hujun260 commented on code in PR #15136:
URL: https://github.com/apache/nuttx/pull/15136#discussion_r1880217393


##########
sched/clock/clock_timekeeping.c:
##########
@@ -72,7 +73,7 @@ static int clock_get_current_time(FAR struct timespec *ts,
   time_t sec;
   int ret;
 
-  flags = enter_critical_section();
+  flags = spin_lock_irqsave(&g_clock_lock);
 
   ret = up_timer_gettick(&counter);

Review Comment:
   I believe there is no clear specification that requires up_timer_gettick to 
be called within a critical_section. Currently, there are numerous calls to 
up_timer_gettick that are not within a critical section. For example, 
clock_systime_ticks calls up_timer_gettick, but clock_systime_ticks itself is 
not within a critical_section in many places.



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