SMP: fix repeat entry oneshot_tick_start#9986
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yangguangcai01 wants to merge 1 commit intoapache:masterfrom
Closed
SMP: fix repeat entry oneshot_tick_start#9986yangguangcai01 wants to merge 1 commit intoapache:masterfrom
yangguangcai01 wants to merge 1 commit intoapache:masterfrom
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Situation:
Assume we have 2 cpus.
CPU0 CPU1
1. -> nxsched_alarm_expiration
2. -> nxshced_timer_start
3. -> ONESHOT_TICK_START
4. now timer in IRQ
5. in thread
6. -> wd_start
7. -> nxshced_timer_start
8. -> ONESHOT_TICK_START
9. reentry timer crash
Fix:
Enter critical section before nxsched_timer_start
Signed-off-by: yangguangcai <yangguangcai@xiaomi.com>
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Situation:
Assume we have 2 cpus.
CPU0 CPU1
5. in thread
6. -> wd_start
7. -> nxshced_timer_start
8. -> ONESHOT_TICK_START
9. reentry timer crash
Fix:
Enter critical section before nxsched_timer_start