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Message-ID: <20090205151841.GF6915@linux.vnet.ibm.com>
Date:	Thu, 5 Feb 2009 07:18:41 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Cc:	ltt-dev@...ts.casi.polymtl.ca, linux-kernel@...r.kernel.org,
	"Theodore Ts'o" <tytso@....edu>,
	Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: LTTng 0.89 for Linux 2.6.29-rc3

On Thu, Feb 05, 2009 at 10:02:42AM -0500, Mathieu Desnoyers wrote:
> * Paul E. McKenney (paulmck@...ux.vnet.ibm.com) wrote:
> > On Fri, Jan 30, 2009 at 03:07:57PM -0500, Mathieu Desnoyers wrote:
> > > Hi,
> > > 
> > > I just ported LTTng to the 2.6.29-rc3 kernel. It includes the following
> > > changes :
> > > 
> > > - Tree RCU instrumentation
> > > - Updated ext4 and jbd2 instrumentation
> > > 
> > > Please feel free to try it and report any success/problem you may have.
> > > Note that cross-build has been slightly less tested this time because
> > > I'll have to upgrade many of my compilers to a version compatible with
> > > kernel 2.6.29-rc.
> > > 
> > > It also includes the recently added kprobes support through a simple
> > > 
> > > echo symbol_name > /mnt/debugfs/ltt/kprobes/enable
> > > 
> > > It's available at the new LTTng website :
> > > 
> > > http://www.lttng.org/
> > 
> > Hello, Matheiu,
> > 
> > When I try to apply this to v2.6.29-rc3, I get the following:
> > 
> > 	can't find file to patch at input line 61
> > 	Perhaps you used the wrong -p or --strip option?
> > 	The text leading up to this was:
> > 	--------------------------
> > 	|get_ltt_root() is necessary for ltt-trace-control to create subdirs in
> > 	ltt's
> > 	|debugfs dir.
> > 	|
> > 	|From: Zhao Lei <zhaolei@...fujitsu.com>
> > 	|Signed-off-by: Zhao Lei <zhaolei@...fujitsu.com>
> > 	|Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
> > 	|---
> > 	| include/linux/ltt-core.h |    8 ++++++++
> > 	| ltt/ltt-core.c           |   14 ++++++++++++++
> > 	| ltt/ltt-relay.c          |    8 +-------
> > 	| 3 files changed, 23 insertions(+), 7 deletions(-)
> > 	|
> > 	|Index: linux-2.6-lttng/include/linux/ltt-core.h
> > 	|===================================================================
> > 	|--- linux-2.6-lttng.orig/include/linux/ltt-core.h      2009-01-15
> > 	15:55:18.000000000 -0500
> > 	|+++ linux-2.6-lttng/include/linux/ltt-core.h   2009-01-15
> > 	15:55:24.000000000 -0500
> > 
> > Help?
> > 
> 
> Hi Paul,
> 
> I must admit I'm a bit puzzled. I've tried to quilt push -a both 
> LTTng 0.89 and LTTng 0.92 taken from the website and they both apply
> correctly on 2.6.29-rc3. When I quilt pop -a, neither of those 3 files
> (include/linux/ltt-core.h, ltt/ltt-core.c, ltt/ltt-relay.c) are stucked
> in my tree.
> 
> I've used files from :
> 
> http://www.lttng.org/files/lttng/patch-2.6.29-rc3-lttng-0.92.tar.bz2
> 
> Which tarballs are you using exactly ?

That is indeed the one that I am using.

> I guess you need to apply them to your existing tree, so pointing you to
> git.kernel.org lttng tree won't help much here.

I am attempting to apply to v2.6.29-rc3, which is commit
18e352e4a73465349711a9324767e1b2453383e2 in the linux-2.6 git tree.

Later on, I might well want to apply on top of some other stuff, but
figured I should try it straight first.  ;-)

							Thanx, Paul

> Mathieu
> 
> > 							Thanx, Paul
> 
> -- 
> Mathieu Desnoyers
> OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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