bottom half handler choice

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Hi,

I want to implement bottom half handler for my driver. As per my
design it can sleep, so I have two choices:

1. separate kernel thread and managing its sleep-wakeup with waitqueue
2. Use single threaded workqueue

my question is,
Are they same performance/latency wise?
If not same what are the trade-offs?

thanks in advance.

Regards,
Kalpesh

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