linux-kernel - Re: [PATCH 0/4] hugetlb: add hugepagesnid= command-line option

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Message-ID: <20140211171035.GN6732@suse.de>
Date:	Tue, 11 Feb 2014 17:10:35 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	Marcelo Tosatti <mtosatti@...hat.com>
Cc:	David Rientjes <rientjes@...gle.com>,
	Luiz Capitulino <lcapitulino@...hat.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andi Kleen <andi@...stfloor.org>,
	Rik van Riel <riel@...hat.com>
Subject: Re: [PATCH 0/4] hugetlb: add hugepagesnid= command-line option

On Tue, Feb 11, 2014 at 01:26:29PM -0200, Marcelo Tosatti wrote:
> > Or take a stab at allocating 1G pages at runtime. It would require
> > finding properly aligned 1Gs worth of contiguous MAX_ORDER_NR_PAGES at
> > runtime. I would expect it would only work very early in the lifetime of
> > the system but if the user is willing to use kernel parameters to
> > allocate them then it should not be an issue.
> 
> Can be an improvement on top of the current patchset? Certain use-cases
> require allocation guarantees (even if that requires kernel parameters).
> 

Sure, they're not mutually exclusive. It would just avoid the need to
create a new kernel parameter and use the existing interfaces.

-- 
Mel Gorman
SUSE Labs
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