Messages in this thread | | | Subject | Re: Kernel WARNING: at net/core/dev.c:1330 __netif_schedule+0x2c/0x98() | From | Miklos Szeredi <> | Date | Thu, 24 Jul 2008 12:55:58 +0200 |
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On Thu, 24 Jul 2008, Nick Piggin wrote: > Hey, something kind of cool (and OT) I've just thought of that we can > do with ticket locks is to take tickets for 2 (or 64K) nested locks, > and then wait for them both (all), so the cost is N*lock + longest spin, > rather than N*lock + N*avg spin.
Isn't this deadlocky?
E.g. one task takes ticket x=1, then other task comes in and takes x=2 and y=1, then first task takes y=2. Then neither can actually complete both locks.
Miklos
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