Re: Testers needed for LTTng 0.6.0pre8

Hi Christopher,

Thanks for testing it! I will fix the printk bug in my release and try to send
it upstream eventually.

You should get trace files in /tmp/trace.. so something is wrong. You probably
need to load ltt-tracer.ko and ltt-relay.ko. If it doesn't work, I will need
those outputs :

grep LTT .config
lsmod
dmesg (just after a trace is taken)
What is the last version of the git tree you pulled out ?

Mathieu

* Christopher Yeoh ([email protected]) wrote:
> At 2006/9/28 14:46-0400  Mathieu Desnoyers writes:
> > Hi,
> > 
> > 0.6.0pre9 fixes the powerpc optimization. There is a weird difference between
> > x86 and powerpc for the asm operands.
> > 
> > x86 is weird, not powerpc. :)
> 
> :-)
> 
> Thanks! I can now build and boot it on a power 5 machine. For
> anyone else interested you do need to apply a small patch:
> 
> --- a/arch/powerpc/kernel/prom.c
> +++ b/arch/powerpc/kernel/prom.c
> @@ -922,8 +922,6 @@ #endif
>         DBG(" <- early_init_devtree()\n");
>  }
> 
> -#undef printk
> -
>  int
>  prom_n_addr_cells(struct device_node* np)
>  {
> 
> but this is a mainline bug.
> 
> I did do quick test run. Maybe I'm driving it wrong, but I'm not
> getting much output in /tmp/trace
> 
> cyeoh@Diego2:~$ ls -la /tmp/trace/
> total 12
> drwxr-xr-x 3 root root 4096 Sep 29 14:50 .
> drwxrwxrwt 3 root root 4096 Sep 29 15:05 ..
> drwxr-xr-x 2 root root 4096 Sep 29 14:50 eventdefs
> 
> I do get dmesg output indicating it is doing something:
> 
> ltt-control ltt_control_input
> ltt_control : trace trace
> Creating trace trace
> ltt-control ltt_control_input
> ltt_control : trace trace
> Start tracing trace
> Dumping facility core
> Dumping facility socket
> Dumping facility kernel
> Dumping facility fs_data
> Dumping facility kernel_arch
> Dumping facility network
> Dumping facility ipc
> Dumping facility statedump
> Dumping facility timer
> Dumping facility memory
> Dumping facility process
> Dumping facility fs
> Dumping facility network_ip_interface
> ltt_statedump_start
> do_ltt_statedump
> trace_statedump_statedump_end
> ltt-control ltt_control_input
> ltt_control : trace trace
> Stop tracing trace
> ltt-control ltt_control_input
> ltt_control : trace trace
> Destroying trace trace
> 
> but nothing else appears in /tmp/trace
> 
> Chris
> -- 
> [email protected]
> IBM OzLabs Linux Development Group, ADL
> Canberra, Australia
> 
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