Displaying 20 results from an estimated 30 matches for "config_dev_pagemap_ops".
2020 Sep 16
0
[PATCH] mm: remove extra ZONE_DEVICE struct page refcount
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 517751310dd2..5a82037a4b26 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -1093,34 +1093,6 @@ static inline bool is_zone_device_page(const struct page *page)
> #ifdef CONFIG_DEV_PAGEMAP_OPS
> void free_devmap_managed_page(struct page *page);
> DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
The export for devmap_managed_key can be dropped now. In fact I think
we can remove devmap_managed_key entirely now - it is only checked in
the actual page free path instead of for each ref...
2020 Sep 17
0
[PATCH] mm: remove extra ZONE_DEVICE struct page refcount
...wrote:
>> diff --git a/include/linux/mm.h b/include/linux/mm.h
>> index 517751310dd2..5a82037a4b26 100644
>> --- a/include/linux/mm.h
>> +++ b/include/linux/mm.h
>> @@ -1093,34 +1093,6 @@ static inline bool is_zone_device_page(const struct page *page)
>> #ifdef CONFIG_DEV_PAGEMAP_OPS
>> void free_devmap_managed_page(struct page *page);
>> DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
>
> The export for devmap_managed_key can be dropped now. In fact I think
> we can remove devmap_managed_key entirely now - it is only checked in
> the actual page fre...
2020 Sep 14
5
[PATCH] mm: remove extra ZONE_DEVICE struct page refcount
...y management.
*/
void (*page_free)(struct page *page);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 517751310dd2..5a82037a4b26 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1093,34 +1093,6 @@ static inline bool is_zone_device_page(const struct page *page)
#ifdef CONFIG_DEV_PAGEMAP_OPS
void free_devmap_managed_page(struct page *page);
DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
-
-static inline bool page_is_devmap_managed(struct page *page)
-{
- if (!static_branch_unlikely(&devmap_managed_key))
- return false;
- if (!is_zone_device_page(page))
- return false;
- switch (...
2020 Sep 25
0
[PATCH 2/2] mm: remove extra ZONE_DEVICE struct page refcount
...*/
void (*page_free)(struct page *page);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index b2f370f0b420..2159c2477aa3 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1092,39 +1092,6 @@ static inline bool is_zone_device_page(const struct page *page)
}
#endif
-#ifdef CONFIG_DEV_PAGEMAP_OPS
-void free_devmap_managed_page(struct page *page);
-DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
-
-static inline bool page_is_devmap_managed(struct page *page)
-{
- if (!static_branch_unlikely(&devmap_managed_key))
- return false;
- if (!is_zone_device_page(page))
- return false;
- switch (...
2020 Oct 01
0
[RFC PATCH v3 2/2] mm: remove extra ZONE_DEVICE struct page refcount
...*/
void (*page_free)(struct page *page);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 27c64d0d7520..3d71a820ae38 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1100,39 +1100,6 @@ static inline bool is_zone_device_page(const struct page *page)
}
#endif
-#ifdef CONFIG_DEV_PAGEMAP_OPS
-void free_devmap_managed_page(struct page *page);
-DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
-
-static inline bool page_is_devmap_managed(struct page *page)
-{
- if (!static_branch_unlikely(&devmap_managed_key))
- return false;
- if (!is_zone_device_page(page))
- return false;
- switch (...
2020 Sep 26
1
[PATCH 2/2] mm: remove extra ZONE_DEVICE struct page refcount
...;
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index b2f370f0b420..2159c2477aa3 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -1092,39 +1092,6 @@ static inline bool is_zone_device_page(const struct page *page)
> }
> #endif
>
> -#ifdef CONFIG_DEV_PAGEMAP_OPS
> -void free_devmap_managed_page(struct page *page);
> -DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
> -
> -static inline bool page_is_devmap_managed(struct page *page)
> -{
> - if (!static_branch_unlikely(&devmap_managed_key))
> - return false;
> - if (!is_zone_device...
