[Devel] Re: [ckrm-tech] [RFC][PATCH 3/7] UBC: ub context and inheritance

[Kirill Korotaev]

Chandra Seetharaman wrote:
> On Wed, 2006-08-16 at 19:38 +0400, Kirill Korotaev wrote:
> 
>>Contains code responsible for setting UB on task,
>>it's inheriting and setting host context in interrupts.
>>
>>Task references three beancounters:
>>  1. exec_ub  current context. all resources are
>>              charged to this beancounter.
>>  2. task_ub  beancounter to which task_struct is
>>              charged itself.
> 
> 
> I do not see why task_ub is needed ? i do not see it being used
> anywhere.
it is used to charge task itself. will be heavily used in next patch set
adding "numproc" UBC parameter.

>>  3. fork_sub beancounter which is inherited by
>>              task's children on fork
> 
> 
>>From other emails it looks like renaming fork/exec to be real/effective
> will be easier to understand.
there is no "real". exec_ub is effective indeed,
but fork_sub is the one to inherit on fork().

Kirill