diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Kconfig | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/Kconfig b/src/Kconfig index d278169da0..ee1ecbd126 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -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" |