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From: Jan Kiszka <jan.kiszka@siemens.com>
Message-ID: <57603B1C.6070301@siemens.com>
Date: Tue, 14 Jun 2016 19:13:00 +0200
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Subject: Re: [Xenomai] RTDM syscalls & switching
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To: Philippe Gerum <rpm@xenomai.org>, Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: Xenomai <xenomai@xenomai.org>

On 2016-06-14 17:23, Philippe Gerum wrote:
> Restoring the original behavior unconditionally would not be a fix but
> only a work-around for your own issue. Finding a better way acceptable
> to all parties is on my todo list for the upcoming 3.0.3.

An alternative design to a plain revert of the current->conforming
switch could be to enhance conforming to take the scheduling class into
account: SCHED_WEAK and SCHED_OTHER should have a NRT as conforming
domain while real-time scheduling classes obviously target RT. But I
didn't check yet what side effects that may have, nor if there could be
relevant impact on syscall performance (unlikely, though).

Jan