Re: [PATCH 4/4] hugetlb: hugepagesnid=: add 1G huge page support

From: Luiz Capitulino
Date: Tue Feb 11 2014 - 10:27:30 EST


On Mon, 10 Feb 2014 15:30:32 -0800
Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Mon, 10 Feb 2014 12:27:48 -0500 Luiz Capitulino <lcapitulino@xxxxxxxxxx> wrote:
>
> >
> > ...
> >
> > --- a/mm/hugetlb.c
> > +++ b/mm/hugetlb.c
> > @@ -2051,6 +2051,29 @@ void __init hugetlb_add_hstate(unsigned order)
> > parsed_hstate = h;
> > }
> >
> > +static void __init hugetlb_hstate_alloc_pages_nid(struct hstate *h,
> > + int nid,
> > + unsigned long nr_pages)
> > +{
> > + struct huge_bootmem_page *m;
> > + unsigned long i;
> > + void *addr;
> > +
> > + for (i = 0; i < nr_pages; i++) {
> > + addr = memblock_virt_alloc_nid_nopanic(
> > + huge_page_size(h), huge_page_size(h),
> > + 0, BOOTMEM_ALLOC_ACCESSIBLE, nid);
> > + if (!addr)
> > + break;
> > + m = addr;
> > + BUG_ON((unsigned long)virt_to_phys(m) & (huge_page_size(h) - 1));
>
> IS_ALIGNED()?
>
> > + list_add(&m->list, &huge_boot_pages);
> > + m->hstate = h;
> > + }
> > +
> > + h->max_huge_pages += i;
> > +}
> > +
> > void __init hugetlb_add_nrpages_nid(unsigned order, unsigned long nid,
> > unsigned long nr_pages)
> > {
>
> Please cc Yinghai Lu <yinghai@xxxxxxxxxx> on these patches - he
> understands memblock well and is a strong reviewer.

Will do for v2, with your comments addressed.
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