> For the ret to userspace case it could decrease a bit the bh latency
> but it seems not a big issue, as right now a ret from syscall will act
> like while returning from an irq after the bottom half path.
bh latency is important in some cases, and often we do not return to
userspace for millisecs (tens of millisecs in other cases). This might
even explain some of the TCP oddities.
-- mingo
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