[RFC PATCH 6/6] drivers: base: arch_topology.c: Enable EAS for arm/arm64 platforms

Dietmar Eggemann
2018-03-20T09:43:12Z

From: Quentin Perret <quentin.perret@arm.com>

Energy Aware Scheduling (EAS) has to be started from the arch code.
This commit enables it from the arch topology driver for arm/arm64
systems, hence enabling a better support for Arm big.LITTLE and future
DynamIQ architectures.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
---
drivers/base/arch_topology.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 52ec5174bcb1..e2206ea16538 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -15,6 +15,7 @@
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/sched/topology.h>
+#include <linux/sched/energy.h>

DEFINE_PER_CPU(unsigned long, freq_scale) = SCHED_CAPACITY_SCALE;

@@ -204,6 +205,7 @@ init_cpu_capacity_callback(struct notifier_block *nb,
free_raw_capacity();
pr_debug("cpu_capacity: parsing done\n");
schedule_work(&parsing_done_work);
+ init_sched_energy();
}

return 0;
--
2.11.0