From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
mpe@ellerman.id.au,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH V2] mm: Some arch may want to use HPAGE_PMD related values as variables
Date: Wed, 10 Feb 2016 01:14:57 +0200 [thread overview]
Message-ID: <20160209231457.GB22327@node.shutemov.name> (raw)
In-Reply-To: <20160209132608.814f08a0c3670b4f9d807441@linux-foundation.org>
On Tue, Feb 09, 2016 at 01:26:08PM -0800, Andrew Morton wrote:
> On Tue, 9 Feb 2016 21:41:44 +0530 "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> wrote:
> > @@ -660,6 +660,18 @@ static int __init hugepage_init(void)
> > return -EINVAL;
> > }
> >
> > + khugepaged_pages_to_scan = HPAGE_PMD_NR * 8;
> > + khugepaged_max_ptes_none = HPAGE_PMD_NR - 1;
>
> I don't understand this change. We change the initialization from
> at-compile-time to at-run-time, but nothing useful appears to have been
> done.
It's preparation patch. HPAGE_PMD_NR is going to be based on variable on
Power soon. Compile-time is not an option.
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2016-02-09 23:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-09 16:11 [PATCH V2] mm: Some arch may want to use HPAGE_PMD related values as variables Aneesh Kumar K.V
2016-02-09 19:42 ` Kirill A. Shutemov
2016-02-10 2:34 ` Aneesh Kumar K.V
2016-02-09 21:26 ` Andrew Morton
2016-02-09 23:14 ` Kirill A. Shutemov [this message]
2016-02-10 2:39 ` Aneesh Kumar K.V
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