Messages in this thread | | | Date | Fri, 07 Apr 2006 23:14:27 +0800 | From | Yi Yang <> | Subject | Re: [2.6.16 PATCH] Filessytem Events Reporter V2 |
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Evgeniy Polyakov 写道: > On Fri, Apr 07, 2006 at 06:03:04PM +0800, Yi Yang (yang.y.yi@gmail.com) wrote: > >>>> Can you explain why there is such a big difference between >>>> netlink_unicast and netlink_broadcast? >>>> >>>> >>> Netlink broadcast clones skbs, while unicasting requires the whole new >>> one. >>> >>> >> No, I also use clone to send skb, so they should have the same overhead. >> > > I missed that. > After rereading fsevent_send_to_process() I do not see how original skb > is freed though. > I'm considering how to free it, because cloned skbs share data with original skb, so this case is special, I try to clarify the logic of kfree_skb. > >>>>> Btw, you need some rebalancing of the per-cpu queues, probably in >>>>> keventd, since CPUs can go offline and your messages will stuck foreve >>>>> there. >>>>> >>>>> >>>>> >>>> Does keventd not do it? if so, keventd should be modified. >>>> >>>> >>> How does keventd know about your own structures? >>> You have an per-cpu object, but your keventd function gets object >>> >> >from running cpu, not from any other cpus. >> > >
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