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docs(core): Add help description for RT_USING_THREADSAFE_PRINTF #11233

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docs(core): Add help description for RT_USING_THREADSAFE_PRINTF #11233

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9 changes: 8 additions & 1 deletion src/Kconfig
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Expand Up @@ -413,8 +413,15 @@ config RT_USING_INTERRUPT_INFO
Add name and counter information for interrupt trace.

config RT_USING_THREADSAFE_PRINTF
bool "Enable thread safe kernel print service"
bool "Enable thread-safe kernel print service (not recommended for hard real-time)"
default y if RT_USING_SMP && RT_USING_SMART
help
Note : this option may increase worst-case
interrupt/scheduling latency, because console output is protected in
a non-preemptible section and device write can be relatively slow.
If strict real-time response is required, avoid frequent synchronous
kprintf output in time-critical paths, or prefer asynchronous logging
(for example ULog async mode).

config RT_USING_CONSOLE
bool "Using console for rt_kprintf"
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