Deferrable timers

Arjan van de Ven arjan at linux.intel.com
Fri Jul 27 20:08:09 PDT 2007


Scott Lamb wrote:
> First, thanks for the great tool.
> 
> I noticed that deferrable timers are now flagged by the kernel with a
> 'D' at the end of the count. My understanding is that deferrable timers
>  don't run until the next non-deferrable timer is scheduled. Is that
> correct?
> 
> If so, I believe PowerTOP shouldn't show them in its blamelist, as they
> do not cause wakeups. I've attached a patch to this effect. I tried to
> future-proof it against other flags being added.

oh great!
I just compiled the latest kernel to go add this very same thing to 
powertop tonight... but thanks a lot for beating me to it.. I'll add 
this to the codebase right away!

Greetings,
    Arjan van de Ven




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