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Use full preemptible kernel in Home Assistant OS (#2721)

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Enable fully preemptible kernel (low-latency desktop) configuration for
Home Assistant. Home Assistant can be considered as a soft real-time
system, where a lower latency is preferred over throughput.

A few tests using the rt_test development add-on didn't show measurable
improvements, but this could be due to rather synthetic test.

Currently some platform use voluntary preemptible kernel, and some fully
preemptible. So besides improving latency, this also aims to synchronize
the settings across all platforms.

Also make sure that debugging is not enable as it can have high runtime
overhead according to Kconfig.
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Stefan Agner 2023-09-01 10:13:02 +02:00 committed by GitHub
parent 2756709f4a
commit d2006e9b72
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buildroot-external/kernel/hassos.config
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@ -2,6 +2,9 @@ CONFIG_KERNEL_LZ4=y
CONFIG_CMDLINE=""
CONFIG_PANIC_TIMEOUT=5
CONFIG_PREEMPT=Y
# CONFIG_DEBUG_PREEMPT is not set
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y