[PATCH] arm: sched: stop sched_clock() during suspend
Russell King - ARM Linux
linux at arm.linux.org.uk
Tue Oct 23 12:03:31 EDT 2012
On Tue, Oct 23, 2012 at 07:17:33AM -0700, Kevin Hilman wrote:
> Russell King - ARM Linux <linux at arm.linux.org.uk> writes:
> > No, printk() does not need this. You think it does, but it doesn't. What
> > we have is a difference between ARM and x86, and this difference is breaking
> > the scheduler.
> >
> > The fact that the printk timestamp increments while suspended is a bug. It
> > doesn't on x86.
>
> Russell, I agree that it's a bug, but does it qualify as a something
> you're willing to take for v3.7-rc?
Definitely. Our current behaviour across suspend for the scheduler is
wrong. This is one of the questions I had when I created the sched_clock
stuff - but no one at the time could answer. So, now that we have our
answer, let's get it fixed to conform.
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