Hi, Andrew,
Andrew Morton writes:
> On Mon, 7 Aug 2017 15:21:31 +0800 "Huang, Ying" wrote:
>
>> From: Huang Ying
>>
>> Huge page helps to reduce TLB miss rate, but it has higher cache
>> footprint, sometimes this may cause some issue. For example, when
>> clearing huge page on x86_64 platfo
On Mon, 7 Aug 2017 15:21:31 +0800 "Huang, Ying" wrote:
> From: Huang Ying
>
> Huge page helps to reduce TLB miss rate, but it has higher cache
> footprint, sometimes this may cause some issue. For example, when
> clearing huge page on x86_64 platform, the cache footprint is 2M. But
> on a Xe
Matthew Wilcox writes:
> On Mon, Aug 07, 2017 at 03:21:31PM +0800, Huang, Ying wrote:
>> @@ -2509,7 +2509,8 @@ enum mf_action_page_type {
>> #if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS)
>> extern void clear_huge_page(struct page *page,
>> unsign
On Mon, Aug 07, 2017 at 03:21:31PM +0800, Huang, Ying wrote:
> @@ -2509,7 +2509,8 @@ enum mf_action_page_type {
> #if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS)
> extern void clear_huge_page(struct page *page,
> unsigned long addr,
> -
"Huang, Ying" writes:
> "Kirill A. Shutemov" writes:
>
>> On Mon, Aug 07, 2017 at 03:21:31PM +0800, Huang, Ying wrote:
>>> From: Huang Ying
>>>
>>> Huge page helps to reduce TLB miss rate, but it has higher cache
>>> footprint, sometimes this may cause some issue. For example, when
>>> cleari
Christopher Lameter writes:
> On Mon, 7 Aug 2017, Huang, Ying wrote:
>
>> --- a/mm/memory.c
>> +++ b/mm/memory.c
>> @@ -4374,9 +4374,31 @@ void clear_huge_page(struct page *page,
>> }
>>
>> might_sleep();
>> -for (i = 0; i < pages_per_huge_page; i++) {
>> +VM_BUG_ON(clamp(addr_h
Mike Kravetz writes:
> On 08/07/2017 12:21 AM, Huang, Ying wrote:
>> From: Huang Ying
>>
>> Huge page helps to reduce TLB miss rate, but it has higher cache
>> footprint, sometimes this may cause some issue. For example, when
>> clearing huge page on x86_64 platform, the cache footprint is 2M.
On 08/07/2017 12:21 AM, Huang, Ying wrote:
> From: Huang Ying
>
> Huge page helps to reduce TLB miss rate, but it has higher cache
> footprint, sometimes this may cause some issue. For example, when
> clearing huge page on x86_64 platform, the cache footprint is 2M. But
> on a Xeon E5 v3 2699 C
Christopher Lameter writes:
> On Mon, 7 Aug 2017, Huang, Ying wrote:
>
>> --- a/mm/memory.c
>> +++ b/mm/memory.c
>> @@ -4374,9 +4374,31 @@ void clear_huge_page(struct page *page,
>> }
>>
>> might_sleep();
>> -for (i = 0; i < pages_per_huge_page; i++) {
>> +VM_BUG_ON(clamp(addr_h
"Kirill A. Shutemov" writes:
> On Mon, Aug 07, 2017 at 03:21:31PM +0800, Huang, Ying wrote:
>> From: Huang Ying
>>
>> Huge page helps to reduce TLB miss rate, but it has higher cache
>> footprint, sometimes this may cause some issue. For example, when
>> clearing huge page on x86_64 platform,
On Mon, 7 Aug 2017, Huang, Ying wrote:
> --- a/mm/memory.c
> +++ b/mm/memory.c
> @@ -4374,9 +4374,31 @@ void clear_huge_page(struct page *page,
> }
>
> might_sleep();
> - for (i = 0; i < pages_per_huge_page; i++) {
> + VM_BUG_ON(clamp(addr_hint, addr, addr +
> +
On Mon, Aug 07, 2017 at 03:21:31PM +0800, Huang, Ying wrote:
> From: Huang Ying
>
> Huge page helps to reduce TLB miss rate, but it has higher cache
> footprint, sometimes this may cause some issue. For example, when
> clearing huge page on x86_64 platform, the cache footprint is 2M. But
> on a
Jan Kara writes:
> On Mon 07-08-17 15:21:31, Huang, Ying wrote:
>> From: Huang Ying
>>
>> Huge page helps to reduce TLB miss rate, but it has higher cache
>> footprint, sometimes this may cause some issue. For example, when
>> clearing huge page on x86_64 platform, the cache footprint is 2M.
On Mon 07-08-17 15:21:31, Huang, Ying wrote:
> From: Huang Ying
>
> Huge page helps to reduce TLB miss rate, but it has higher cache
> footprint, sometimes this may cause some issue. For example, when
> clearing huge page on x86_64 platform, the cache footprint is 2M. But
> on a Xeon E5 v3 2699
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