RFC USB: HCD/EHCI: giveback of URB in tasklet context
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Cover letter [RFC PATCH 0/4] USB: HCD/EHCI: giveback of URB in tasklet context
Quoted 9 lines · Ming Lei
Quoted 6 lines · Alan Stern
Quoted 4 lines
Also the tasklet running in CPU0 can handle the work which should have been done by the same tasket scheduled in CPU1, so we can avoid busy-waitting in CPU1 which may be introduced by
tasklet_schedule()in CPU1.Or you could have a separate tasklet for each host controller.
Yes, but I will compare tasklet with interrupt threaded handler first.
Yes, please. I read through the thread and I really recommend that you get rid of the tasklet. tasklets are a complete disaster by design and we really should make efforts to get rid of the last users instead of trying to work around their semantical shortcomings.
Thanks,
tglx