linux-kernel - Re: [RFC][-mm] [2/2] Simple stats for memory resource controller

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Date:	Mon, 28 Apr 2008 21:30:29 +0530
From:	Balaji Rao <balajirrao@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, containers@...ts.osdl.org,
	menage@...gle.com, balbir@...ibm.com, dhaval@...ux.vnet.ibm.com
Subject: Re: [RFC][-mm] [2/2] Simple stats for memory resource controller

On Monday 14 April 2008 08:09:48 pm Balbir Singh wrote:
> Balaji Rao wrote:
> > This patch implements trivial statistics for the memory resource controller.
> > 
> > Signed-off-by: Balaji Rao <balajirrao@...il.com>
> > CC: Balbir Singh <balbir@...ux.vnet.ibm.com>
> > CC: Dhaval Giani <dhaval@...ux.vnet.ibm.com>
> > 
> > diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> > index a860765..ca98b21 100644
> > --- a/mm/memcontrol.c
> > +++ b/mm/memcontrol.c
> > @@ -47,6 +47,8 @@ enum mem_cgroup_stat_index {
> >  	 */
> >  	MEM_CGROUP_STAT_CACHE, 	   /* # of pages charged as cache */
> >  	MEM_CGROUP_STAT_RSS,	   /* # of pages charged as rss */
> > +	MEM_CGROUP_STAT_PGPGIN_COUNT,	/* # of pages paged in */
> > +	MEM_CGROUP_STAT_PGPGOUT_COUNT,	/* # of pages paged out */
> > 
> >  	MEM_CGROUP_STAT_NSTATS,
> >  };
> > @@ -198,6 +200,13 @@ static void mem_cgroup_charge_statistics(struct mem_cgroup *mem, int flags,
> >  		__mem_cgroup_stat_add_safe(stat, MEM_CGROUP_STAT_CACHE, val);
> >  	else
> >  		__mem_cgroup_stat_add_safe(stat, MEM_CGROUP_STAT_RSS, val);
> > +
> > +	if (charge)
> > +		__mem_cgroup_stat_add_safe(stat,
> > +				MEM_CGROUP_STAT_PGPGIN_COUNT, 1);
> > +	else
> > +		__mem_cgroup_stat_add_safe(stat,
> > +				MEM_CGROUP_STAT_PGPGOUT_COUNT, 1);
> >  }
> > 
> >  static struct mem_cgroup_per_zone *
> > @@ -897,6 +906,8 @@ static const struct mem_cgroup_stat_desc {
> >  } mem_cgroup_stat_desc[] = {
> >  	[MEM_CGROUP_STAT_CACHE] = { "cache", PAGE_SIZE, },
> >  	[MEM_CGROUP_STAT_RSS] = { "rss", PAGE_SIZE, },
> > +	[MEM_CGROUP_STAT_PGPGIN_COUNT] = {"pgpgin", 1, },
> > +	[MEM_CGROUP_STAT_PGPGOUT_COUNT] = {"pgpgout", 1, },
> >  };
> > 
> >  static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft,
> > 
> 
> Acked-by: Balbir Singh <balbir@...ux.vnet.ibm.com>
> 
> Hi, Andrew,
> 
> Could you please include these statistics in -mm.
> 
> Balbir
> 
> 
Hi Andrew,

Now that Balbir Singh has ACKed it, could you please include it in -mm ?

-- 
Warm Regards,

Balaji Rao
Dept. of Mechanical Engineering
NITK
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