Hi Ulf, On Wed, Mar 14, 2018 at 05:58:10PM +0100, Ulf Hansson wrote: > For ARM, the PSCI firmware interface may be managing the power to the CPUs. > Depending on the SoC, CPUs may also be arranged in hierarchical manner, which > could add another level of complexity from a CPU idle management point of view. > > PSCI v1.0+ adds support for the so called OS initiated CPU suspend mode, which > enables a more fine grained method, allowing Linux to get more control, in > regards to being energy efficient. This is typically useful for these kind of > complex battery driven platforms. > The series is based on v4.16-rc5, but applies also as of today to Rafael's > linux-pm.git next branch. The code has been tested on a QCOM 410c dragonboard > and I except that test coverage should be increased by some more boards > shortly (for ARM64 with PSCI OSI support - only a few DT changes are needed). Do we have any numbers to show how this affects energy efficiency? Are there any other platforms with OSI support? Thanks, Mark. -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
