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From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"balbir@linux.vnet.ibm.com" <balbir@linux.vnet.ibm.com>,
	hugh@veritas.com, taka@valinux.co.jp
Subject: Re: [RFC][PATCH 3/5] memcg : mem+swap controller kconfig
Date: Tue, 4 Nov 2008 18:13:43 +0900	[thread overview]
Message-ID: <20081104181343.3b0eb168.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <20081104175406.cb46d68d.nishimura@mxp.nes.nec.co.jp>

On Tue, 4 Nov 2008 17:54:06 +0900
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> wrote:

> > +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
> > +static void __init enable_swap_cgroup(void)
> > +{
> > +	if (really_do_swap_account)
> > +		do_swap_account = 1;
> > +}
> I think check for !mem_cgroup_subsys.disabled is also needed here.
> 

Hmm, mem_cgroup_create() is called even when disabled ?
.......seems so.

Ok, will fix. thank you for checking it.

Regards,
-Kame


> 
> Thanks,
> Daisuke Nishimura.
> 
> > +#else
> > +static void __init enable_swap_cgroup(void)
> > +{
> > +}
> > +#endif
> > +
> >  static struct cgroup_subsys_state *
> >  mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont)
> >  {
> > @@ -1377,6 +1398,7 @@ mem_cgroup_create(struct cgroup_subsys *
> >  
> >  	if (unlikely((cont->parent) == NULL)) {
> >  		mem = &init_mem_cgroup;
> > +		enable_swap_cgroup();
> >  	} else {
> >  		mem = mem_cgroup_alloc();
> >  		if (!mem)
> > @@ -1460,3 +1482,13 @@ struct cgroup_subsys mem_cgroup_subsys =
> >  	.attach = mem_cgroup_move_task,
> >  	.early_init = 0,
> >  };
> > +
> > +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
> > +
> > +static int __init disable_swap_account(char *s)
> > +{
> > +	really_do_swap_account = 0;
> > +	return 1;
> > +}
> > +__setup("noswapaccount", disable_swap_account);
> > +#endif
> > Index: mmotm-2.6.28-rc2+/Documentation/kernel-parameters.txt
> > ===================================================================
> > --- mmotm-2.6.28-rc2+.orig/Documentation/kernel-parameters.txt
> > +++ mmotm-2.6.28-rc2+/Documentation/kernel-parameters.txt
> > @@ -1543,6 +1543,9 @@ and is between 256 and 4096 characters. 
> >  
> >  	nosoftlockup	[KNL] Disable the soft-lockup detector.
> >  
> > +	noswapaccount	[KNL] Disable accounting of swap in memory resource
> > +			controller. (See Documentation/controllers/memory.txt)
> > +
> >  	nosync		[HW,M68K] Disables sync negotiation for all devices.
> >  
> >  	notsc		[BUGS=X86-32] Disable Time Stamp Counter
> > Index: mmotm-2.6.28-rc2+/include/linux/memcontrol.h
> > ===================================================================
> > --- mmotm-2.6.28-rc2+.orig/include/linux/memcontrol.h
> > +++ mmotm-2.6.28-rc2+/include/linux/memcontrol.h
> > @@ -77,6 +77,9 @@ extern void mem_cgroup_record_reclaim_pr
> >  extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone,
> >  					int priority, enum lru_list lru);
> >  
> > +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
> > +extern int do_swap_account;
> > +#endif
> >  
> >  #else /* CONFIG_CGROUP_MEM_RES_CTLR */
> >  struct mem_cgroup;
> > 
> 


  reply	other threads:[~2008-11-04  9:15 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-31  2:50 [RFC][PATCH 0/5] memcg : some patches related to swap KAMEZAWA Hiroyuki
2008-10-31  2:52 ` [RFC][PATCH 1/5] memcg : force_empty to do move account KAMEZAWA Hiroyuki
2008-10-31  9:25   ` Daisuke Nishimura
2008-11-04  6:15   ` Paul Menage
2008-11-04  6:17     ` KAMEZAWA Hiroyuki
2008-11-04  6:23       ` Paul Menage
2008-11-04  6:25         ` KAMEZAWA Hiroyuki
2008-10-31  2:54 ` [RFC][PATCH 2/5] memcg : handle swap cache KAMEZAWA Hiroyuki
2008-11-04  8:42   ` Daisuke Nishimura
2008-11-04  9:04     ` KAMEZAWA Hiroyuki
2008-11-04 10:28       ` Daisuke Nishimura
2008-11-05  0:07         ` KAMEZAWA Hiroyuki
2008-11-05  2:03           ` KAMEZAWA Hiroyuki
2008-10-31  2:55 ` [RFC][PATCH 3/5] memcg : mem+swap controller kconfig KAMEZAWA Hiroyuki
2008-11-04  8:54   ` Daisuke Nishimura
2008-11-04  9:13     ` KAMEZAWA Hiroyuki [this message]
2008-10-31  2:58 ` [RFC][PATCH 4/5] memcg : add swap_cgroup KAMEZAWA Hiroyuki
2008-10-31  2:59 ` [RFC][PATCH 5/5] memcg : mem+swap controller KAMEZAWA Hiroyuki
2008-11-02  6:43 ` [RFC][PATCH 6/5] memcg : synchronous LRU KAMEZAWA Hiroyuki

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