[OE-core] [PATCH] kernel: Use hardlinks for do_populate_sysroot for speed
Richard Purdie
richard.purdie at linuxfoundation.org
Fri Nov 8 15:18:00 UTC 2013
The kernel tree is large and doesn't need to be copied. Override
the default sysroot handling function to use a hardlink copying
function in python.
This commit also drops the copying of the /lib directory which
just contains the kernel modules. We never use those in the sysroot
so there is little point in carrying those around.
For linux-yocto this takes the do_populate_sysroot time 24s -> 14s.
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index 0b6360f..e793ccb 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -308,8 +308,8 @@ kernelscripts_sstate_postinst () {
fi
}
-sysroot_stage_all_append() {
- sysroot_stage_dir ${D}${KERNEL_SRC_PATH} ${SYSROOT_DESTDIR}${KERNEL_SRC_PATH}
+python sysroot_stage_all () {
+ oe.path.copyhardlinktree(d.expand("${D}${KERNEL_SRC_PATH}"), d.expand("${SYSROOT_DESTDIR}${KERNEL_SRC_PATH}"))
}
kernel_do_configure() {
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