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Date: Wed, 22 Jun 2011 12:36:33 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-core] User space stack pre-faulting
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To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: Xenomai core <Xenomai-core@domain.hid>

On 06/22/2011 11:26 AM, Jan Kiszka wrote:
> Hi Gilles,
> 
> do you remember reasons for only pre-faulting the main thread's stack?
> The desire to avoid wasting resources by forcing all stacks into memory?
> 
> I've the requirement on my table to provide a generic solution of all
> shadow threads. I think this should be possible using pthread_getattr_np
> and walking the stack page-wise, but I may miss some pitfall.

Last time I checked, only the main thread stack was mapped on demand.
Other threads have mmaped stacks, which are made present by mlockall,
so, do not need faulting.

-- 
                                                                Gilles.