[Buildroot] [[PATCH RFC] 0/6] Add a kernel module loading mechanism
unixmania at gmail.com
unixmania at gmail.com
Fri Mar 20 23:35:41 UTC 2020
From: Carlos Santos <unixmania at gmail.com>
Currently there are two ways to load kernel modules in Buildroot:
- via systemd (systemd-modules-load.service)
- via OpenRC (/etc/init.d/modules)
The systemd mechanism uses configuration files, eacho one containing a
list of kernel module names to load, separated by newlines. Empty lines
and lines whose first non-whitespace character is # or ; are ignored.
Files are loaded in the following order:
/etc/modules-load.d/*.conf
/run/modules-load.d/*.conf
/usr/lib/modules-load.d/*.conf
OpenRC uses /etc/modules-load.d/*.conf, only, and does not ignore lines
beginning with ';'.
In order to provide a compatible mechanism for sysvinit/busybox init
systems, this series does the following:
Patch #1 adds a S02modules-load init script to kmod (which provides the
"modprobe" utility). It roughly mimics the systemd service.
Patch #2 adds the S02modules-load init script to Busybox. It's installed
only if kmod is not selected and modprobe is included in buildroot.
Patch #3 adds a target-finalize hook to linux to ensure that depmod -a
is executed after all packages install their modules, otherwise modprobe
fails at run-time, because the module is not included in
/lib/modules/<kernel-version>/modules.dep.
Patchs #4..6 modify packages dmraid, owfs and ti-sgx-km to use the
modules-load mechanism.
Package ti-gfx should be modified too, but I did not find a board
configuration to test it.
*** BLURB HERE ***
Carlos Santos (6):
package/kmod: add modules-load init script
package/busybox: add modules-load init script
linux: run depmod in a target-finalize hook
package/dmraid: use modules-load to load the kernel module
package/owfs: use modules-load to load the kernel module
package/ti-sgx-km: use modules-load to load the kernel module
linux/linux.mk | 11 ++++-
package/busybox/S02modules-load | 1 +
package/busybox/busybox.mk | 12 +++++
package/dmraid/S20dmraid | 3 --
package/dmraid/dmraid.mk | 12 +++++
package/kmod/S02modules-load | 85 +++++++++++++++++++++++++++++++++
package/kmod/kmod.mk | 5 ++
package/owfs/S60owfs | 2 -
package/owfs/owfs.mk | 11 +++++
package/ti-sgx-km/ti-sgx-km.mk | 10 ++++
package/ti-sgx-um/S80ti-sgx | 19 +-------
11 files changed, 148 insertions(+), 23 deletions(-)
create mode 120000 package/busybox/S02modules-load
create mode 100644 package/kmod/S02modules-load
--
2.18.2
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