Messages in this thread | | | Date | Wed, 10 Jul 2013 06:10:59 -0700 | From | Arjan van de Ven <> | Subject | Re: [RFC][PATCH 8/9] sched: power: Add initial frequency scaling support to power scheduler |
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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)
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