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Groups > linux.kernel > #1609848

[PATCH v3 8/9] arm,arm64,drivers: move externs in a new header file

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Create a new header file (include/linux/arch_topology.h) and put there
declarations of interfaces used by arm, arm64 and drivers code.

Signed-off-by: Juri Lelli <juri.lelli@arm.com>
---
 arch/arm/kernel/topology.c    |  7 +------
 arch/arm64/kernel/topology.c  |  4 +---
 drivers/base/arch_topology.c  |  1 +
 include/linux/arch_topology.h | 17 +++++++++++++++++
 4 files changed, 20 insertions(+), 9 deletions(-)
 create mode 100644 include/linux/arch_topology.h

diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index 1e35a3265ddf..557be4f1d2d7 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -11,6 +11,7 @@
  * for more details.
  */
 
+#include <linux/arch_topology.h>
 #include <linux/cpu.h>
 #include <linux/cpufreq.h>
 #include <linux/cpumask.h>
@@ -45,10 +46,6 @@
  * updated during this sequence.
  */
 
-extern unsigned long
-arch_scale_cpu_capacity(struct sched_domain *sd, int cpu);
-extern void set_capacity_scale(unsigned int cpu, unsigned long capacity);
-
 #ifdef CONFIG_OF
 struct cpu_efficiency {
 	const char *compatible;
@@ -76,8 +73,6 @@ static unsigned long *__cpu_capacity;
 
 static unsigned long middle_capacity = 1;
 static bool cap_from_dt = true;
-extern void normalize_cpu_capacity(void);
-extern int __init parse_cpu_capacity(struct device_node *cpu_node, int cpu);
 
 /*
  * Iterate all CPUs' descriptor in DT and compute the efficiency
diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c
index 7e1f6f75185b..255230c3e835 100644
--- a/arch/arm64/kernel/topology.c
+++ b/arch/arm64/kernel/topology.c
@@ -11,6 +11,7 @@
  * for more details.
  */
 
+#include <linux/arch_topology.h>
 #include <linux/cpu.h>
 #include <linux/cpumask.h>
 #include <linux/init.h>
@@ -27,9 +28,6 @@
 #include <asm/cputype.h>
 #include <asm/topology.h>
 
-extern void normalize_cpu_capacity(void);
-extern int __init parse_cpu_capacity(struct device_node *cpu_node, int cpu);
-
 static int __init get_cpu_for_node(struct device_node *node)
 {
 	struct device_node *cpu_node;
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 6543a032b332..0fc77fa900a9 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -13,6 +13,7 @@
  */
 
 #include <linux/acpi.h>
+#include <linux/arch_topology.h>
 #include <linux/cpu.h>
 #include <linux/cpufreq.h>
 #include <linux/device.h>
diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h
new file mode 100644
index 000000000000..4edae9fe8cdd
--- /dev/null
+++ b/include/linux/arch_topology.h
@@ -0,0 +1,17 @@
+/*
+ * include/linux/arch_topology.h - arch specific cpu topology information
+ */
+#ifndef _LINUX_ARCH_TOPOLOGY_H_
+#define _LINUX_ARCH_TOPOLOGY_H_
+
+void normalize_cpu_capacity(void);
+
+struct device_node;
+int parse_cpu_capacity(struct device_node *cpu_node, int cpu);
+
+struct sched_domain;
+unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu);
+
+void set_capacity_scale(unsigned int cpu, unsigned long capacity);
+
+#endif /* _LINUX_ARCH_TOPOLOGY_H_ */
-- 
2.10.0

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[PATCH v3 0/9] Fix issues and factorize arm/arm64 capacity information code Juri Lelli <juri.lelli@arm.com> - 2017-03-27 15:20 +0200
  [PATCH v3 7/9] arm,arm64,drivers: reduce scope of cap_parsing_failed Juri Lelli <juri.lelli@arm.com> - 2017-03-27 15:20 +0200
    Re: [PATCH v3 7/9] arm,arm64,drivers: reduce scope of  cap_parsing_failed Catalin Marinas <catalin.marinas@arm.com> - 2017-04-10 10:40 +0200
  [PATCH v3 3/9] arm: fix return value of parse_cpu_capacity Juri Lelli <juri.lelli@arm.com> - 2017-03-27 15:20 +0200
    Re: [PATCH v3 3/9] arm: fix return value of parse_cpu_capacity Vincent Guittot <vincent.guittot@linaro.org> - 2017-03-29 09:40 +0200
      Re: [PATCH v3 3/9] arm: fix return value of parse_cpu_capacity Juri Lelli <juri.lelli@arm.com> - 2017-03-29 10:10 +0200
  [PATCH v3 2/9] Documentation/ABI: add information about cpu_capacity Juri Lelli <juri.lelli@arm.com> - 2017-03-27 15:20 +0200
  [PATCH v3 6/9] drivers: remove useless comment from base/arch_topology.c Juri Lelli <juri.lelli@arm.com> - 2017-03-27 15:30 +0200
    Re: [PATCH v3 6/9] drivers: remove useless comment from  base/arch_topology.c Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-04-10 16:00 +0200
      Re: [PATCH v3 6/9] drivers: remove useless comment from  base/arch_topology.c Juri Lelli <juri.lelli@arm.com> - 2017-04-10 16:10 +0200
  [PATCH v3 9/9] arm,arm64,drivers: add a prefix to drivers arch_topology interfaces Juri Lelli <juri.lelli@arm.com> - 2017-03-27 15:30 +0200
    Re: [PATCH v3 9/9] arm, arm64, drivers: add a prefix to drivers  arch_topology interfaces Catalin Marinas <catalin.marinas@arm.com> - 2017-04-10 10:40 +0200
  [PATCH v3 5/9] arm, arm64: factorize common cpu capacity default code Juri Lelli <juri.lelli@arm.com> - 2017-03-27 15:50 +0200
    Re: [PATCH v3 5/9] arm, arm64: factorize common cpu capacity default  code Greg KH <gregkh@linuxfoundation.org> - 2017-04-08 18:30 +0200
    Re: [PATCH v3 5/9] arm, arm64: factorize common cpu capacity default  code Catalin Marinas <catalin.marinas@arm.com> - 2017-04-10 10:20 +0200
  [PATCH v3 8/9] arm,arm64,drivers: move externs in a new header file Juri Lelli <juri.lelli@arm.com> - 2017-03-27 15:50 +0200
    Re: [PATCH v3 8/9] arm,arm64,drivers: move externs in a new header  file Catalin Marinas <catalin.marinas@arm.com> - 2017-04-10 10:40 +0200
  Re: [PATCH v3 0/9] Fix issues and factorize arm/arm64 capacity  information code Juri Lelli <juri.lelli@arm.com> - 2017-04-06 16:20 +0200

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