linux-kernel - [PATCH 01/13] hperf_hmp: add new config for arm and arm64.

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Date:	Fri, 06 Nov 2015 15:02:35 +0300
From:	Arseniy Krasnov <a.krasnov@...sung.com>
To:	linux@....linux.org.uk, mingo@...hat.com, peterz@...radead.org
Cc:	a.krasnov@...sung.com, v.tyrtov@...sung.com,
	s.rogachev@...sung.com, linux-kernel@...r.kernel.org,
	Tarek Dakhran <t.dakhran@...sung.com>,
	Sergey Dyasly <s.dyasly@...sung.com>,
	Dmitriy Safonov <d.safonov@...tner.samsung.com>,
	Ilya Maximets <i.maximets@...sung.com>
Subject: [PATCH 01/13] hperf_hmp: add new config for arm and arm64.

	New config option which enables new scheduler logic: HPERF_HMP. Also
adds the following options:
'HPERF_HMP_DEBUG': enables extra runtime checks of balancing parameteres.
'HMP_FAST_CPU_MASK': CPU mask of A15 cluster(in hex string).
'HMP_SLOW_CPU_MASK': CPU mask of A7 cluster(in hex string).

Signed-off-by: Tarek Dakhran <t.dakhran@...sung.com>
Signed-off-by: Sergey Dyasly <s.dyasly@...sung.com>
Signed-off-by: Dmitriy Safonov <d.safonov@...tner.samsung.com>
Signed-off-by: Arseniy Krasnov <a.krasnov@...sung.com>
Signed-off-by: Ilya Maximets <i.maximets@...sung.com>
---
 arch/arm/Kconfig   | 21 +++++++++++++++++++++
 arch/arm64/Kconfig | 21 +++++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 72ad724..0581914 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1387,6 +1387,27 @@ config SCHED_MC
 	  making when dealing with multi-core CPU chips at a cost of slightly
 	  increased overhead in some places. If unsure say N here.
 
+config HPERF_HMP
+	bool "HPERF_HMP load balancing enhancements for ARM big.LITTLE"
+	select SCHED_MC
+	help
+	  Uses HPERF_HMP load balancing algorithm between A7 and A15 CPU domains.
+
+config HPERF_HMP_DEBUG
+	bool "Additional HPERF_HMP runtime debug checks"
+	depends on HPERF_HMP
+	default n
+
+config HMP_FAST_CPU_MASK
+	string "Fast (Cortex-A15) CPU mask for HPERF_HMP"
+	default ""
+	depends on HPERF_HMP
+
+config HMP_SLOW_CPU_MASK
+	string "Slow (Cortex-A7) CPU mask for HPERF_HMP"
+	default ""
+	depends on HPERF_HMP
+
 config SCHED_SMT
 	bool "SMT scheduler support"
 	depends on ARM_CPU_TOPOLOGY
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 07d1811..71a8983 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -412,6 +412,27 @@ config SCHED_MC
 	  making when dealing with multi-core CPU chips at a cost of slightly
 	  increased overhead in some places. If unsure say N here.
 
+config HPERF_HMP
+	bool "HPERF_HMP load balancing enhancements for ARM big.LITTLE"
+	select SCHED_MC
+	help
+	  Uses HPERF_HMP load balancing algorithm between A7 and A15 CPU domains.
+
+config HPERF_HMP_DEBUG
+	bool "Additional HPERF_HMP runtime debug checks"
+	depends on HPERF_HMP
+	default n
+
+config HMP_FAST_CPU_MASK
+	string "Fast (Cortex-A15) CPU mask for HPERF_HMP"
+	default ""
+	depends on HPERF_HMP
+
+config HMP_SLOW_CPU_MASK
+	string "Slow (Cortex-A7) CPU mask for HPERF_HMP"
+	default ""
+	depends on HPERF_HMP
+
 config SCHED_SMT
 	bool "SMT scheduler support"
 	help
-- 
1.9.1

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