zephyr/subsys/shell/Kconfig.template.shell_log_queue_size
Krzysztof Chruscinski 08f0d93cbb shell: Improve handling of log messages
If burst of log messages was passed to the shell log
backend, it was likely that messages were lost because
shell had no means to control arrivals of log messages.

Added log message enqueueing timeout to the shell instance
to allow blocking logger thread if short-term arrival rate
exceeded shell capabilities.

Added kconfig option for setting log message queue size
and timeout in RTT and UART instances. Added section in
shell documentation which explains interaction between
the logger and shell instance acting as a logger backend.

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
2018-12-19 14:37:00 +01:00

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config $(module)_LOG_MESSAGE_QUEUE_SIZE
int "Log message queue size"
default $(default-size)
help
Amount of messages that can enqueued in order to be processed by shell
thread. Too small queue may lead to logger thread being blocked
(see $(module)_LOG_MESSAGE_QUEUE_TIMEOUT). Too big queue on relatively
slow shell transport may lead to situation where logs are dropped
because all log messages are enqueued.