Displaying 16 results from an estimated 16 matches for "prep_compound_pag".
Did you mean:
prep_compound_page
2020 Jun 21
2
[PATCH 13/16] mm: support THP migration to device private memory
On 19 Jun 2020, at 17:56, Ralph Campbell wrote:
> Support transparent huge page migration to ZONE_DEVICE private memory.
> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
> indicate the huge page was fully mapped by the CPU.
> Export prep_compound_page() so that device drivers can create huge
> device private pages after calling memremap_pages().
>
> Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
> ---
> include/linux/migrate.h | 1 +
> include/linux/mm.h | 1 +
> mm/huge_memory.c | 30 ++++--...
2020 Jun 22
2
[PATCH 13/16] mm: support THP migration to device private memory
...n 2020, at 17:56, Ralph Campbell wrote:
>>
>>> Support transparent huge page migration to ZONE_DEVICE private memory.
>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
>>> indicate the huge page was fully mapped by the CPU.
>>> Export prep_compound_page() so that device drivers can create huge
>>> device private pages after calling memremap_pages().
>>>
>>> Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
>>> ---
>>> include/linux/migrate.h | 1 +
>>> include/linux/mm.h...
2020 Jun 19
0
[PATCH 13/16] mm: support THP migration to device private memory
Support transparent huge page migration to ZONE_DEVICE private memory.
A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
indicate the huge page was fully mapped by the CPU.
Export prep_compound_page() so that device drivers can create huge
device private pages after calling memremap_pages().
Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
---
include/linux/migrate.h | 1 +
include/linux/mm.h | 1 +
mm/huge_memory.c | 30 ++++--
mm/internal.h | 1 -...
2020 Jun 22
2
[PATCH 13/16] mm: support THP migration to device private memory
...>>>>
>>>>> Support transparent huge page migration to ZONE_DEVICE private memory.
>>>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
>>>>> indicate the huge page was fully mapped by the CPU.
>>>>> Export prep_compound_page() so that device drivers can create huge
>>>>> device private pages after calling memremap_pages().
>>>>>
>>>>> Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
>>>>> ---
>>>>> include/linux/migrate.h | 1...
2020 Jun 22
0
[PATCH 13/16] mm: support THP migration to device private memory
...rote:
> On 19 Jun 2020, at 17:56, Ralph Campbell wrote:
>
>> Support transparent huge page migration to ZONE_DEVICE private memory.
>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
>> indicate the huge page was fully mapped by the CPU.
>> Export prep_compound_page() so that device drivers can create huge
>> device private pages after calling memremap_pages().
>>
>> Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
>> ---
>> include/linux/migrate.h | 1 +
>> include/linux/mm.h | 1 +
>> mm/hu...
2020 Nov 06
1
[PATCH v3 1/6] mm/thp: add prep_transhuge_device_private_page()
...*/
+ BUG_ON(compound_order(page) == 1);
INIT_LIST_HEAD(page_deferred_list(page));
set_compound_page_dtor(page, TRANSHUGE_PAGE_DTOR);
+
+ return page;
}
It simplifies the users.
> +void prep_transhuge_device_private_page(struct page *page)
> +{
> + prep_compound_page(page, HPAGE_PMD_ORDER);
> + prep_transhuge_page(page);
> + /* Only the head page has a reference to the pgmap. */
> + percpu_ref_put_many(page->pgmap->ref, HPAGE_PMD_NR - 1);
> +}
> +EXPORT_SYMBOL_GPL(prep_transhuge_device_private_page);
Something else that may interest you f...
2020 Jun 22
0
[PATCH 13/16] mm: support THP migration to device private memory
...lph Campbell wrote:
>>>
>>>> Support transparent huge page migration to ZONE_DEVICE private memory.
>>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
>>>> indicate the huge page was fully mapped by the CPU.
>>>> Export prep_compound_page() so that device drivers can create huge
>>>> device private pages after calling memremap_pages().
>>>>
>>>> Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
>>>> ---
>>>> include/linux/migrate.h | 1 +
>>>>...
2020 Jun 22
0
[PATCH 13/16] mm: support THP migration to device private memory
...; >>>>> Support transparent huge page migration to ZONE_DEVICE private memory.
> >>>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
> >>>>> indicate the huge page was fully mapped by the CPU.
> >>>>> Export prep_compound_page() so that device drivers can create huge
> >>>>> device private pages after calling memremap_pages().
> >>>>>
> >>>>> Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
> >>>>> ---
> >>>>> inclu...
