Hi guys,
I asked myself - when exactly are the bottom half's handlers executed?
Bottom halves are just globally locked tasklets so the question is really
"when are the tasklets executed?". So, I looked at schedule()'s label
handle_softirq which looked suspiciously similar to the label
handle_softirq in interrupt/syscall return path in entry.S - so I said
"behold, that is it!". Is this correct?
If this is correct, then why do we need to call do_softirq() in
schedule() at all - isn't it enough to just call it on every
interrupt/syscall return?
Regards,
Tigran
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