linux-kernel - Re: [PATCH] mm, x86: Do not zero hugetlbfs pages at boot. -v2

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Date:	Wed, 3 Apr 2013 12:00:12 -0500
From:	Robin Holt <holt@....com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	Robin Holt <holt@....com>, Cliff Wickman <cpw@....com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org,
	wli@...omorphy.com
Subject: Re: [PATCH] mm, x86: Do not zero hugetlbfs pages at boot. -v2

On Wed, Apr 03, 2013 at 04:02:47PM +0200, Michal Hocko wrote:
> On Tue 02-04-13 21:43:44, Robin Holt wrote:
> [...]
> > diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> > index ca9a7c6..7683f6a 100644
> > --- a/mm/hugetlb.c
> > +++ b/mm/hugetlb.c
> > @@ -1185,7 +1185,7 @@ int __weak alloc_bootmem_huge_page(struct hstate *h)
> >  	while (nr_nodes) {
> >  		void *addr;
> >  
> > -		addr = __alloc_bootmem_node_nopanic(
> > +		addr = __alloc_bootmem_node_nopanic_notzeroed(
> >  				NODE_DATA(hstate_next_node_to_alloc(h,
> >  						&node_states[N_MEMORY])),
> >  				huge_page_size(h), huge_page_size(h), 0);
> 
> Ohh, and powerpc seems to have its own opinion how to allocate huge
> pages. See arch/powerpc/mm/hugetlbpage.c

Do I need to address their allocations?  Can I leave that part of the
changes as something powerpc can address if they are affected by this?

Robin
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