Ubuntu
linux-lowlatency package

  1. Bug #1275116
  2. Comment #20

Comment 20 for bug 1275116

Revision history for this message
Søren Holm (sgh) wrote :

Apparently CONFIG_IRQ_FORCED_THREADING_DEFAULT is not an upstream config flag.

The resulting param force_irqthreads is not set no true unless "threadirqs" are on the kernel commandline.

In the problematic kernel it is set to true by default - something that will never happen on a vanilla kernel.

It can be turned off using "nothreadirqs" on the commandline - which is exactly what I'm going to try now.