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Date: Thu, 7 Feb 2008 13:13:43 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Jason Wessel <jason.wessel@windriver.com>
Cc: Jan Kiszka <jan.kiszka@web.de>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       kgdb-bugreport@lists.sourceforge.net,
       Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH 1/3] KGDB: Major refactoring
Message-ID: <20080207121343.GA5697@elte.hu>
References: <47A8F275.9090901@web.de> <20080207001336.GA22986@elte.hu> <47AA5165.4070201@windriver.com>
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* Jason Wessel <jason.wessel@windriver.com> wrote:

> > Could you try something else too perhaps, which would be way useful 
> > for me: to add a sysctl flag (or something like that) to change 
> > kgdboc to accept a Ctrl-C and break into kgdb mode? [this means a 
> > simple Ctrl-C on a kgdboc line would break into KGDB as well - but 
> > that would be an acceptable price.] Right now kgdboc just hangs when 
> > gdb attaches - i have to generate a SysRq sequence via a terminal 
> > emulator to break it into KGDB mode.
> 
> FYI, even if you were to hack in a control-c vs sysrq, gdb will still 
> hang on connect because it does not issue a break of any kind when it 
> connects.  It assumes the connection is in a usable state.

sigh. That's quite a usability barrier IMHO.

> The proxy spliter automatically sends the break (or in the current 
> case the sysrq g)

any link to the proxy splitter? Googling for "kgdb proxy splitter" did 
not yield anything obviously on-topic.

	Ingo