CODEWITHSUNDEEP
clinuxlinux-kerneldrivertasklet
user2699113
user2699113

Reputation: 4509

Problems with tasklets and interrupts in Linux

Let's assume that we have an interrupt handler and a tasklet in Linux. The tasklet is scheduled from this interrupt handler.

The interrupt handler works as a some kind of producer, and tasklet as consumer. The problem occurs when the tasklet runs for longer time and interrupt occures when this tasklet is still running. This interferences causes several calltraces in logs.

How to resolve this kind of interferences?

The only idea I've got is to move the interrupt handler to some workqueue or another tasklet and schedule it from the interrupt handler.

Is it ok? Any other ideas?

Upvotes: 0

Views: 583

Answers (1)

Long Yang
Long Yang

Reputation: 1

My suggestion is move the heavy process to the userspace, and add a frame drop

Upvotes: 0

Related Questions