~/talk

QA about PREEMP_RT

on YouTube 18m
Talkat Linux Plumbers Conference 2023 · 2023-11-13..11-15· [security]

speaker

name:Thomas Gleixner
links:none on file

resources

video:https://youtu.be/O1dzeGJUvvU
slides:none on file

summary

Threaded printk replaces fully synchronous console output with background console threads and a lockless handover state machine that lets a CPU either request cooperative handoff or forcibly take over for emergency prints. About 300–400+ patches plus another ~100 arrive over several windows; three final patch sets are out for review. Default messages become asynchronous with important fields copied first into the message buffer and emergency paths still able to write synchronously. x86_64, RISC‑V and many ARM cases already work; i915 graphics remains a blocker.

AI-written summary · about

chapters (7)

  1. 0:00Introduction and history
  2. 2:34Printk challenges and solutions
  3. 7:00Changes in printk since last year
  4. 12:05Asynchronous console output
  5. 12:49Architecture support after merge
  6. 15:16Preempt RT and printk merge window
  7. 17:27Q&A and closing

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