On 07/01/2016 01:36 PM, Daniel Lezcano wrote:
> On 06/30/2016 05:37 PM, Nicolas Pitre wrote:
>> On Thu, 30 Jun 2016, Daniel Lezcano wrote:
>>> +}
+}
>>>
>>>
>>> What bothers me with this division is the benefit of adding an extra
>>> ultra
>>> optimized division by 1000 in cpuidle.h whil
On Fri, 1 Jul 2016, Balbir Singh wrote:
> On Fri, 2016-07-01 at 10:06 +0200, Daniel Lezcano wrote:
> > On 06/30/2016 05:37 PM, Nicolas Pitre wrote:
> > >
> > > On Thu, 30 Jun 2016, Daniel Lezcano wrote:
> > [ ... ]
> >
> > >
> > > >
> > > > >
> > > > > + if (likely(nsec < DIV_APPROXIMATIO
On Fri, 1 Jul 2016, Daniel Lezcano wrote:
> On 06/30/2016 05:37 PM, Nicolas Pitre wrote:
> > On Thu, 30 Jun 2016, Daniel Lezcano wrote:
>
> [ ... ]
>
> > > > + if (likely(nsec < DIV_APPROXIMATION_THRESHOLD)) {
> > > > + u32 usec = nsec;
> > > > +
> > > > + usec
On Fri, 2016-07-01 at 10:06 +0200, Daniel Lezcano wrote:
> On 06/30/2016 05:37 PM, Nicolas Pitre wrote:
> >
> > On Thu, 30 Jun 2016, Daniel Lezcano wrote:
> [ ... ]
>
> >
> > >
> > > >
> > > > + if (likely(nsec < DIV_APPROXIMATION_THRESHOLD)) {
> > > > + u32 usec = nsec;
>
On 06/30/2016 05:37 PM, Nicolas Pitre wrote:
On Thu, 30 Jun 2016, Daniel Lezcano wrote:
[ ... ]
+ if (likely(nsec < DIV_APPROXIMATION_THRESHOLD)) {
+ u32 usec = nsec;
+
+ usec += usec >> 5;
+ usec = usec >> 10;
+
+ /* Can safely ca
On Thu, 30 Jun 2016, Daniel Lezcano wrote:
> On 06/30/2016 04:34 PM, Shreyas B. Prabhu wrote:
> > Snooze is a poll idle state in powernv and pseries platforms. Snooze
> > has a timeout so that if a cpu stays in snooze for more than target
> > residency of the next available idle state, then it wou
On 06/30/2016 04:34 PM, Shreyas B. Prabhu wrote:
Snooze is a poll idle state in powernv and pseries platforms. Snooze
has a timeout so that if a cpu stays in snooze for more than target
residency of the next available idle state, then it would exit thereby
giving chance to the cpuidle governor to
Snooze is a poll idle state in powernv and pseries platforms. Snooze
has a timeout so that if a cpu stays in snooze for more than target
residency of the next available idle state, then it would exit thereby
giving chance to the cpuidle governor to re-evaluate and
promote the cpu to a deeper idle s
