From: Jan Kiszka <jan.kiszka@domain.hid>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai-core <xenomai@xenomai.org>,
Tschaeche IT-Services <services@domain.hid>
Subject: Re: [Xenomai-core] [RFC] Break out of endless user space loops
Date: Thu, 03 Jun 2010 08:55:56 +0200 [thread overview]
Message-ID: <4C0751FC.8050009@domain.hid> (raw)
In-Reply-To: <4C06953D.90003@domain.hid>
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Gilles Chanteperdrix wrote:
> Jan Kiszka wrote:
>> Hi all,
>>
>> here is the first apparently working prototype for getting hold of
>> endless user space loops in RT threads. A simple test case of mine now
>> receive a SIGDEBUG even if it does "while (1);".
>>
>> The design follows Gilles' suggestion to force a SEGV on victim thread
>> but restore the patched PC before migrating the thread after this fault.
>> The only drawback of this approach: We need to keep track of the
>> preempted register set at I-pipe level. I basically replicated what
>> Linux does these days as well and exported it as ipipe_get_irq_regs()
>> (the second patch).
>
> You already have the regs in xnarch_fault_info.
>
We only pass this around for exceptions.
Jan
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next prev parent reply other threads:[~2010-06-03 6:55 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-02 17:19 [Xenomai-core] [RFC] Break out of endless user space loops Jan Kiszka
2010-06-02 17:30 ` Gilles Chanteperdrix
2010-06-03 6:55 ` Jan Kiszka [this message]
2010-06-03 8:27 ` Philippe Gerum
2010-06-03 8:47 ` Jan Kiszka
2010-06-03 9:56 ` Philippe Gerum
2010-06-03 10:18 ` Jan Kiszka
2010-06-03 10:47 ` Philippe Gerum
2010-06-03 10:52 ` Philippe Gerum
2010-06-03 10:59 ` Jan Kiszka
2010-06-02 20:58 ` Philippe Gerum
2010-06-03 6:56 ` Jan Kiszka
2010-06-09 10:41 ` [Xenomai-core] [PATCH] Mayday support (was: Re: [RFC] Break out of endless user space loops) Philippe Gerum
2010-06-09 13:38 ` [Xenomai-help] " Tschaeche IT-Services
2010-06-09 14:01 ` Philippe Gerum
2010-06-09 18:11 ` Tschaeche IT-Services
2010-06-18 23:11 ` [Xenomai-core] " Philippe Gerum
2010-06-24 9:22 ` [Xenomai-help] " Tschaeche IT-Services
2010-06-24 9:34 ` [Xenomai-core] [PATCH] Mayday support Jan Kiszka
2010-06-24 10:28 ` [Xenomai-core] [PATCH] Mayday support (was: Re: [RFC] Break out of endless user space loops) Philippe Gerum
2010-06-24 12:05 ` [Xenomai-core] [PATCH] Mayday support Jan Kiszka
2010-06-27 16:01 ` Philippe Gerum
2010-06-28 14:06 ` Jan Kiszka
2010-06-28 14:12 ` Philippe Gerum
2010-07-06 15:44 ` Philippe Gerum
2010-07-06 15:54 ` Jan Kiszka
2010-07-06 16:41 ` Philippe Gerum
2010-07-06 17:10 ` Jan Kiszka
2010-08-20 12:32 ` Jan Kiszka
2010-08-20 14:00 ` Philippe Gerum
2010-08-20 14:06 ` Jan Kiszka
2010-08-20 14:20 ` Philippe Gerum
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