GUIDINGLI opened a new pull request #4413:
URL: https://github.com/apache/incubator-nuttx/pull/4413
## Summary
sched/wdog: fix switch_context caused error in wd_start()
Thead A: Thread B:
wd_start(wdogX)
wd_cancel
nxsched_cancel_timer --> wd_start(wdogX)
wd_cancel
add wdogX to g_wdactivelist
<--
add wdogX to g_wdactivelist
then, you will find wdogX add twice.
sched/wdog: move SMP enter_critical_section to sched_timerexpiration.c
## Impact
when CONFIG_SCHED_TICKLESS=y
wd_expiration execute in BOTH interrupt context or critical_section
=>
wd_expiration execute in ONLY interrupt context
## Testing
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