[PATCH RESEND v9 03/10] sched: remove frequency scaling from cpu_capacity

Vincent Guittot
2015-01-15T10:17:39Z

Now that arch_scale_cpu_capacity has been introduced to scale the original
capacity, the arch_scale_freq_capacity is no longer used (it was
previously used by ARM arch). Remove arch_scale_freq_capacity from the
computation of cpu_capacity. The frequency invariance will be handled in the
load tracking and not in the CPU capacity. arch_scale_freq_capacity will be
revisited for scaling load with the current frequency of the CPUs in a later
patch.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
---
kernel/sched/fair.c | 7 -------
1 file changed, 7 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index a171e1b..a96affd 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5823,13 +5823,6 @@ static void update_cpu_capacity(struct sched_domain *sd, int cpu)

sdg->sgc->capacity_orig = capacity;

- if (sched_feat(ARCH_CAPACITY))
- capacity *= arch_scale_freq_capacity(sd, cpu);
- else
- capacity *= default_scale_capacity(sd, cpu);
-
- capacity >>= SCHED_CAPACITY_SHIFT;
-
capacity *= scale_rt_capacity(cpu);
capacity >>= SCHED_CAPACITY_SHIFT;

--
1.9.1