Subject: Re: [RFC,PATCH 0/14] utrace/ptrace
From: Peter Zijlstra <peterz@infradead.org>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>, Oleg Nesterov <oleg@redhat.com>,
       linux-kernel@vger.kernel.org, "Frank Ch. Eigler" <fche@redhat.com>,
       utrace-devel@redhat.com, Alexey Dobriyan <adobriyan@gmail.com>,
       Jim Keniston <jkenisto@us.ibm.com>
In-Reply-To: <20091126070747.GA30231@linux.vnet.ibm.com>
References: <20091124200127.GA5751@redhat.com>
	 <20091125214818.GA4916@infradead.org>
	 <20091126070747.GA30231@linux.vnet.ibm.com>
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Date: Thu, 26 Nov 2009 13:55:52 +0100
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On Thu, 2009-11-26 at 12:37 +0530, Srikar Dronamraju wrote:
> Hi Christoph, 
> 
> > 
> > The other thing is that this patchset really doesn't quite justify
> > utrace.  It's growing a lot more code without actually growing any
> > useful functionality.  What about all those other utrace killer
> > features that have been promised for a long time?
> > 
> 
> We are working on in-kernel gdbstub which was one of the features that
> you had asked for. gdbstub does pass unit tests; but we are looking at
> some way to hack the GDB testsuite to run its regression tests. Once we
> are able to run the GDB testsuite and utrace is part of some upstream
> tree, we plan to post these patches to LKML for comments. gdbstub uses
> utrace and uprobes underneath. Uprobes was rewritten to remove issues
> that LKML developers had opposed. Uprobes also has its own ftrace plugin
> to use uprobes.
> 
> Currently in-kernel gdbstub is hosted by Frank Ch. Eigler over here:
> git://web.elastic.org/~fche/utrace-ext.git
> branch name utrace-gdbstub-uprobes

If its anywhere near functioning it would have made sense to send it out
as an RFC patch-set right along with the utrace one.
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