Re: [PATCH v5 3/9] task_isolation: userspace hard isolation from kernel

2020-11-23 Thread Thomas Gleixner
Alex, On Mon, Nov 23 2020 at 17:56, Alex Belits wrote: > .../admin-guide/kernel-parameters.txt | 6 + > drivers/base/cpu.c| 23 + > include/linux/hrtimer.h | 4 + > include/linux/isolation.h | 326 > inclu

[PATCH v5 3/9] task_isolation: userspace hard isolation from kernel

2020-11-23 Thread Alex Belits
The existing nohz_full mode is designed as a "soft" isolation mode that makes tradeoffs to minimize userspace interruptions while still attempting to avoid overheads in the kernel entry/exit path, to provide 100% kernel semantics, etc. However, some applications require a "hard" commitment from th