[Xenomai-core] [PATCH] let skins select nucleus features

[Jan Kiszka <jan.kiszka@domain.hid>]

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Hi,

this patch aims at avoiding to select unneeded nucleus features if no
user is requiring it in the skins. Particularly, it addresses the
nucleus registry and the pipes.

I have spent no effort on 2.4 yet as I first want to wait for comments.
Furthermore, 2.4. is lacking "select", so the feature selection has to
remain manually there anyway.

Jan

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Index: ksrc/nucleus/Kconfig
===================================================================
--- ksrc/nucleus/Kconfig	(revision 924)
+++ ksrc/nucleus/Kconfig	(working copy)
@@ -32,15 +32,7 @@ config XENO_OPT_SECURITY_ACCESS
 	think twice before switching this off.
 
 config XENO_OPT_PIPE
-	bool "Message pipes"
-	default y
-	help
-
-	Message pipes are bi-directional FIFO communication
-	channels allowing data exchange between real-time kernel
-	threads and regular user-space processes. Pipes natively
-	preserve message boundaries, but can also be used in byte
-	streaming mode from kernel to user-space.
+	bool
 
 config XENO_OPT_PIPE_NRDEV
 	int "Number of pipe devices"
@@ -48,14 +40,23 @@ config XENO_OPT_PIPE_NRDEV
 	default 32
 	help
 	
+	Message pipes are bi-directional FIFO communication
+	channels allowing data exchange between real-time kernel
+	threads and regular user-space processes. Pipes natively
+	preserve message boundaries, but can also be used in byte
+	streaming mode from kernel to user-space.
+	
 	This option sets the maximum number of pipe devices supported
 	in the system. Pipe devices are named /dev/rtpN where N is a
 	device minor number ranging from 0 to XENO_OPT_PIPE_NRDEV - 1.
 
 config XENO_OPT_REGISTRY
 	bool
-	prompt "Registry support" if !XENO_OPT_PERVASIVE
-	default y
+
+config XENO_OPT_REGISTRY_NRSLOTS
+	int "Number of registry slots"
+	depends on XENO_OPT_REGISTRY
+	default 512
 	help
 	
 	The registry is used by Xenomai skins to bind real-time
@@ -63,12 +64,6 @@ config XENO_OPT_REGISTRY
 	can be further retrieved and shared by real-time applications
 	regardless of their runtime space (i.e. kernel or user). Each
 	named object occupies a registry slot.
-
-config XENO_OPT_REGISTRY_NRSLOTS
-	int "Number of registry slots"
-	depends on XENO_OPT_REGISTRY
-	default 512
-	help
 	
 	This option sets the maximum number of real-time objects the
 	registry can handle. All skins using the registry share this
Index: ksrc/skins/vrtx/Kconfig
===================================================================
--- ksrc/skins/vrtx/Kconfig	(revision 924)
+++ ksrc/skins/vrtx/Kconfig	(working copy)
@@ -1,7 +1,7 @@
 config XENO_SKIN_VRTX
 	depends on XENO_OPT_NUCLEUS
 	tristate "VRTX emulator"
-	default n
+	select XENO_OPT_REGISTRY
 	help
 
 	This API skin emulates Mentor Graphics's VRTX operating
Index: ksrc/skins/vxworks/Kconfig
===================================================================
--- ksrc/skins/vxworks/Kconfig	(revision 924)
+++ ksrc/skins/vxworks/Kconfig	(working copy)
@@ -1,7 +1,7 @@
 config XENO_SKIN_VXWORKS
 	depends on XENO_OPT_NUCLEUS
 	tristate "VxWorks emulator"
-	default n
+	select XENO_OPT_REGISTRY
 	help
 
 	This API skin emulates WindRiver's VxWorks operating system.
Index: ksrc/skins/native/Kconfig
===================================================================
--- ksrc/skins/native/Kconfig	(revision 924)
+++ ksrc/skins/native/Kconfig	(working copy)
@@ -10,7 +10,7 @@ if XENO_SKIN_NATIVE != n
 
 config XENO_OPT_NATIVE_PIPE
 	bool "Message pipes"
-	depends on XENO_OPT_PIPE
+	select XENO_OPT_PIPE
 	default y
 	help
 	
@@ -33,6 +33,18 @@ config XENO_OPT_NATIVE_PIPE_BUFSZ
 	This option sets the memory size available for per-pipe
 	buffering when message pipes are used in byte stream mode.
 
+config XENO_OPT_NATIVE_REGISTRY
+	bool
+	prompt "Registry support" if !XENO_OPT_PERVASIVE
+	select XENO_OPT_REGISTRY
+	default y
+	help
+	
+	The registry is used to bind real-time objects to symbolic names,
+	so that these objects can be further retrieved and shared by
+	real-time applications regardless of their runtime space (i.e.
+	kernel or user). Each named object occupies a registry slot.
+
 config XENO_OPT_NATIVE_SEM
 	bool "Counting semaphores"
 	default y


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