linux-kernel - [PATCH 15/43] MN10300: Cache: Split cache bits out of arch Kconfig

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Date:	Tue, 26 Oct 2010 03:54:21 +0100
From:	David Howells <dhowells@...hat.com>
To:	linux-am33-list@...hat.com
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 15/43] MN10300: Cache: Split cache bits out of arch Kconfig

Split the cache bits out of arch/mn10300/Kconfig as they're quite complex.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 arch/mn10300/Kconfig          |   29 +----------------------------
 arch/mn10300/mm/Kconfig.cache |   32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 28 deletions(-)
 create mode 100644 arch/mn10300/mm/Kconfig.cache


diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index eab0c2a..069e34d 100644
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -136,34 +136,7 @@ config FPU
 	default y
 	depends on MN10300_PROC_MN103E010
 
-choice
-	prompt "CPU Caching mode"
-	default MN10300_CACHE_WBACK
-	help
-	  This option determines the caching mode for the kernel.
-
-	  Write-Back caching mode involves the all reads and writes causing
-	  the affected cacheline to be read into the cache first before being
-	  operated upon. Memory is not then updated by a write until the cache
-	  is filled and a cacheline needs to be displaced from the cache to
-	  make room. Only at that point is it written back.
-
-	  Write-Through caching only fetches cachelines from memory on a
-	  read. Writes always get written directly to memory. If the affected
-	  cacheline is also in cache, it will be updated too.
-
-	  The final option is to turn of caching entirely.
-
-config MN10300_CACHE_WBACK
-	bool "Write-Back"
-
-config MN10300_CACHE_WTHRU
-	bool "Write-Through"
-
-config MN10300_CACHE_DISABLED
-	bool "Disabled"
-
-endchoice
+source "arch/mn10300/mm/Kconfig.cache"
 
 menu "Memory layout options"
 
diff --git a/arch/mn10300/mm/Kconfig.cache b/arch/mn10300/mm/Kconfig.cache
new file mode 100644
index 0000000..f5599f4
--- /dev/null
+++ b/arch/mn10300/mm/Kconfig.cache
@@ -0,0 +1,32 @@
+#
+# MN10300 CPU cache options
+#
+
+choice
+	prompt "CPU Caching mode"
+	default MN10300_CACHE_WBACK
+	help
+	  This option determines the caching mode for the kernel.
+
+	  Write-Back caching mode involves the all reads and writes causing
+	  the affected cacheline to be read into the cache first before being
+	  operated upon. Memory is not then updated by a write until the cache
+	  is filled and a cacheline needs to be displaced from the cache to
+	  make room. Only at that point is it written back.
+
+	  Write-Through caching only fetches cachelines from memory on a
+	  read. Writes always get written directly to memory. If the affected
+	  cacheline is also in cache, it will be updated too.
+
+	  The final option is to turn of caching entirely.
+
+config MN10300_CACHE_WBACK
+	bool "Write-Back"
+
+config MN10300_CACHE_WTHRU
+	bool "Write-Through"
+
+config MN10300_CACHE_DISABLED
+	bool "Disabled"
+
+endchoice

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