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Old 02-25-2011, 01:38 PM   #1
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Can I use softirq type call from the User Space to unblock a Kernel Thread or a Tasklet Schedule type process. Such a process has been placed in Linux via a Loadable Module.

As I understand ioctl system achieves similar thing (i.e from User Space run something in Kernel Space).
Old 02-25-2011, 02:40 PM   #2
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Only a thread can interrupt an interrupt; Therefore, to my knowledge, no. A softirq can only get the CPU time after an interrupt. Can someone else confirm this? It's been a while since I messed with anything hardcore like this.


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