Messages in this thread | | | Date | Fri, 12 Jul 2013 13:51:13 +0100 | From | Morten Rasmussen <> | Subject | Re: [RFC][PATCH 8/9] sched: power: Add initial frequency scaling support to power scheduler |
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On Wed, Jul 10, 2013 at 02:10:59PM +0100, Arjan van de Ven wrote: > On 7/9/2013 8:55 AM, Morten Rasmussen wrote: > > Extends the power scheduler capacity management algorithm to handle > > frequency scaling and provide basic frequency/P-state selection hints > > to the power driver. > > > > Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com> > > CC: Ingo Molnar <mingo@kernel.org> > > CC: Peter Zijlstra <peterz@infradead.org> > > CC: Catalin Marinas <catalin.marinas@arm.com> > > --- > > kernel/sched/power.c | 33 ++++++++++++++++++++++++++++----- > > 1 file changed, 28 insertions(+), 5 deletions(-) > > > > diff --git a/kernel/sched/power.c b/kernel/sched/power.c > > index 9e44c0e..5fc32b0 100644 > > --- a/kernel/sched/power.c > > +++ b/kernel/sched/power.c > > @@ -21,6 +21,8 @@ > > > > #define INTERVAL 5 /* ms */ > > #define CPU_FULL 90 /* Busy %-age - TODO: Make tunable */ > > +#define CPU_TARGET 80 /* Target busy %-age - TODO: Make tunable */ > > +#define CPU_EMPTY 5 /* Idle noise %-age - TODO: Make tunable */ > > > > to be honest, this is the policy part that really should be in the hardware specific driver > and not in the scheduler. > (even if said driver is sort of a "generic library" kind of thing)
I agree that the values should be set by a hardware specific power driver. Or do you mean that algorithms using this sort of values should be in the driver?
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