Displaying 9 results from an estimated 9 matches for "fullness_mask".
2016 Mar 30
0
[PATCH v3 06/16] zsmalloc: squeeze inuse into page->mapping
...Usage of struct page flags:
* PG_private: identifies the first component page
@@ -132,6 +131,13 @@
/* each chunk includes extra space to keep handle */
#define ZS_MAX_ALLOC_SIZE PAGE_SIZE
+#define CLASS_BITS 8
+#define CLASS_MASK ((1 << CLASS_BITS) - 1)
+#define FULLNESS_BITS 2
+#define FULLNESS_MASK ((1 << FULLNESS_BITS) - 1)
+#define INUSE_BITS 11
+#define INUSE_MASK ((1 << INUSE_BITS) - 1)
+
/*
* On systems with 4K page size, this gives 255 size classes! There is a
* trader-off here:
@@ -145,7 +151,7 @@
* ZS_MIN_ALLOC_SIZE and ZS_SIZE_CLASS_DELTA must be multiple of ZS_AL...
2016 Mar 11
0
[PATCH v1 05/19] zsmalloc: use first_page rather than page
..._mapping(struct page *first_page,
+ unsigned int *class_idx,
enum fullness_group *fullness)
{
unsigned long m;
- BUG_ON(!is_first_page(page));
+ BUG_ON(!is_first_page(first_page));
- m = (unsigned long)page->mapping;
+ m = (unsigned long)first_page->mapping;
*fullness = m & FULLNESS_MASK;
*class_idx = (m >> FULLNESS_BITS) & CLASS_IDX_MASK;
}
-static void set_zspage_mapping(struct page *page, unsigned int class_idx,
+static void set_zspage_mapping(struct page *first_page,
+ unsigned int class_idx,
enum fullness_group fullness)
{
unsigned long m;
- BUG_ON(!i...
2016 Mar 11
0
[PATCH v1 06/19] zsmalloc: clean up many BUG_ON
...@@ -419,7 +419,7 @@ static void get_zspage_mapping(struct page *first_page,
enum fullness_group *fullness)
{
unsigned long m;
- BUG_ON(!is_first_page(first_page));
+ VM_BUG_ON_PAGE(!is_first_page(first_page), first_page);
m = (unsigned long)first_page->mapping;
*fullness = m & FULLNESS_MASK;
@@ -431,7 +431,7 @@ static void set_zspage_mapping(struct page *first_page,
enum fullness_group fullness)
{
unsigned long m;
- BUG_ON(!is_first_page(first_page));
+ VM_BUG_ON_PAGE(!is_first_page(first_page), first_page);
m = ((class_idx & CLASS_IDX_MASK) << FULLNESS_BITS) |...
2016 Mar 11
31
[PATCH v1 00/19] Support non-lru page migration
Recently, I got many reports about perfermance degradation
in embedded system(Android mobile phone, webOS TV and so on)
and failed to fork easily.
The problem was fragmentation caused by zram and GPU driver
pages. Their pages cannot be migrated so compaction cannot
work well, either so reclaimer ends up shrinking all of working
set pages. It made system very slow and even to fail to fork
easily.
2016 Mar 11
31
[PATCH v1 00/19] Support non-lru page migration
Recently, I got many reports about perfermance degradation
in embedded system(Android mobile phone, webOS TV and so on)
and failed to fork easily.
The problem was fragmentation caused by zram and GPU driver
pages. Their pages cannot be migrated so compaction cannot
work well, either so reclaimer ends up shrinking all of working
set pages. It made system very slow and even to fail to fork
easily.
2016 Mar 21
22
[PATCH v2 00/18] Support non-lru page migration
Recently, I got many reports about perfermance degradation
in embedded system(Android mobile phone, webOS TV and so on)
and failed to fork easily.
The problem was fragmentation caused by zram and GPU driver
pages. Their pages cannot be migrated so compaction cannot
work well, either so reclaimer ends up shrinking all of working
set pages. It made system very slow and even to fail to fork
easily.
2016 Mar 21
22
[PATCH v2 00/18] Support non-lru page migration
Recently, I got many reports about perfermance degradation
in embedded system(Android mobile phone, webOS TV and so on)
and failed to fork easily.
The problem was fragmentation caused by zram and GPU driver
pages. Their pages cannot be migrated so compaction cannot
work well, either so reclaimer ends up shrinking all of working
set pages. It made system very slow and even to fail to fork
easily.
2016 Mar 30
33
[PATCH v3 00/16] Support non-lru page migration
Recently, I got many reports about perfermance degradation
in embedded system(Android mobile phone, webOS TV and so on)
and failed to fork easily.
The problem was fragmentation caused by zram and GPU driver
pages. Their pages cannot be migrated so compaction cannot
work well, either so reclaimer ends up shrinking all of working
set pages. It made system very slow and even to fail to fork
easily.
2016 Mar 30
33
[PATCH v3 00/16] Support non-lru page migration
Recently, I got many reports about perfermance degradation
in embedded system(Android mobile phone, webOS TV and so on)
and failed to fork easily.
The problem was fragmentation caused by zram and GPU driver
pages. Their pages cannot be migrated so compaction cannot
work well, either so reclaimer ends up shrinking all of working
set pages. It made system very slow and even to fail to fork
easily.