From: Philippe Gerum <rpm@xenomai.org>
To: Jeroen Van den Keybus <jeroen.vandenkeybus@gmail.com>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] Slow execution of RT task
Date: Thu, 24 Apr 2014 14:17:13 +0200 [thread overview]
Message-ID: <535900C9.7@xenomai.org> (raw)
In-Reply-To: <CAPRPZsBOngBwdht7FsnaqVAJObuugr=TAGETcnF6ZKVajbPvgQ@mail.gmail.com>
On 04/24/2014 12:21 PM, Jeroen Van den Keybus wrote:
> Philippe,
>
>
> Disabling CONFIG_RCU_USER_QS ('General setup -> RCU Subsystem ->
> Consider userspace as in RCU extended quiescent state') at least
> avoids the warning.
>
> Further investigation shows that it is actually
> CONFIG_CONTEXT_TRACKING_FORCE ('General setup -> RCU Subsystem ->
> Force context tracking') that seems to cause the issue
> (CONFIG_RCU_USER_QS and CONFIG_CONTEXT_TRACKING still enabled in this
> case).
>
Ok, thanks for digging this. I'll switch back to investigating this
issue in the coming days. Gilles has detected a breakage of the
interrupt state on ARM which is caused by the context tracking feature,
there is a possibility that such issue also concerns other archs. I
still have to come up with a solution to this problem.
--
Philippe.
next prev parent reply other threads:[~2014-04-24 12:17 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-14 9:14 [Xenomai] Slow execution of RT task Jeroen Van den Keybus
2014-04-14 12:28 ` Philippe Gerum
2014-04-14 12:45 ` Jeroen Van den Keybus
2014-04-14 12:53 ` Philippe Gerum
2014-04-15 14:40 ` Philippe Gerum
2014-04-16 9:43 ` Jeroen Van den Keybus
2014-04-16 14:23 ` Philippe Gerum
2014-04-16 20:42 ` Jeroen Van den Keybus
2014-04-24 10:21 ` Jeroen Van den Keybus
2014-04-24 12:17 ` Philippe Gerum [this message]
2014-04-14 12:44 ` Philippe Gerum
2014-04-14 12:47 ` Jeroen Van den Keybus
2014-04-14 20:18 ` Jeroen Van den Keybus
2014-04-14 20:33 ` Gilles Chanteperdrix
2014-04-14 21:14 ` Jeroen Van den Keybus
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