From: Andrew Morton <akpm@linux-foundation.org>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: David Rientjes <rientjes@google.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Dave Hansen <dave.hansen@intel.com>,
Andrey Ryabinin <a.ryabinin@samsung.com>,
Sasha Levin <sasha.levin@oracle.com>,
linux-mm@kvack.org
Subject: Re: [PATCH 0/2] faultaround updates
Date: Mon, 4 Aug 2014 15:20:59 -0700 [thread overview]
Message-ID: <20140804152059.fc9effe1989072d37214ab7f@linux-foundation.org> (raw)
In-Reply-To: <20140802083929.GA17045@node.dhcp.inet.fi>
On Sat, 2 Aug 2014 11:39:29 +0300 "Kirill A. Shutemov" <kirill@shutemov.name> wrote:
> On Fri, Aug 01, 2014 at 02:32:36PM -0700, David Rientjes wrote:
> > On Fri, 1 Aug 2014, Kirill A. Shutemov wrote:
> >
> > > One fix and one tweak for faultaround code.
> > >
> > > As alternative, we could just drop debugfs interface and make
> > > fault_around_bytes constant.
> > >
> >
> > If we can remove the debugfs interface, then it seems better than
> > continuing to support it. Any objections to removing it?
>
> Andrew asked it initially. Up to him.
Well, we had a bunch of magic constants in there which may not be
optimized. The idea is to make them tunable so that interested parties
can determine the best settings without having to rebuild the kernel.
Once that's all done we can remove the tunable (because it's debugfs)
and hard-wire the optimised constants.
But I don't think anyone has done this tuning work yet.
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next prev parent reply other threads:[~2014-08-04 22:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-01 11:51 Kirill A. Shutemov
2014-08-01 11:51 ` [PATCHv2 1/2] mm: close race between do_fault_around() and fault_around_bytes_set() Kirill A. Shutemov
2014-08-01 21:36 ` Naoya Horiguchi
2014-08-01 11:51 ` [PATCH 2/2] mm: mark fault_around_bytes __read_mostly Kirill A. Shutemov
2014-08-01 21:32 ` [PATCH 0/2] faultaround updates David Rientjes
2014-08-02 8:39 ` Kirill A. Shutemov
2014-08-04 22:20 ` Andrew Morton [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-07-29 11:33 Kirill A. Shutemov
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