Ubuntu
linux-lowlatency package

  1. Bug #1275116
  2. Comment #68

Comment 68 for bug 1275116

Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

Thanks for the added information, Jamie. Have you tried various combinations of the three parameters:

CONFIG_IRQ_FORCED_THREADING_DEFAULT=n
CONFIG_PREEMPT=n
CONFIG_PREEMPT_RCU=n

It would be good to know if we only need to disable one of these parameters. In particular it would be good to know if setting CONFIG_IRQ_FORCED_THREADING_DEFAULT to n and the two PREEMPT options to y also resolves the bug. I know we tried using the nothreadirqs option, but it would be good to confirm by disabling it in the config.

I can build you a kernel with CONFIG_IRQ_FORCED_THREADING_DEFAULT un-set, unless you want to build one yourself?