2020 Sep 25
6
[RFC PATCH v2 0/2] mm: remove extra ZONE_DEVICE struct page refcount
Matthew Wilcox, Ira Weiny, and others have complained that ZONE_DEVICE
struct page reference counting is ugly because they are "free" when the
reference count is one instead of zero. This leads to explicit checks
for ZONE_DEVICE pages in places like put_page(), GUP, THP splitting, and
page migration which have to adjust the expected reference count when
determining if the page is
2019 Jun 13
0
[PATCH 09/22] memremap: lift the devmap_enable manipulation into devm_memremap_pages
...&bb_res, &pmem->pgmap.res, sizeof(bb_res));
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0e8834ac32b7..edcf2b821647 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -921,8 +921,6 @@ static inline bool is_zone_device_page(const struct page *page)
#endif
#ifdef CONFIG_DEV_PAGEMAP_OPS
-void dev_pagemap_get_ops(void);
-void dev_pagemap_put_ops(void);
void __put_devmap_managed_page(struct page *page);
DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
static inline bool put_devmap_managed_page(struct page *page)
@@ -969,14 +967,6 @@ static inline bool is_pci_p2pdma_page(const struct...
2019 Jun 17
0
[PATCH 10/25] memremap: lift the devmap_enable manipulation into devm_memremap_pages
...&bb_res, &pmem->pgmap.res, sizeof(bb_res));
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0e8834ac32b7..edcf2b821647 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -921,8 +921,6 @@ static inline bool is_zone_device_page(const struct page *page)
#endif
#ifdef CONFIG_DEV_PAGEMAP_OPS
-void dev_pagemap_get_ops(void);
-void dev_pagemap_put_ops(void);
void __put_devmap_managed_page(struct page *page);
DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
static inline bool put_devmap_managed_page(struct page *page)
@@ -969,14 +967,6 @@ static inline bool is_pci_p2pdma_page(const struct...
2019 Jun 26
0
[PATCH 11/25] memremap: lift the devmap_enable manipulation into devm_memremap_pages
...&bb_res, &pmem->pgmap.res, sizeof(bb_res));
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6e4b9be08b13..aa3970291cdf 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -932,8 +932,6 @@ static inline bool is_zone_device_page(const struct page *page)
#endif
#ifdef CONFIG_DEV_PAGEMAP_OPS
-void dev_pagemap_get_ops(void);
-void dev_pagemap_put_ops(void);
void __put_devmap_managed_page(struct page *page);
DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
static inline bool put_devmap_managed_page(struct page *page)
@@ -973,14 +971,6 @@ static inline bool is_pci_p2pdma_page(const struct...
2019 Jun 26
1
[PATCH 11/25] memremap: lift the devmap_enable manipulation into devm_memremap_pages
...zeof(bb_res));
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 6e4b9be08b13..aa3970291cdf 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -932,8 +932,6 @@ static inline bool is_zone_device_page(const struct page *page)
> #endif
>
> #ifdef CONFIG_DEV_PAGEMAP_OPS
> -void dev_pagemap_get_ops(void);
> -void dev_pagemap_put_ops(void);
> void __put_devmap_managed_page(struct page *page);
> DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
> static inline bool put_devmap_managed_page(struct page *page)
> @@ -973,14 +971,6 @@ static inline bool i...
2020 Oct 01
8
[RFC PATCH v3 0/2] mm: remove extra ZONE_DEVICE struct page refcount
This is still an RFC because after looking at the pmem/dax code some
more, I realized that the ZONE_DEVICE struct pages are being inserted
into the process' page tables with vmf_insert_mixed() and a zero
refcount on the ZONE_DEVICE struct page. This is sort of OK because
insert_pfn() increments the reference count on the pgmap which is what
prevents memunmap_pages() from freeing the struct
2019 Jun 14
3
[PATCH 18/22] mm: mark DEVICE_PUBLIC as broken
...; DRM_NOUVEAU_SVM does use DEVICE_PRIVATE but not DEVICE_PUBLIC.
>
> Indeed you are correct, never mind
>
> Hum, so the only thing this config does is short circuit here:
>
> static inline bool is_device_public_page(const struct page *page)
> {
> return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
> IS_ENABLED(CONFIG_DEVICE_PUBLIC) &&
> is_zone_device_page(page) &&
> page->pgmap->type == MEMORY_DEVICE_PUBLIC;
> }
>
> Which is called all over the place..
<sigh> yes but the earlier pat...
2019 Jun 19
3
[PATCH 18/22] mm: mark DEVICE_PUBLIC as broken
...19 at 12:53:02PM -0700, Ralph Campbell wrote:
> >>>
> ...
