Re: [RFC][-mm] Add an owner to the mm_struct (v4)

[KAMEZAWA Hiroyuki]

On Wed, 02 Apr 2008 08:55:34 +0530
Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> wrote:

> > 
> >> +	/*
> >> +	 * Search through everything else. We should not get
> >> +	 * here often
> >> +	 */
> >> +	do_each_thread(g, c) {
> >> +		if (c->mm == mm)
> >> +			goto assign_new_owner;
> >> +	} while_each_thread(g, c);
> > 
> > Doing above in synchronized manner seems too heavy.
> > When this happen ? or Can this be done in lazy "on-demand" manner ?
> > 
> 
> Do you mean under task_lock()?
> 
No, scanning itself. 
How rarely this scan happens under a server which has 10000- threads ?

Thanks,
-Kame

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