Re: [RFC 0/6] uprobes: kill uprobes_srcu/uprobe_srcu_id

From: Oleg Nesterov
Date: Mon Apr 23 2012 - 17:26:43 EST

forgot to mention,

On 04/23, Oleg Nesterov wrote:
> Just it seems to me there are to many "details"
> we should discuss to make the filtering reasonable.

And so far we assumed that consumer->filter() is "stable" and never
changes its mind.

Perhaps this is fine, but I am not sure. May we need need some
interface to add/del the task. Probably not, but unregister + register
doesn't look very convenient and can miss a hit.

> Yes, and probably this makes sense for handler_chain(). Although otoh
> I do not really understand what this filter buys us at this point.

But if we change the rules so that ->filter() or ->handler() itself can
return the "please remove this bp from ->mm" then perhaps it makes more
sense for the filtering. Again, not sure.


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