> >> Hum, so the only thing this config does is short circuit here:
> >>
> >> static inline bool is_device_public_page(const struct page *page)
> >> {
> >> return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
> >> IS_ENABLED(CONFIG_DEVICE_PUBLIC) &&
> >> is_zone_device_page(page) &&
> >> page->pgmap->type == MEMORY_DEVICE_PUBLIC;
> >> }
> >>
> >> Which is called all ove...
2019 Jun 13
0
[PATCH 18/22] mm: mark DEVICE_PUBLIC as broken
...ng DEVICE_PRIVATE for DEVICE_PUBLIC.
> DRM_NOUVEAU_SVM does use DEVICE_PRIVATE but not DEVICE_PUBLIC.
Indeed you are correct, never mind
Hum, so the only thing this config does is short circuit here:
static inline bool is_device_public_page(const struct page *page)
{
return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
IS_ENABLED(CONFIG_DEVICE_PUBLIC) &&
is_zone_device_page(page) &&
page->pgmap->type == MEMORY_DEVICE_PUBLIC;
}
Which is called all over the place..
So, yes, we really don't want any distro or something to turn t...
2019 Jun 14
0
[PATCH 18/22] mm: mark DEVICE_PUBLIC as broken
...wrote:
>> On Thu, Jun 13, 2019 at 12:53:02PM -0700, Ralph Campbell wrote:
>>>
...
>> Hum, so the only thing this config does is short circuit here:
>>
>> static inline bool is_device_public_page(const struct page *page)
>> {
>> return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
>> IS_ENABLED(CONFIG_DEVICE_PUBLIC) &&
>> is_zone_device_page(page) &&
>> page->pgmap->type == MEMORY_DEVICE_PUBLIC;
>> }
>>
>> Which is called all over the place..
>
> <...
2019 Jun 13
1
[PATCH 18/22] mm: mark DEVICE_PUBLIC as broken
On 6/13/19 12:44 PM, Jason Gunthorpe wrote:
> On Thu, Jun 13, 2019 at 11:43:21AM +0200, Christoph Hellwig wrote:
>> The code hasn't been used since it was added to the tree, and doesn't
>> appear to actually be usable. Mark it as BROKEN until either a user
>> comes along or we finally give up on it.
>>
>> Signed-off-by: Christoph Hellwig <hch at
2019 Jun 13
2
[PATCH 18/22] mm: mark DEVICE_PUBLIC as broken
On Thu, Jun 13, 2019 at 11:43:21AM +0200, Christoph Hellwig wrote:
> The code hasn't been used since it was added to the tree, and doesn't
> appear to actually be usable. Mark it as BROKEN until either a user
> comes along or we finally give up on it.
>
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> mm/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
2019 Jun 13
0
[PATCH 10/22] memremap: add a migrate callback to struct dev_pagemap_ops
.../types.h>
#include <linux/wait_bit.h>
#include <linux/xarray.h>
-#include <linux/hmm.h>
static DEFINE_XARRAY(pgmap_array);
#define SECTION_MASK ~((1UL << PA_SECTION_SHIFT) - 1)
@@ -48,36 +47,6 @@ static inline int dev_pagemap_enable(struct device *dev)
}
#endif /* CONFIG_DEV_PAGEMAP_OPS */
-#if IS_ENABLED(CONFIG_DEVICE_PRIVATE)
-vm_fault_t device_private_entry_fault(struct vm_area_struct *vma,
- unsigned long addr,
- swp_entry_t entry,
- unsigned int flags,
- pmd_t *pmdp)
-{
- struct page *page = device_private_entry_to_page(entry);
- struct hmm_d...
2019 Jun 26
0
[PATCH 12/25] memremap: add a migrate_to_ram method to struct dev_pagemap_ops
...lt;linux/wait_bit.h>
#include <linux/xarray.h>
-#include <linux/hmm.h>
static DEFINE_XARRAY(pgmap_array);
#define SECTION_MASK ~((1UL << PA_SECTION_SHIFT) - 1)
@@ -46,36 +45,6 @@ static int devmap_managed_enable_get(struct device *dev, struct dev_pagemap *pgm
}
#endif /* CONFIG_DEV_PAGEMAP_OPS */
-#if IS_ENABLED(CONFIG_DEVICE_PRIVATE)
-vm_fault_t device_private_entry_fault(struct vm_area_struct *vma,
- unsigned long addr,
- swp_entry_t entry,
- unsigned int flags,
- pmd_t *pmdp)
-{
- struct page *page = device_private_entry_to_page(entry);
- struct hmm_d...