Enabling OProfile in the OLPC kernels?

William Cohen wcohen at redhat.com
Fri Mar 16 14:24:33 EDT 2007


Jim Gettys wrote:
> Thank you for your efforts!
> 
> On Mon, 2007-03-12 at 16:39 -0400, William Cohen wrote:
>> I have been successful in getting OProfile in timer mode to work on a OLPC Beta 
>> 2 machine. Would it be worthwhile to build the OProfile module in the kernel 
>> build? 
> 
> Yes.

Could we turn that on in near future. Then people can avoid building custom 
kernels to run OProfile? The 314 build still doesn't have OProfile enabled. Who 
do I need to make the request to change the line in the kernel config files to 
mke oprofile support available?

>> Developers might find it useful to get some system-wide sampling to find 
>> out where the hot spots are in code. Are there reasons other than space 
>> constraints that OProfile support is not included in the kernel?
> 
> Nope; it has been on our "we'd like to have" list of performance tools
> for quite a while.
>                                  - Jim
> 
>> -Will
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