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
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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