linux-kernel - Re: [PATCH] proc: add percpu populated pages count to meminfo

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Message-ID: <20180807151146.GB3978217@devbig004.ftw2.facebook.com>
Date:   Tue, 7 Aug 2018 08:11:46 -0700
From:   Tejun Heo <tj@...nel.org>
To:     Christopher Lameter <cl@...ux.com>
Cc:     Dennis Zhou <dennisszhou@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Roman Gushchin <guro@...com>, kernel-team@...com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] proc: add percpu populated pages count to meminfo

Hello,

On Tue, Aug 07, 2018 at 02:12:06PM +0000, Christopher Lameter wrote:
> > @@ -121,6 +122,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
> >  		   (unsigned long)VMALLOC_TOTAL >> 10);
> >  	show_val_kb(m, "VmallocUsed:    ", 0ul);
> >  	show_val_kb(m, "VmallocChunk:   ", 0ul);
> > +	show_val_kb(m, "PercpuPopulated:", pcpu_nr_populated_pages());
> 
> Populated? Can we avoid this for simplicities sake: "Percpu"?
> 
> We do not count pages that are not present elsewhere either and those
> counters do not have "populated" in them.

Yeah, let's do "Percpu".

Thanks.

-- 
tejun