From: Simon Jeons <simon.jeons@gmail.com>
To: Michal Hocko <mhocko@suse.cz>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mel@csn.ul.ie>, Hugh Dickins <hughd@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Andi Kleen <andi@firstfloor.org>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 0/9] extend hugepage migration
Date: Fri, 22 Mar 2013 07:46:32 +0800 [thread overview]
Message-ID: <514B9BD8.9050207@gmail.com> (raw)
In-Reply-To: <20130321125628.GB6051@dhcp22.suse.cz>
Hi Michal,
On 03/21/2013 08:56 PM, Michal Hocko wrote:
> On Thu 21-03-13 07:49:48, Simon Jeons wrote:
> [...]
>> When I hacking arch/x86/mm/hugetlbpage.c like this,
>> diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
>> index ae1aa71..87f34ee 100644
>> --- a/arch/x86/mm/hugetlbpage.c
>> +++ b/arch/x86/mm/hugetlbpage.c
>> @@ -354,14 +354,13 @@ hugetlb_get_unmapped_area(struct file *file,
>> unsigned long addr,
>>
>> #endif /*HAVE_ARCH_HUGETLB_UNMAPPED_AREA*/
>>
>> -#ifdef CONFIG_X86_64
>> static __init int setup_hugepagesz(char *opt)
>> {
>> unsigned long ps = memparse(opt, &opt);
>> if (ps == PMD_SIZE) {
>> hugetlb_add_hstate(PMD_SHIFT - PAGE_SHIFT);
>> - } else if (ps == PUD_SIZE && cpu_has_gbpages) {
>> - hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
>> + } else if (ps == PUD_SIZE) {
>> + hugetlb_add_hstate(PMD_SHIFT - PAGE_SHIFT+4);
>> } else {
>> printk(KERN_ERR "hugepagesz: Unsupported page size %lu M\n",
>> ps >> 20);
>>
>> I set boot=hugepagesz=1G hugepages=10, then I got 10 32MB huge pages.
>> What's the difference between these pages which I hacking and normal
>> huge pages?
> How is this related to the patch set?
> Please _stop_ distracting discussion to unrelated topics!
>
> Nothing personal but this is just wasting our time.
Sorry kindly Michal, my bad.
Btw, could you explain this question for me? very sorry waste your time.
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next prev parent reply other threads:[~2013-03-21 23:46 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-21 19:41 [RFC][PATCH 0/9] extend hugepage migration Naoya Horiguchi
2013-02-21 19:41 ` [PATCH 1/9] migrate: add migrate_entry_wait_huge() Naoya Horiguchi
2013-03-18 14:51 ` Michal Hocko
2013-03-19 0:06 ` Naoya Horiguchi
2013-03-19 23:57 ` Simon Jeons
2013-03-20 21:53 ` Naoya Horiguchi
2013-03-20 23:36 ` Simon Jeons
2013-04-04 4:57 ` Simon Jeons
2013-02-21 19:41 ` [PATCH 2/9] migrate: make core migration code aware of hugepage Naoya Horiguchi
2013-03-18 15:22 ` Michal Hocko
2013-03-18 15:33 ` Michal Hocko
2013-03-19 0:06 ` Naoya Horiguchi
2013-02-21 19:41 ` [PATCH 3/9] soft-offline: use migrate_pages() instead of migrate_huge_page() Naoya Horiguchi
2013-02-27 7:25 ` Chen Gong
2013-02-27 17:06 ` Naoya Horiguchi
2013-02-27 17:57 ` Naoya Horiguchi
2013-02-21 19:41 ` [PATCH 4/9] migrate: clean up migrate_huge_page() Naoya Horiguchi
2013-02-21 19:41 ` [PATCH 5/9] migrate: enable migrate_pages() to migrate hugepage Naoya Horiguchi
2013-03-18 15:40 ` Michal Hocko
2013-03-19 0:07 ` Naoya Horiguchi
2013-03-19 7:11 ` Michal Hocko
2013-03-20 6:12 ` Naoya Horiguchi
2013-03-20 7:41 ` Michal Hocko
2013-03-20 0:31 ` Simon Jeons
2013-03-20 21:59 ` Naoya Horiguchi
2013-03-21 0:06 ` Simon Jeons
2013-02-21 19:41 ` [PATCH 6/9] migrate: enable move_pages() " Naoya Horiguchi
2013-02-21 19:41 ` [PATCH 7/9] mbind: enable mbind() " Naoya Horiguchi
2013-02-21 19:41 ` [PATCH 8/9] memory-hotplug: enable memory hotplug to handle hugepage Naoya Horiguchi
2013-02-23 7:05 ` Hillf Danton
2013-02-25 16:57 ` Naoya Horiguchi
2013-02-27 7:36 ` Chen Gong
2013-02-27 17:16 ` Naoya Horiguchi
2013-03-18 16:07 ` Michal Hocko
2013-03-20 3:55 ` Naoya Horiguchi
2013-03-20 7:57 ` Michal Hocko
2013-03-20 1:03 ` Simon Jeons
2013-03-20 22:05 ` Naoya Horiguchi
2013-03-20 23:55 ` Simon Jeons
2013-02-21 19:41 ` [PATCH 9/9] remove /proc/sys/vm/hugepages_treat_as_movable Naoya Horiguchi
2013-02-28 6:02 ` KOSAKI Motohiro
2013-02-28 18:16 ` Naoya Horiguchi
2013-03-18 15:51 ` Michal Hocko
2013-03-19 0:07 ` Naoya Horiguchi
2013-03-19 23:43 ` [RFC][PATCH 0/9] extend hugepage migration Simon Jeons
2013-03-20 21:35 ` Naoya Horiguchi
2013-03-20 23:49 ` Simon Jeons
2013-03-21 12:56 ` Michal Hocko
2013-03-21 23:46 ` Simon Jeons [this message]
[not found] ` <20130322081532.GC31457@dhcp22.suse.cz>
2013-04-05 1:14 ` Simon Jeons
2013-04-05 8:08 ` Michal Hocko
2013-04-05 9:00 ` Simon Jeons
2013-04-05 9:30 ` Michal Hocko
2013-04-07 0:32 ` Simon Jeons
2013-04-07 14:05 ` KOSAKI Motohiro
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