Linus Torvalds wrote:
On Mon, 9 Apr 2007, Andrew Morton wrote:
10 ? S< 0:00 [khelper]
That one's needed to parent the call_usermodehelper() apps. I don't think
it does anything else. We used to use keventd for this but that had some
problem whcih I forget.
I think it was one of a long series of deadlocks.
Using a "keventd" for many different things sounds clever and nice, but
then sucks horribly when one event triggers another event, and they depend
on each other. Solution: use independent threads for the events.
Nod. That's the key problem with keventd. Independent things must wait
on each other.
That's why I feel thread creation -- cheap under Linux -- is quite
appropriate for many of these situations.
Jeff
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