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Message-Id: <1452262172-31861-2-git-send-email-juri.lelli@arm.com>
Date: Fri, 8 Jan 2016 14:09:29 +0000
From: Juri Lelli <juri.lelli@....com>
To: linux-kernel@...r.kernel.org
Cc: linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
peterz@...radead.org, vincent.guittot@...aro.org,
robh+dt@...nel.org, mark.rutland@....com, linux@....linux.org.uk,
sudeep.holla@....com, lorenzo.pieralisi@....com,
catalin.marinas@....com, will.deacon@....com,
morten.rasmussen@....com, dietmar.eggemann@....com,
juri.lelli@....com, broonie@...nel.org
Subject: [RFC PATCH v2 1/4] ARM: initialize cpu_scale to its default
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@....linux.org.uk>
Acked-by: Vincent Guittot <vincent.guittot@...aro.org>
Signed-off-by: Juri Lelli <juri.lelli@....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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