Lttng on 2.6.12 arm

I have been working on getting lttng to work on 2.6.12 kernel and arm
machine.

Has anyone got lttng to work on 2.6.12? if so, can they please show the way.
I am currently debugging the app (after all the headbanging with the patches
to get the kernel compile).

 When i try to run

lttctl -n trace -d -l /mnt/relayfs/ltt -t /tmp/trace

I get Create Trace error:Failed to send netlinkk message : illegal seek
('sendto' gives it as connection refused (used perror)).

I am able to mount relayfs (i get ltt folder inside /mnt/relayfs)



I am summarising whatever i have done here:

Note:
I have been hunting and trying to find a proper patch. For example. When I
apply patch : http://ltt.polymtl.ca/lttng/patch-2.6.12-rc4-mm2-lttng-0.4.bz2.
I get #include<ltt-events.h>
 in arch/arm/kernel/process.c irq.c etc. And this header file is not there
in the patch. Hence i started to gather patches that match well.

I hunted for patches that match well with each other. I got arm related
patch for 2.6.13* from
http://www.rpsys.net/openzaurus/patches/archive/ltt-arm-r0.patch (This patch
also solved the ltt-events.h problem)

1) i apply relayfs.patch.

2) Then i apply two patches that fix the backing_dev inode.c problem
and oversized events problem in relay.c (relay_switch_subbuf)
http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.12-rc2/2.6.12-rc2-mm1/broken-out/relayfs-backing_dev-fix.patch
.
http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.12-rc2/2.6.12-rc2-mm1/broken-out/relayfs-properly-handle-oversized-events.patch

3) Then i apply the
http://ltt.polymtl.ca/lttng/patch-2.6.12-rc4-mm2-lttng-0.4.bz2 patch.

4) Then the arm patch
http://www.rpsys.net/openzaurus/patches/archive/ltt-arm-r0.patch.

There is no cmpxchg after this, so I used the recent kernels to get the
atomic_cmpxchg() function. I read in teh mailing list that atomic_cmpxchg()
is enough (other than cmpxchg) for arm.

It would be great if i can get a quick reply.

Thanks
karthik

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