au1550 oprofile

au1550 oprofile

[Steve Lazaridis]

Has anyone successfully ran oprofile on an au1550?
If so, was it in BigEndian mode?

Are there any known issues with oprofile on au1xxx platforms?


Here's some information on what I'm currently running.
Oprofile version:  oprofile 0.9.2cvs
Oprofile kernel:   driver: 2.6.15
Kernel version:    2.6.13rc7 ~ from linux-mips
Endianess:  	   Big

I'm running in __timer mode__, I can't use performance counters.

What I did was take the latest version of the oprofile kernel driver 
from 2.6.15 and backport all the changes.  I also merged in the latest 
changes for the arch/mips/oprofile stuff too.

That finally got the driver to compile and load on the target.

I then attempted the following:
opcontrol --no-vmlinux
opcontrol --start
/usr/bin/app_that_Uses_up_CPU
opcontrol --shutdown

opcontrol --dump   <--- returns nothing

opreport -l 	   <--- returns the following:
opreport error: No sample file found: try running opcontrol --dump
or specify a session containing sample files


I then realized that the timer_interupt handler wasn't being called.  I 
fixed that, so now I can actually see the 
/dev/oprofile/stats/cpu0/sample_received  being increased.
__but__ I still have no output from the opreport or opcontrol --dump


At this point I'm asking for help, any tips or hints are much appreciated.


Cheers,
Steve

vsftp -- ping ( two problems)

[Gowri Satish Adimulam]

Hi ,

I have two problems 

a. i have added icmp.c to the kernel 2.6.14 (mips).

  i have connected a cross cable to pc , IAM ABLE TO PING THE MIPS
target board from pc , but in target even self ping is not responding.


b. i would like to add ftpserver to the target , i confused where to add
in kernel space or userspace.


any pointers will be helpful.

Thanks & Regards
Gowri

Re: vsftp -- ping ( two problems)

[Ralf Baechle]

On Fri, Mar 17, 2006 at 04:11:26PM +0900, Gowri Satish Adimulam wrote:

> I have two problems 
> 
> a. i have added icmp.c to the kernel 2.6.14 (mips).
> 
>   i have connected a cross cable to pc , IAM ABLE TO PING THE MIPS
> target board from pc , but in target even self ping is not responding.

Sounds like you didn't configure the loopback interface.

> b. i would like to add ftpserver to the target , i confused where to add
> in kernel space or userspace.

This absolutely belongs into userspace.

  Ralf

Re: au1550 oprofile

[Ralf Baechle]

On Thu, Mar 16, 2006 at 09:22:11PM -0500, Steve Lazaridis wrote:

> Has anyone successfully ran oprofile on an au1550?
> If so, was it in BigEndian mode?
> 
> Are there any known issues with oprofile on au1xxx platforms?

Alchemy processors don't implement performance counters, so there are
by definition no issues ;-)  That unfortunately means you're stuck
with timer mode.

  Ralf

Re: au1550 oprofile

[Steve Lazaridis]

Thats true,
But my problem is that timer mode isn't even working

Ralf Baechle wrote:
> On Thu, Mar 16, 2006 at 09:22:11PM -0500, Steve Lazaridis wrote:
> 
>> Has anyone successfully ran oprofile on an au1550?
>> If so, was it in BigEndian mode?
>>
>> Are there any known issues with oprofile on au1xxx platforms?
> 
> Alchemy processors don't implement performance counters, so there are
> by definition no issues ;-)  That unfortunately means you're stuck
> with timer mode.
> 
>   Ralf

Re: au1550 oprofile

[Steve Lazaridis]

I figured out the problem.
Only I'm not sure if it's actually a bug or not. :)

It seems as if it's in the userspace oprofile tools.

I commented out the following from oprofile/daemon/opd_trans.c   and it 
works fine now.

/* FIXME: this logic is perhaps too harsh? */
if (trans->current->ignored || (trans->last && trans->last->ignored)) {
       verbprintf(vmisc, "in the harsh logic\n");
       goto out;
}


Maybe it's just too harsh for MIPS platforms?  The same version of 
oprofile worked fine on my x86 workstation.


Thanks,
Steve



Steve Lazaridis wrote:
> Thats true,
> But my problem is that timer mode isn't even working
> 
> Ralf Baechle wrote:
>> On Thu, Mar 16, 2006 at 09:22:11PM -0500, Steve Lazaridis wrote:
>>
>>> Has anyone successfully ran oprofile on an au1550?
>>> If so, was it in BigEndian mode?
>>>
>>> Are there any known issues with oprofile on au1xxx platforms?
>>
>> Alchemy processors don't implement performance counters, so there are
>> by definition no issues ;-)  That unfortunately means you're stuck
>> with timer mode.
>>
>>   Ralf