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    Subject[RFC PATCH 1/8] ARM: initialize cpu_scale to its default
    Date
    Instead of looping through all cpus calling set_capacity_scale, we can
    initialise cpu_scale per-cpu variables to SCHED_CAPACITY_SCALE with their
    definition.

    Cc: Russell King <linux@arm.linux.org.uk>
    Signed-off-by: Juri Lelli <juri.lelli@arm.com>
    ---
    arch/arm/kernel/topology.c | 4 +---
    1 file changed, 1 insertion(+), 3 deletions(-)

    diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
    index 08b7847..ec279d1 100644
    --- a/arch/arm/kernel/topology.c
    +++ b/arch/arm/kernel/topology.c
    @@ -40,7 +40,7 @@
    * to run the rebalance_domains for all idle cores and the cpu_capacity can be
    * updated during this sequence.
    */
    -static DEFINE_PER_CPU(unsigned long, cpu_scale);
    +static DEFINE_PER_CPU(unsigned long, cpu_scale) = SCHED_CAPACITY_SCALE;

    unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu)
    {
    @@ -306,8 +306,6 @@ void __init init_cpu_topology(void)
    cpu_topo->socket_id = -1;
    cpumask_clear(&cpu_topo->core_sibling);
    cpumask_clear(&cpu_topo->thread_sibling);
    -
    - set_capacity_scale(cpu, SCHED_CAPACITY_SCALE);
    }
    smp_wmb();

    --
    2.2.2


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