kernel,module-base class, bitbake.conf: introduce MACHINE_KERNEL_PR

* bandaid till we have a better way to track ABI changes

diff --git a/classes/kernel.bbclass b/classes/kernel.bbclass
index 17e8941..954c407 100644 (file)
--- a/classes/kernel.bbclass
+++ b/classes/kernel.bbclass
@@ -64,6 +64,10 @@ export CMDLINE_CONSOLE = "console=${@bb.data.getVar("KERNEL_CONSOLE",d,1) or "tt
 KERNEL_VERSION = "${@get_kernelversion('${S}')}"
 KERNEL_MAJOR_VERSION = "${@get_kernelmajorversion('${KERNEL_VERSION}')}"
 
+# A machine.conf or local.conf can increase MACHINE_KERNEL_PR to force
+# rebuilds for kernel and external modules
+PR = "${MACHINE_KERNEL_PR}"
+
 KERNEL_LOCALVERSION ?= ""
 
 # kernels are generally machine specific

diff --git a/classes/module-base.bbclass b/classes/module-base.bbclass
index c98bace..bc53e1b 100644 (file)
--- a/classes/module-base.bbclass
+++ b/classes/module-base.bbclass
@@ -5,6 +5,10 @@ inherit kernel-arch
 export OS = "${TARGET_OS}"
 export CROSS_COMPILE = "${TARGET_PREFIX}"
 
+# A machine.conf or local.conf can increase MACHINE_KERNEL_PR to force
+# rebuilds for kernel and external modules
+PR = "${MACHINE_KERNEL_PR}"
+
 export KERNEL_VERSION = "${@base_read_file('${STAGING_KERNEL_DIR}/kernel-abiversion')}"
 export KERNEL_SOURCE = "${@base_read_file('${STAGING_KERNEL_DIR}/kernel-source')}"
 KERNEL_OBJECT_SUFFIX = "${@[".o", ".ko"][base_read_file('${STAGING_KERNEL_DIR}/kernel-abiversion') > "2.6.0"]}"

diff --git a/conf/bitbake.conf b/conf/bitbake.conf
index a0d652a..136f01c 100644 (file)
--- a/conf/bitbake.conf
+++ b/conf/bitbake.conf
@@ -162,6 +162,10 @@ EXTENDPEVER = "${@['','${PE\x7d:'][bb.data.getVar('PE',d,1) > 0]}"
 EXTENDPV = "${EXTENDPEVER}${PV}-${PR}${DISTRO_PR}"
 P = "${PN}-${PV}"
 
+# Define a PR for kernels that machines can override so things like
+# modules get rebuilt
+MACHINE_KERNEL_PR ?= "r0"
+
 # Base package name
 # Automatically derives "foo" from "foo-native", "foo-cross" or "foo-initial"
 # otherwise it is the same as PN and P