Hi Anhur, On Tue, Nov 07, 2023 at 03:08:21PM -0800, Ankur Arora wrote: > There are broadly three sets of uses of cond_resched(): > > 1. Calls to cond_resched() out of the goodness of our heart, > otherwise known as avoiding lockup splats. ... What about RCU stalls? The calls to cond_resched() in evdev.c and mousedev.c were added specifically to allow RCU to run in cases when userspace passes a large buffer and the kernel is not fully preemptable. Thanks. -- Dmitry
