LKML News v6.2-rc8

[LSF/MM/BPF TOPIC] sframe: An orc like stack unwinder for the kernel to get a user space stacktrace (Steven Rostedt)

https://lkml.kernel.org/r/20230206103828.6efcb28f@rorschach.local.home

Steven Rostedt proposes yet another LSF/MM/BPF topic for using sframe section, which is introduced by binutils, for more efficient user space stack tracing.

[PATCH v4 00/14] Introduce Copy-On-Write to Page Table (Chih-En Lin)

https://lkml.kernel.org/r/20230207035139.272707-1-shiyn.lin@gmail.com

Fourth version of the patchset making copy-on-write be used for page table, while it is currently only used for the mapped memory.

categories: []TCH v2 00/20] CXL RAM and the ‘Soft Reserved’ => ‘System RAM’ default (Dan Williams)

https://lkml.kernel.org/r/167601992097.1924368.18291887895351917895.stgit@dwillia2-xfh.jf.intel.com

This patchset reworks ‘Soft Reserved’ policy to designate CXL attached DRAM like performance differentiated memory as ‘System RAM’ by default.

[PATCH] psi: reduce min window size to 50ms (Sudarshan Rajagopalan)

https://lkml.kernel.org/r/cover.1676067791.git.quic_sudaraja@quicinc.com

The minimum window size of PSI is 500ms. This patch asks the rationale behind the decision and suggest reducing it to 50ms.

Linux 6.2-rc8 (Linus Torvalds)

https://lkml.kernel.org/r/CAHk-=wj1=T1KzpPWbhqfFWOEp5Wf_kj3JjTHSHmEngf0-Vv7aA@mail.gmail.com

The eighth candidate for Linux 6.2 release has released. It was fairly calm. This extended stabilization week was not due to any problem, but just to make the time for early holiday season. It turned out it might not really needed, but there was also no reason to change already announced plan. So we are having one more week for stabilization of Linux 6.2.

Below is the diffstat of the releases in the last two years.

Note that the y-axis is in logarithm. I draw it using https://github.com/sjp38/relstat and https://github.com/sjp38/lazybox using below command:

$ relstat.py --since 2021-02-13 | ~/lazybox/gnuplot/plot.py \
    --data_fmt table --type labeled-lines --xtics_rotate -90 \
    --font "Times New Roman, 5pt" --ylog --pointsize 0.3

And, below is the diffstat of the -rc6 releases in the last two years.