On 21-Jan 16:05, Peter Zijlstra wrote:
> On Tue, Jan 15, 2019 at 10:15:00AM +, Patrick Bellasi wrote:
> > +static inline unsigned int uclamp_bucket_value(unsigned int clamp_value)
> > +{
> > +#define UCLAMP_BUCKET_DELTA (SCHED_CAPACITY_SCALE /
> > CONFIG_UCLAMP_BUCKETS_COUNT)
> > +#define
On Tue, Jan 15, 2019 at 10:15:00AM +, Patrick Bellasi wrote:
> +static inline unsigned int uclamp_bucket_value(unsigned int clamp_value)
> +{
> +#define UCLAMP_BUCKET_DELTA (SCHED_CAPACITY_SCALE /
> CONFIG_UCLAMP_BUCKETS_COUNT)
> +#define UCLAMP_BUCKET_UPPER (UCLAMP_BUCKET_DELTA *
>
On Mon, Jan 21, 2019 at 12:27:10PM +, Patrick Bellasi wrote:
> On 21-Jan 11:15, Peter Zijlstra wrote:
> > On Tue, Jan 15, 2019 at 10:15:00AM +, Patrick Bellasi wrote:
> > > +/*
> > > + * Number of utilization clamp buckets.
> > > + *
> > > + * The first clamp bucket (bucket_id=0) is used
On 21-Jan 11:15, Peter Zijlstra wrote:
> On Tue, Jan 15, 2019 at 10:15:00AM +, Patrick Bellasi wrote:
> > +/*
> > + * Number of utilization clamp buckets.
> > + *
> > + * The first clamp bucket (bucket_id=0) is used to track non clamped
> > tasks, i.e.
> > + * util_{min,max}
On Tue, Jan 15, 2019 at 10:15:00AM +, Patrick Bellasi wrote:
> +/*
> + * Number of utilization clamp buckets.
> + *
> + * The first clamp bucket (bucket_id=0) is used to track non clamped tasks,
> i.e.
> + * util_{min,max} (0,SCHED_CAPACITY_SCALE). Thus we allocate one more bucket
> in
> + *
Utilization clamping requires each CPU to know which clamp values are
assigned to tasks RUNNABLE on that CPU. A per-CPU array of reference
counters can be used where each entry tracks how many RUNNABLE tasks
require the same clamp value on each CPU. However, the range of clamp
values is too wide
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