LKML News v5.7-rc7

[PATCH v5] mm: Proactive compaction (Nitin Gupta)

https://lkml.kernel.org/r/20200518181446.25759-1-nigupta@nvidia.com

The 5th version of the proactive compaction. This patchset make the compaction more proactive to make THP allocation easily success.

[PATCH -V2] swap: Reduce lock contention on swap cache from swap slots allocation (Huang Ying)

https://lkml.kernel.org/r/20200520031502.175659-1-ying.huang@intel.com

After swap device is fragmented, there’s no free swap cluster. Therefore, each swap logic of each CPU will linearly scan each swap cluster to find a free slot. As multiple CPUs can search the slot in same cluster, the swap cache lock contention could increase.

This patchset reduces the lock contention by using percpu pointer for next scanning cluster. The pointer is set to random cluster. This change is applied to SSD swap device only.

[Ksummit-discuss] [TECH TOPIC] seccomp feature development (Kees Cook)

https://lkml.kernel.org/r/202005200917.71E6A5B20@keescook

The first kernel summit technical topic. Kees Cook want to talk about seccomp.

Linux 5.7-rc7

https://lkml.kernel.org/r/CAHk-=whan1CiRtcgBt-5SkW-ga_GeLH5+AO26RmK7vOA5yw9ng@mail.gmail.com

The rc6 was unexpectedly big, but rc7 is quite normal. Torvalds says the release schedule will not dealyed, unless something happens.

Also, Torvalds says he upgraded his main machine for the first time in about 15 years, from Intel machine to the AMD Threadripper 3970x. His build is not 3 times faster!