Can I prevent a Linux user space pthread yielding in critical code?

Question

I am working on an user space app for an embedded Linux project using the 2.6.24.3 kernel. My app passes data between two file nodes by creating 2 pthreads that each sleep

Answer 1

I believe you are trying to outsmart the Linux scheduler here, for the wrong reasons.

The correct solution is to use a mutex to prevent completion handlers from running in parallel. Let the scheduler do its job.