I think this is the first time I ever used the quadratic equation for a real purpose since college! 🤔

https://lore.kernel.org/lkml/20250204172045.3a5d8d01@gandalf.local.home/

Not every day you can say you were complemented by Linus Torvalds saying you had an “interesting idea”. Always look for those silver linings!

https://lore.kernel.org/linux-trace-kernel/20241217131717.0fa5a21b@gandalf.local.home/T/#med0de149d3f7d1d4648406c277272ff6ea9eab04

Fixing up a messed up Debian upgrade where I needed to reinstall, I had to hit “Select this only if you know what you are doing”. I don’t know what I’m doing, but I had to hit it to do what I needed to get done 😛

Another useful email to the Linux Plumbers mailing list!

Kernel Recipes (which is always held in Paris) is thinking of changing their logo.

Last night at the real-time celebration, Thomas Gleixner handed Linus Torvalds his official pull request of the real-time patch on paper "wrapped in gold with a ribbon around it''

THIS IS IT!!!

The last hurdle for PREEMPT_RT being merged into mainline has just removed by this pull request. Leaving the door open for PREEMPT_RT to be added to 6.12!

With my new persistent memory mapped ring buffer, were I can retrieve the tracing buffer from the previous boot that crashed, I was able to debug a recent issue. To do this, I added code to allow trace_printk() to be directed to the persistent ring buffer, along with enabling the printk console trace event (writes all printk()s to the tracing ring buffer), I was able to get the perfect idea of what was happening that lead up to the crash!

https://lore.kernel.org/lkml/20240823013902.135036960@goodmis.org/

ANNOUNCE Just released:

trace-cmd v3.3 and libtracecmd 1.5.2

libtracefs v1.8.1

libtraceevent v1.8.3

A tribute to Daniel Bristot de Oliveira from Linux Plumbers. https://lpc.events/blog/current/index.php/2024/07/06/in-memory-of-daniel-bristot-de-oliveira/

Daniel Bristot de Oliveira passed away on Monday, June 24th at the age of 37. Another sad loss for the Linux kernel developer community, Daniel will be sorely missed.

In memory of Daniel: https://t.co/kQCQyTCo1a

Mourning Daniel Bristot de Oliveira

https://lwn.net/Articles/979912/ #LWN

https://lwn.net/Articles/979912/

"And you get a scheduler, and you get a scheduler, and you get a scheduler"

[ stolen from a colleague ]

Linus Torvalds: And for everybody else as a "It's happening" heads-up.

Linux Plumbers 2024 has accepted 9 Microconferences! But we had 26 submissions for 18 slots! What to do with that? Read about it here: https://lpc.events/blog/current/index.php/2024/05/03/awesome-amount-of-microconference-submissions/

Just posted a proof of concept that allows you to read a trace after a reboot, including a kernel crash!
https://lore.kernel.org/lkml/20240306015910.766510873@goodmis.org/

Doing some testing against a change; I ran two traces. Recording the trace before applying the patch as trace-b.dat and then calling the trace file after applying the patch as trace-a.dat. Then doing an ls trace*.dat I have:

trace-a.dat
trace-b.dat

And it looks like trace-a.dat should come before trace-b.dat. I’m so confused! 😛

Looks like a lot of people are still without power in Portland. Linus gets a surprise vacation during the merge window 🫤