Re: [RFC PATCH 1/2] New cgroup subsystem API (->initialize())

[Li Zefan <lizf@cn.fujitsu.com>]

Bharata B Rao wrote:
> From: Balaji Rao <balajirrao@gmail.com>
> 
> cgroup: Add ->initialize() to cgroup_subsys structure
> 
> Some cgroup subsystems (like cpu controller) would need subsystem
> specific initialization. Such subsystems can define ->initialize()
> which gets called during cgroup_init() (and not cgroup_init_early()).
> 

I think it's better to avoid adding this.

It would be best if we can add a hook to initialize init_task_group.stat where
kmalloc is available but acount_xxx_time() hasn't been called. Otherwise, we
have to check (tg->stat == NULL) in account_task_group_time(), then why not add
a hook in smp_init_smp() to do initialization?