linux-5.15/__rmqueue_pcplist()
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開始行:
*参照元 [#aff2b156]
#backlinks
*説明 [#kcf67e76]
-パス: [[linux-5.15/mm/page_alloc.c]]
-FIXME: これは何？
--説明
**引数 [#c24b9195]
-struct zone *zone
--
--[[linux-5.15/zone]]
-unsigned int order
--
-int migratetype
--
-unsigned int alloc_flags
--
-struct per_cpu_pages *pcp
--
--[[linux-5.15/per_cpu_pages]]
-struct list_head *list
--
--[[linux-5.15/list_head]]
**返り値 [#tc1d50a3]
-struct page *
--
--[[linux-5.15/page]]
**参考 [#l601bc98]
*実装 [#ga564ae3]
/* Remove page from the per-cpu list, caller must protec...
static inline
struct page *__rmqueue_pcplist(struct zone *zone, unsign...
int migratetype,
unsigned int alloc_flags,
struct per_cpu_pages *pcp,
struct list_head *list)
{
struct page *page;
do {
if (list_empty(list)) {
int batch = READ_ONCE(pcp->batch);
int alloced;
-
--[[linux-5.15/page]]
--[[linux-5.15/list_empty()]]
--[[linux-5.15/READ_ONCE()]]
/*
* Scale batch relative to order if batch implies
* free pages can be stored on the PCP. Batch can
* be 1 for small zones or for boot pagesets which
* should never store free pages as the pages may
* belong to arbitrary zones.
*/
if (batch > 1)
batch = max(batch >> order, 2);
alloced = rmqueue_bulk(zone, order,
batch, list,
migratetype, alloc_flags);
pcp->count += alloced << order;
if (unlikely(list_empty(list)))
return NULL;
}
-
--[[linux-5.15/rmqueue_bulk()]]
--[[linux-5.15/unlikely()]]
--[[linux-5.15/list_empty()]]
page = list_first_entry(list, struct page, lru);
list_del(&page->lru);
pcp->count -= 1 << order;
} while (check_new_pcp(page));
return page;
}
-
--[[linux-5.15/list_first_entry()]]
--[[linux-5.15/list_del()]]
--[[linux-5.15/check_new_pcp()]]
*コメント [#h187e972]
終了行:
*参照元 [#aff2b156]
#backlinks
*説明 [#kcf67e76]
-パス: [[linux-5.15/mm/page_alloc.c]]
-FIXME: これは何？
--説明
**引数 [#c24b9195]
-struct zone *zone
--
--[[linux-5.15/zone]]
-unsigned int order
--
-int migratetype
--
-unsigned int alloc_flags
--
-struct per_cpu_pages *pcp
--
--[[linux-5.15/per_cpu_pages]]
-struct list_head *list
--
--[[linux-5.15/list_head]]
**返り値 [#tc1d50a3]
-struct page *
--
--[[linux-5.15/page]]
**参考 [#l601bc98]
*実装 [#ga564ae3]
/* Remove page from the per-cpu list, caller must protec...
static inline
struct page *__rmqueue_pcplist(struct zone *zone, unsign...
int migratetype,
unsigned int alloc_flags,
struct per_cpu_pages *pcp,
struct list_head *list)
{
struct page *page;
do {
if (list_empty(list)) {
int batch = READ_ONCE(pcp->batch);
int alloced;
-
--[[linux-5.15/page]]
--[[linux-5.15/list_empty()]]
--[[linux-5.15/READ_ONCE()]]
/*
* Scale batch relative to order if batch implies
* free pages can be stored on the PCP. Batch can
* be 1 for small zones or for boot pagesets which
* should never store free pages as the pages may
* belong to arbitrary zones.
*/
if (batch > 1)
batch = max(batch >> order, 2);
alloced = rmqueue_bulk(zone, order,
batch, list,
migratetype, alloc_flags);
pcp->count += alloced << order;
if (unlikely(list_empty(list)))
return NULL;
}
-
--[[linux-5.15/rmqueue_bulk()]]
--[[linux-5.15/unlikely()]]
--[[linux-5.15/list_empty()]]
page = list_first_entry(list, struct page, lru);
list_del(&page->lru);
pcp->count -= 1 << order;
} while (check_new_pcp(page));
return page;
}
-
--[[linux-5.15/list_first_entry()]]
--[[linux-5.15/list_del()]]
--[[linux-5.15/check_new_pcp()]]
*コメント [#h187e972]
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