[Buildroot] [PATCH v2] xenomai: Add config for enabling/disabling SMP
Pawel Sikora
sikor6 at gmail.com
Mon Apr 10 00:17:00 UTC 2017
Add a config option for enabling/disabling SMP
in Xenomai userspace in version 3.x
Enabled by default.
Signed-off-by: Pawel Sikora <sikor6 at gmail.com>
---
Changes v1 -> v2:
- default y, moving comment to help, changed help, adding explicitly
--disable-smp opt in the else statement (suggested by Arnout V.)
package/xenomai/Config.in | 24 ++++++++++++++++++++++++
package/xenomai/xenomai.mk | 6 ++++++
2 files changed, 30 insertions(+)
diff --git a/package/xenomai/Config.in b/package/xenomai/Config.in
index b548ee810..b2697e5af 100644
--- a/package/xenomai/Config.in
+++ b/package/xenomai/Config.in
@@ -51,6 +51,30 @@ config BR2_PACKAGE_XENOMAI_VERSION
BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH, in the Linux
Kernel -> Linux Kernel Extensions menu.
+config BR2_PACKAGE_XENOMAI_ENABLE_SMP
+ bool "Enable SMP"
+ default y
+ help
+ This option allows to enable SMP in Xenomai userspace.
+
+ Please note:
+ If you use Xenomai 2.x you have SMP enabled by default.
+
+ Xenomai 3.x is being built by default with SMP disabled,
+ but to have a behaviour similar to previous versions,
+ option is enabled by default and you need to uncheck it
+ if you don't need it.
+
+ Second reason of setting it by default is that Xenomai
+ userspace with SMP enabled and with Linux Kernel without
+ SMP config are working fine together.
+ But NOT the other way around.
+
+ Please refer to this troubleshooting guide for more
+ information in section "feature mismatch: missing=”smp/nosmp”:
+
+ https://xenomai.org/troubleshooting-a-dual-kernel-configuration/
+
config BR2_PACKAGE_XENOMAI_TESTSUITE
bool "Install testsuite"
help
diff --git a/package/xenomai/xenomai.mk b/package/xenomai/xenomai.mk
index c9e810e05..04880e69a 100644
--- a/package/xenomai/xenomai.mk
+++ b/package/xenomai/xenomai.mk
@@ -23,6 +23,12 @@ XENOMAI_INSTALL_STAGING_OPTS = DESTDIR=$(STAGING_DIR) install-user
XENOMAI_CONF_OPTS += --includedir=/usr/include/xenomai/ --disable-doc-install
+ifeq ($(BR2_PACKAGE_XENOMAI_ENABLE_SMP),y)
+XENOMAI_CONF_OPTS += --enable-smp
+else
+XENOMAI_CONF_OPTS += --disable-smp
+endif
+
define XENOMAI_REMOVE_DEVFILES
for i in xeno-config xeno-info wrap-link.sh ; do \
rm -f $(TARGET_DIR)/usr/bin/$$i ; \
--
2.12.1
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