In multicore system, We add a busywait flag to synchronize the startup of other cores. #16928
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@wangchdo could you review whether this patch could fix your problem? |
xiaoxiang781216
previously approved these changes
Aug 28, 2025
acassis
reviewed
Aug 28, 2025
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@hujun260 please use the title of this PR to explain the Kconfig symbol help :-). Also the PR title should start with the feature/subsystem info, i.e.: sched/smp: use busywait flag to sync cores during the boot |
On a system with multiple CPU cores, when the system is powered on, multiple cores may start running simultaneously. In this case, software is required to handle the startup logic for multi-core synchronization. One approach is to use global variables. however, the global variable region may not have been initialized yet. In such scenarios, we can use a busywait flag to implement the synchronization strategy. Signed-off-by: hujun5 <hujun5@xiaomi.com>
On a system with multiple CPU cores, when the system is powered on, multiple cores may start running simultaneously. In this case, software is required to handle the startup logic for multi-core synchronization. One approach is to use global variables. however, the global variable region may not have been initialized yet. In such scenarios, we can use a busywait flag to implement the synchronization strategy. Signed-off-by: hujun5 <hujun5@xiaomi.com>
xiaoxiang781216
approved these changes
Aug 29, 2025
jerpelea
approved these changes
Sep 1, 2025
xiaoxiang781216
approved these changes
Sep 1, 2025
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Summary
In multicore system, We add a busywait flag to synchronize the startup of other cores.
Impact
NULL
Testing
ostest