Re: [RFC PATCH 1/8] ARM: initialize cpu_scale to its default
From: Vincent Guittot <vincent.guittot@linaro.org>
Date: 2015-11-30 11:13:27
Also in:
linux-arm-kernel, linux-pm, lkml
From: Vincent Guittot <vincent.guittot@linaro.org>
Date: 2015-11-30 11:13:27
Also in:
linux-arm-kernel, linux-pm, lkml
On 23 November 2015 at 15:28, Juri Lelli [off-list ref] wrote:
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 <redacted> Signed-off-by: Juri Lelli <redacted> --- 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();
FWIW, Acked-by: Vincent Guittot [off-list ref]
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