diff mbox series

[kirkstone,14/15] kernel: improve initramfs bundle processing time

Message ID f75e7bbe7cd463c3e8c95b19678fcc2a925dc7b8.1683671424.git.steve@sakoman.com
State Accepted, archived
Commit a2a889b760785474dbc04e3ec11521f6da90161d
Headers show
Series [kirkstone,01/15] git: fix CVE-2023-29007 | expand

Commit Message

Steve Sakoman May 9, 2023, 10:32 p.m. UTC 
From: Bruce Ashfield <bruce.ashfield@gmail.com>

This is a partial fix for bugzilla 15059 [https://bugzilla.yoctoproject.org/show_bug.cgi?id=15059]

It has been noted by several people that when an initramfs is bundled:

  - a lot of the kernel is rebuilt
  - it takes a really long time

When looking at the logs, the second kernel compilation (that performs
the bundle) is not using the parallel make settings, and builds with
-j1.

We are already explicitly passing PARALLEL_MAKE when building kernel
modules, and by extending that explicit use to the main kernel
compilation, we ensure that we always get a parallel build.

Build times chnaged from more than 30 minutes for the bundle, to
3 minutes in local testing.

The question of whether or not too much is rebuilding during the
bundle step is still an open question, but with this tweak, at least
the build time is back in the realm of acceptable.

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
(cherry picked from commit 88fd394ecf0f2174b792075d409d87046896426b)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
---
 meta/classes/kernel.bbclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index b315737fd2..d45fa25c32 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -377,7 +377,7 @@  kernel_do_compile() {
 		use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio
 	fi
 	for typeformake in ${KERNEL_IMAGETYPE_FOR_MAKE} ; do
-		oe_runmake ${typeformake} ${KERNEL_EXTRA_ARGS} $use_alternate_initrd
+		oe_runmake ${PARALLEL_MAKE} ${typeformake} ${KERNEL_EXTRA_ARGS} $use_alternate_initrd
 	done
 }