Re: [OE-core] [PATCH 1/2] systemd: use serial-getty-generator on genericarm64

Re: [OE-core] [PATCH 1/2] systemd: use serial-getty-generator on genericarm64

[Mikko Rapeli]

Hi Ross,

Do you have some feedback to this? The kernel side issue
is now worked around/fixed but this boottime delay is still there.

Cheers,

-Mikko

On Thu, Feb 06, 2025 at 04:43:12PM +0200, Mikko Rapeli via lists.openembedded.org wrote:
> systemd-serialgetty recipe sets serial consoles based
> on SERIAL_CONSOLES build time variable. These fail to
> be detected on multiple devices including qemu and the
> resulting failures delay boot to systemd "running" state
> by one minute on an example aarch64 build machine and qemu.
> Serial console login works with both since udev will
> trigger agetty on correct devices. Using systemd side
> serial-getty-generator disables systemd-serialgetty.
> 
> qemu-system-aarch64 core-image-base boot time with
> systemd-serialgetty before this patch:
> 
> $ systemd-analyze
> Startup finished in 8.314s (firmware) + 9.805s (loader) + 14.338s (kernel) + 1min 34.392s (userspace) = 2min 6.851s
> multi-user.target reached after 1min 34.387s in userspace.
> 
> with this patch:
> 
> Startup finished in 8.312s (firmware) + 9.804s (loader) + 14.295s (kernel) + 29.808s (userspace) = 1min 2.220s
> multi-user.target reached after 29.802s in userspace.
> 
> Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
> ---
>  meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend | 3 +++
>  1 file changed, 3 insertions(+)
>  create mode 100644 meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend
> 
> diff --git a/meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend b/meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend
> new file mode 100644
> index 0000000000..f23852a351
> --- /dev/null
> +++ b/meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend
> @@ -0,0 +1,3 @@
> +# auto detection instead of build time configured via SERIAL_CONSOLES
> +# to support multiple devices
> +PACKAGECONFIG:append:genericarm64 = " serial-getty-generator"
> -- 
> 2.43.0
> 

> 
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