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signal: Don't do schedule_sigaction when there is no action
task: don't set default signal in kernal thread
We think, the kernel thread should set default signal action, like SIGINT SIGSTOP...
Can you explain more about this PR? Does this PR fix a bug or just refactoring?
Suppose you are confused with this patch:
signal: Don't do schedule_sigaction when there is no action
This just a improvement.
If the nxsig_queue_action don't actually queue a action, then we don't need do up_schedule_sigaction any more.
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Summary
signal: Don't do schedule_sigaction when there is no action
task: don't set default signal in kernal thread
We think, the kernel thread should set default signal action, like SIGINT SIGSTOP...
Impact
signal on kernel thread
Testing
VELA