[$] DebugFS on Rust


DebugFS
is the kernel’s anything-goes, no-rules interface: whenever a kernel
developer needs quick access to internal details of the kernel to debug a
problem, or to implement an experimental control interface,
they can expose them via DebugFS. This is possible because DebugFS is not subject
to the normal rules for user-space-interface stability, nor to the rules about
exposing sensitive kernel information. Supporting DebugFS in Rust drivers is an
important step toward being able to debug real drivers on real hardware. Matthew
Maurer spoke at

Kangrejos 2025
about his recently merged

DebugFS bindings for Rust
.

LLVM Lands Some Long Overdue Tuning Optimizations For AMD Zen 4

Merged today to the LLVM/Clang compiler codebase are some long overdue adjustments to the AMD Zen 4 “znver4” CPU model for more accurately assessing various latency timings and micro-ops. These values were initially copied over from the Zen 3 (znver3) target but never adjusted properly for Zen 4 until now when an independent contributor took to sorting it out…

10 MySQL Interview Questions Every DBA Must Know

In our previous articles, we’ve covered MySQL interview questions for beginners and intermediate users, and the response has been overwhelming. Today, we’re taking a different approach – focusing specifically on MySQL Database Interview Questions tailored for Linux users.

Now, some of you might be wondering why we’re separating Linux users from the rest. Well, the reason is simple. In most production environments, MySQL runs on Linux servers, and interviewers expect you to know more than just SQL queries.

They want to see if you understand how MySQL interacts with the Linux operating system, how to troubleshoot performance issues at the OS level, and how to manage databases through the command line.

We received several emails from our readers asking for questions that combine both MySQL and Linux knowledge. One reader specifically mentioned, “Your questions are good, but they don’t cover the system administration side of MySQL which is crucial for DBA roles.” Fair point. That’s exactly what we’re addressing today.

The post 10 MySQL Interview Questions Every DBA Must Know appeared first on Linux Today.

Intel Xe3P_LPD Display Support For Linux Being Built Out Ahead Of Nova Lake

Earlier this month Intel Linux software engineers began posting patches for enabling Xe3P kernel graphics driver support with initial usage by Nova Lake processors and later the expected Celestial discrete GPUs. That initial Xe3P iGPU support is going into Linux 6.19 but expect more feature additions and optimizations in follow-on kernel cycles in 2026. Similarly the patches have now begun coming out for enabling the display engine capabilities for “Xe3P_LPD” for actually being able to drive displays (monitors) with Xe3P on Nova Lake…

Linux 6.19 To Enable Networking For The EIC7700 SoC Powering The SiFive Premier P550

Upstreamed for the current Linux 6.18 cycle was finally having mainline support for the ESWIN EIC770 SoC with its four SiFive P550 cores plus having the DeviceTree support for the SiFive HiFive Premier P550 RISC-V development board using that SoC. Sadly not making it though for Linux 6.18 was the Ethernet controller support for the EIC7700 SoC but that is now destined to arrive in Linux 6.19…