Linux Close to Enabling Real-Time "Preempt_rt" Support

The Linux kernel is nearing the integration of real-time "PREEMPT_RT" support, a feature that has been in development for several years. The final hurdle involves non-blocking console support, which is currently being addressed in the linux-next branch, with the aim of merging it into the upcoming Linux 6.12 release. A recent patch series from Sebastian Andrzej Siewior of Linutronix has highlighted that the necessary printk components for PREEMPT_RT are now in linux-next, marking the resolution of the last known obstacle. The atomic console support for the 8250 UART driver remains pending, which is crucial for emergency printing from atomic contexts. Once these components are finalized, PREEMPT_RT can be enabled across multiple architectures, including X86, ARM64, and Risc-V. While ARM and POWERPC still have some essential patches to be completed, the overall outlook is positive for the feature to be included in either the 6.12 or 6.13 kernel releases, with 6.12 expected to be this year's Long-Term Support (LTS) version.

- Linux kernel is close to enabling real-time "PREEMPT_RT" support.

- The last major blocker is non-blocking console support, currently in development.

- Recent patches indicate that necessary components for PREEMPT_RT are being integrated.

- The feature could be included in the upcoming Linux 6.12 or 6.13 releases.

- Linux 6.12 is set to be the Long-Term Support (LTS) version for this year.