I-Pipe

I-Pipe is a solution for interrupt latency
Associated with ADEOS and RTAI

Replaces the Linux interrupt handler
Creates a pipeline of handlers
Sorted by priority
Hardware interrupts are never disabled
High-priority task shorts out Linux entirely

Ups and downs
Deterministic interrupt response
Very little code to audit
Relatively simple patch
No Linux services for high-priority handler
RTAI-Fusion addresses this