2020 Sep 02
0
[PATCH v2 4/7] mm/thp: add prep_transhuge_device_private_page()
...mory.c b/mm/huge_memory.c
index a8d48994481a..1e848cc0c3dc 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -498,6 +498,14 @@ void prep_transhuge_page(struct page *page)
set_compound_page_dtor(page, TRANSHUGE_PAGE_DTOR);
}
+void prep_transhuge_device_private_page(struct page *page)
+{
+ prep_compound_page(page, HPAGE_PMD_ORDER);
+ prep_transhuge_page(page);
+ percpu_ref_put_many(page->pgmap->ref, HPAGE_PMD_NR - 1);
+}
+EXPORT_SYMBOL_GPL(prep_transhuge_device_private_page);
+
bool is_transparent_hugepage(struct page *page)
{
if (!PageCompound(page))
--
2.20.1
2020 Nov 06
0
[PATCH v3 1/6] mm/thp: add prep_transhuge_device_private_page()
...mory.c b/mm/huge_memory.c
index 08a183f6c3ab..b4141f12ff31 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -498,6 +498,15 @@ void prep_transhuge_page(struct page *page)
set_compound_page_dtor(page, TRANSHUGE_PAGE_DTOR);
}
+void prep_transhuge_device_private_page(struct page *page)
+{
+ prep_compound_page(page, HPAGE_PMD_ORDER);
+ prep_transhuge_page(page);
+ /* Only the head page has a reference to the pgmap. */
+ percpu_ref_put_many(page->pgmap->ref, HPAGE_PMD_NR - 1);
+}
+EXPORT_SYMBOL_GPL(prep_transhuge_device_private_page);
+
bool is_transparent_hugepage(struct page *page)
{
if (!Pag...
2020 Nov 06
1
[PATCH v3 1/6] mm/thp: add prep_transhuge_device_private_page()
On Thu, Nov 05, 2020 at 04:51:42PM -0800, Ralph Campbell wrote:
> +extern void prep_transhuge_device_private_page(struct page *page);
No need for the extern.
> +static inline void prep_transhuge_device_private_page(struct page *page)
> +{
> +}
Is the code to call this even reachable if THP support is configured
out? If not just declaring it unconditionally and letting dead code
2020 Jun 22
2
[PATCH 13/16] mm: support THP migration to device private memory
...gt;> Support transparent huge page migration to ZONE_DEVICE private memory.
> > >>>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
> > >>>>> indicate the huge page was fully mapped by the CPU.
> > >>>>> Export prep_compound_page() so that device drivers can create huge
> > >>>>> device private pages after calling memremap_pages().
> > >>>>>
> > >>>>> Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
> > >>>>> ---
> > >...
2020 Jun 19
22
[PATCH 00/16] mm/hmm/nouveau: THP mapping and migration
These patches apply to linux-5.8.0-rc1. Patches 1-3 should probably go
into 5.8, the others can be queued for 5.9. Patches 4-6 improve the HMM
self tests. Patch 7-8 prepare nouveau for the meat of this series which
adds support and testing for compound page mapping of system memory
(patches 9-11) and compound page migration to device private memory
(patches 12-16). Since these changes are split
2020 Jun 19
0
[PATCH 15/16] mm/hmm/test: add self tests for THP migration
...ARENT_HUGEPAGE
+ /*
+ * Check for PMD aligned PFN and create a huge page.
+ * Check for "< pfn_last - 1" so that the last two huge pages
+ * are used for normal pages.
+ */
+ if ((pfn & (HPAGE_PMD_NR - 1)) == 0 &&
+ pfn + HPAGE_PMD_NR < pfn_last - 1) {
+ prep_compound_page(page, HPAGE_PMD_ORDER);
+ page->zone_device_data = mdevice->free_huge_pages;
+ mdevice->free_huge_pages = page;
+ pfn += HPAGE_PMD_NR;
+ percpu_ref_put_many(page->pgmap->ref, HPAGE_PMD_NR - 1);
+ continue;
+ }
+#endif
page->zone_device_data = mdevice->free_pages;...
2020 Nov 06
12
[PATCH v3 0/6] mm/hmm/nouveau: add THP migration to migrate_vma_*
This series adds support for transparent huge page migration to
migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers.
Earlier versions were posted previously [1] and [2].
The patches apply cleanly to the linux-mm 5.10.0-rc2 tree. There are a
lot of other THP patches being posted. I don't think there are any
semantic conflicts but there may be some merge conflicts depending on
2020 Sep 02
10
[PATCH v2 0/7] mm/hmm/nouveau: add THP migration to migrate_vma_*
This series adds support for transparent huge page migration to
migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers.
An earlier version was posted previously [1]. This version now
supports splitting a THP midway in the migration process which
led to a number of changes.
The patches apply cleanly to the current linux-mm tree. Since there
are a couple of patches in linux-mm from Dan