Re: AMD64 X2 lost ticks on PM timer

Andi Kleen
2006-03-01T18:30:14Z

On Wednesday 01 March 2006 19:07, Bill Rugolsky Jr. wrote:

> Mar 1 11:39:27 ti94 kernel: time.c: Lost 1 timer tick(s)! rip __do_softirq+0x55/0xd4)

Yes, I bet something forgets to turn on interrupts again and it's picked up by
(and blamed on) the next guy who does an unconditional sti, which happens to be __do_sofitrq
or idle.

> Time to instrument sata_nv, I suppose. Many thanks for helping to narrow this
> down.

Sprinkle WARN_ON(in_interrupt()) all over the parts that shouldn't have interrupts
off.

-Andi