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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2022/06/25 01:00:33 UTC

[GitHub] [incubator-nuttx] XinStellaris commented on pull request #6512: driver/syslog:sched lock in syslog to prevent garbled print from multi-thread

XinStellaris commented on PR #6512:
URL: https://github.com/apache/incubator-nuttx/pull/6512#issuecomment-1166159209

   > 
   
   Thanks for your review. Yes this will have impact on scheduler and needs to be dealt with carefully.
   But I am not sure under which case can this make the system not real-time. Sched_lock will not disable interrupts, though some work in hpwork will be delayed, they will be done after the print is finished. Maybe the delay of hpwork is what you are talking about? 
   In RR schedule, this pr surely will bring in some delay for higher priority task, but the delay can be predicted from uart baud-rate and print length.
   
   Am I understanding the system and real-time correctly?


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