linux-kernel - Re: [RFD 4/9] Make total

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Message-ID: <1317160837.21836.21.camel@twins>
Date:	Wed, 28 Sep 2011 00:00:37 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Glauber Costa <glommer@...allels.com>
Cc:	linux-kernel@...r.kernel.org, paul@...lmenage.org,
	lizf@...fujitsu.com, daniel.lezcano@...e.fr,
	jbottomley@...allels.com,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>
Subject: Re: [RFD 4/9] Make total_forks per-cgroup

On Fri, 2011-09-23 at 19:20 -0300, Glauber Costa wrote:
> @@ -1039,6 +1035,8 @@ static void posix_cpu_timers_init(struct task_struct *tsk)
>         INIT_LIST_HEAD(&tsk->cpu_timers[2]);
>  }
>  
> +struct task_group *task_group(struct task_struct *p);

That doesn't appear to be actually used in this file..

Also, since there's already a for_each_possible_cpu() loop in that
proc/stat function, would it yield some code improvement to make
total_forks a cpu_usage_stat?

I guess the whole cputime64_t crap gets in the way of that being
natural... 

We could of course kill off the cputime64_t thing, its pretty pointless
and its a u64 all over the board. I think Martin or Heiko created this
stuff (although I might be wrong, my git tree doesn't go back that far).

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