well as when the "performance" governor is used.
- Support for using multiple cpuidle drivers concurrently on ARM.
- AMD has support for fixed function hardware MWAIT (FFH MWAIT) in ACPI C1.
- Various other clean-ups and improvements.
More details here. There's also the ACPI updates with its usual churn.
Highlights of the power management changes for this next kernel revision include:
- A rework of the suspend-to-idle driver in order to properly support the power button wake-up on newer Dell laptops.
- x86 systems will no longer try to export their current CPU frequency to /proc/cpuinfo. There's also a way to rework how the CPU frequency is exported via sysfs too, using the registers for computing the current frequency rather than relying upon the CPUFreq driver.
- New hardware suppport like the hi3660 and rk3228 support. AMD 0x17 CPUs (Zen) are also now supported by the cpupower tool.
- Functional improvements to the Intel P-State driver, including reducing its overhead in the hardware-managed P-State mode as well as when the "performance" governor is used.
- Support for using multiple cpuidle drivers concurrently on ARM.
- AMD has support for fixed function hardware MWAIT (FFH MWAIT) in ACPI C1.
- Various other clean-ups and improvements.
More details here. There's also the ACPI updates with its usual churn.
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