Task tsruct relevant question

Task tsruct relevant question

[Takeharu KATO]

Dear maintainers:

I have a queestion about task_struct relevant issue.
As far as I know, task_structs in kernel 2.5.X are placed in
slab cache. But they are placed on kernel stack on linux-2.4.67
for PPC4xx.
Is it correct in linuxppc branch?
Does any one have a plan to move them into slab cache down the line?


--
Takeharu KATO
Fujitsu Limited
Email:tkato@cs.fujitsu.co.jp (ext. 7112-4621)

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Re: Task tsruct relevant question

[Paul Mackerras]

Takeharu KATO writes:

> I have a queestion about task_struct relevant issue.
> As far as I know, task_structs in kernel 2.5.X are placed in
> slab cache. But they are placed on kernel stack on linux-2.4.67
> for PPC4xx.
> Is it correct in linuxppc branch?
> Does any one have a plan to move them into slab cache down the line?

Separating the task_struct from the kernel stack is a change that was
made to all architectures earlier on in 2.5 development.  There is no
plan to do something similar in the 2.4 series since the 2.4 series is
now officially in maintenance mode.  (The OCP framework for PPC is
still being worked on in 2.4 but most other stuff should be pretty
much stabilized by now.)

Paul.


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Re: Task tsruct relevant question

[Takeharu KATO]

Paul Mackerras wrote:
>
> Takeharu KATO writes:
>
> > I have a queestion about task_struct relevant issue.
> > As far as I know, task_structs in kernel 2.5.X are placed in
> > slab cache. But they are placed on kernel stack on linux-2.4.67
> > for PPC4xx.
Sorry.　I made typo.
I wanted to say task_struct is not separated from kernel stack
in linux-2.5.67  for PPC4xx support.
Does anyone have plan to separate task_struct from kernel stacks
for PPC4xx port?


--
Takeharu KATO
Fujitsu Limited
Email:tkato@cs.fujitsu.co.jp (ext. 7112-4621)

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/