Linux Kernel: Weekly Recap - Timer Infrastructure Modernization
This week brought a comprehensive overhaul of Linux's timer and interrupt subsystems, with six major merge commits from Thomas Gleixner modernizing everything from virtual system calls to precision timestamping. The changes focus on performance improvements, architectural cleanup, and better hardware support across multiple domains.
Duration: PT2M50S
Episode overview
This episode is a short developer briefing from Linux Kernel.
It explains recent repository work in plain language.
- Show: Linux Kernel
- Published: 2026-06-15T09:38:33Z
- Audio duration: PT2M50S
Transcript excerpt
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Welcome to Linux Kernel Weekly Recap for June 8th through 15th, 2026.
Zero pull request activity items, 30 additional commits this week.
This week marked a significant consolidation phase for Linux's core timing infrastructure, with Linus Torvalds merging six comprehensive timer and interrupt modernization efforts from Thomas Gleixner's tip tree.
The most impactful changes center on timer subsystem performance and reliability. The core timer updates include hardened user-space controllable timer interfaces to prevent unprivileged denial-of-service attacks by blocking timers set in the past. The timer migration code now features per-capacity hierarchies to…
Precision timestamping received major architectural improvements through expanded snapshot mechanisms. The changes convert hard-wired time snapshot functions to accept clock IDs, allowing callers to select specific clocks alongside monotonic raw time. New hardware counter capture capabilities provide better control…
The NOHZ idle time accounting system saw significant cleanup to address long-standing time-of-check-time-of-use issues and unify dual accounting mechanisms that could cause global idle time to appear to move backward.…
Nearby episodes from Linux Kernel
- Low-Level Architecture Overhaul
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- Memory Safety and Resource Management Fixes
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- Security Fix and Late-Stage Bug Resolution
- Critical Memory Safety and Validation Fixes
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