Power-Saving PCI Express L1 PM Substate Support Coming To Linux 4.11

[polarathene]

I've seen a lot of interesting features lately in kernel releases that need a config flag to use. How often do these remain that way instead of later being switched on as default? Is there a list of these maintained somewhere or do you need to browser through previous kernel release news to learn about each one? I don't suppose there is a nice frontend out there for enabling such features and having a kernel build automated for a user?

[phoronix]

Phoronix: Power-Saving PCI Express L1 PM Substate Support Coming To Linux 4.11

While hearing "ASPM" may still scare some of you from the Linux kernel power management woes of a few years ago, ASPM PCI-E L1 PM substate support is coming to Linux 4.11 to hopefully help with power savings for idle PCI Express devices...

http://www.phoronix.com/scan.php?page=news_item&px=ASPM-PCIE-L1-PM-Sub