linux-kernel - Re: [ltt-dev] LTTng 0.74 for Linux 2.6.28 (ext4 tracepoints) (fixed in LTTng 0.78)

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Message-ID: <20090115032014.GA10229@Krystal>
Date:	Wed, 14 Jan 2009 22:20:14 -0500
From:	Mathieu Desnoyers <compudj@...stal.dyndns.org>
To:	Theodore Tso <tytso@....edu>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	ltt-dev@...ts.casi.polymtl.ca, linux-kernel@...r.kernel.org
Subject: Re: [ltt-dev] LTTng 0.74 for Linux 2.6.28 (ext4 tracepoints)
	(fixed in LTTng 0.78)

* Mathieu Desnoyers (compudj@...stal.dyndns.org) wrote:
> * Theodore Tso (tytso@....edu) wrote:
> > On Tue, Jan 13, 2009 at 05:58:27PM -0500, Mathieu Desnoyers wrote:
> > > > 
> > > > -ECANTBUILD
> > > > 
> > > Thanks for the report. This should be fixed in LTTng 0.78 now.
> > 
> > Out of curiosity, do you maintain a branch of LTTNG versus any of the
> > -rc kernels, or do you only track the stable kernels?  I tried pulling
> > LTTNG 0.78 against the most recent Linus mainline and got a whole pile
> > of conflicts.
> > 
> > I then tried building LTTng 0.78 and got build failures:
> > 
> >   CC      arch/x86/kernel/init_task.o
> > distcc[27501] ERROR: compile /var/cache/ccache/init_task.tmp.closure.27497.i on localhost failed
> > /usr/projects/linux/ext4/arch/x86/kernel/init_task.c:35: error: unknown field ‘user_markers_mutex’ specified in initializer
> > /usr/projects/linux/ext4/arch/x86/kernel/init_task.c:35: warning: braces around scalar initializer
> > /usr/projects/linux/ext4/arch/x86/kernel/init_task.c:35: warning: (near initialization for ‘init_task.latency_record_count’)
> > /usr/projects/linux/ext4/arch/x86/kernel/init_task.c:35: error: field name not in record or union initializer
> > /usr/projects/linux/ext4/arch/x86/kernel/init_task.c:35: error: (near initialization for ‘init_task.latency_record_count’)
> > 
> > Looks like CONFIG_MARKERS_USERSPAC is busted....
> > 
> 
> Hi Ted,
> 
> I'm currently integrating Lai's work to the 2.6.28 lttng branch (ascii
> output !) :) and the next step will be to move to 2.6.29-rc1. I'll keep
> you posted. Note that you can just leave the 
> 
> #New revamped userspace markers
> 
> markers-userspace.patch
> markers-userspace-x86.patch
> markers-userspace-x86_64.patch
> sparc64-support-userspace-tracing.patch
> 
> Out of the patchset and it should not hurt the kernel tracing part at
> all. Note that these 4 patches are planned to be heavily reworked before
> lkml submission.
>

Actually, the x86_32 2.6.28 build was broken because of a bad patch
hunk which caused this problem. I fixed it in lttng 0.81. The port to
2.6.29-rc1 should some in a few days.

Thanks for the report,

Mathieu

> Mathieu
> 
> > 						- Ted
> > 
> 
> -- 
> Mathieu Desnoyers
> OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
> 
> _______________________________________________
> ltt-dev mailing list
> ltt-dev@...ts.casi.polymtl.ca
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-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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