From: Jan Kiszka <jan.kiszka@web.de>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: Xenomai <xenomai@xenomai.org>
Subject: Re: [Xenomai] I-pipe on ARM platform.
Date: Sat, 06 Apr 2013 20:32:39 +0200 [thread overview]
Message-ID: <51606A47.8000606@web.de> (raw)
In-Reply-To: <51606911.7050205@xenomai.org>
On 2013-04-06 20:27, Gilles Chanteperdrix wrote:
>> And it has to map directly to might_fault
>> in case CONFIG_IPIPE_DEBUG_CONTEXT is disabled (thus zero overhead).
>
> That would defeat the purpose of the patch. might_fault can not be
> called over non root domains.
True. But we should avoid leaving the costly irq-disable/enable and
domain checks in production code behind when might_fault actually
resolves to a nop. That should be the case for
!CONFIG_DEBUG_ATOMIC_SLEEP && !CONFIG_PROVE_LOCKING.
Jan
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next prev parent reply other threads:[~2013-04-06 18:32 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-04 20:58 [Xenomai] I-pipe on ARM platform Gilles Chanteperdrix
2013-04-06 9:48 ` Jan Kiszka
2013-04-06 13:24 ` Philippe Gerum
2013-04-06 18:27 ` Gilles Chanteperdrix
2013-04-06 18:32 ` Jan Kiszka [this message]
2013-04-07 15:10 ` Gilles Chanteperdrix
2013-04-07 15:13 ` Gilles Chanteperdrix
2013-04-07 15:14 ` Jan Kiszka
2013-04-07 15:26 ` Gilles Chanteperdrix
2013-04-07 16:55 ` Gilles Chanteperdrix
2013-04-07 18:47 ` Gilles Chanteperdrix
2013-04-07 19:01 ` Jan Kiszka
2013-04-07 19:16 ` Gilles Chanteperdrix
2013-04-08 21:02 ` Gilles Chanteperdrix
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