linux-5.15/rmqueue_pcplist()
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開始行:
*参照元 [#a52ec13c]
#backlinks
*説明 [#tfd57c9c]
-パス: [[linux-5.15/mm/page_alloc.c]]
-FIXME: これは何？
--説明
**引数 [#f8a5d39b]
-struct zone *preferred_zone
--
--[[linux-5.15/zone]]
-struct zone *zone
--
--[[linux-5.15/zone]]
-unsigned int order
--
-gfp_t gfp_flags
--
--[[linux-5.15/gfp_t]]
-int migratetype
--
-unsigned int alloc_flags
--
**返り値 [#n03d1e20]
-struct page *
--
--[[linux-5.15/page]]
**参考 [#z5eb9679]
*実装 [#g08b66e1]
/* Lock and remove page from the per-cpu list */
static struct page *rmqueue_pcplist(struct zone *preferr...
struct zone *zone, unsigned int order,
gfp_t gfp_flags, int migratetype,
unsigned int alloc_flags)
{
struct per_cpu_pages *pcp;
struct list_head *list;
struct page *page;
unsigned long flags;
local_lock_irqsave(&pagesets.lock, flags);
-
--[[linux-5.15/per_cpu_pages]]
--[[linux-5.15/list_head]]
--[[linux-5.15/page]]
--[[linux-5.15/local_lock_irqsave()]]
/*
* On allocation, reduce the number of pages that are b...
* See nr_pcp_free() where free_factor is increased for...
* frees.
*/
pcp = this_cpu_ptr(zone->per_cpu_pageset);
pcp->free_factor >>= 1;
list = &pcp->lists[order_to_pindex(migratetype, order)];
page = __rmqueue_pcplist(zone, order, migratetype, allo...
local_unlock_irqrestore(&pagesets.lock, flags);
if (page) {
__count_zid_vm_events(PGALLOC, page_zonenum(page), 1);
zone_statistics(preferred_zone, zone, 1);
}
return page;
}
-
--[[linux-5.15/this_cpu_ptr()]]
--[[linux-5.15/order_to_pindex()]]
--[[linux-5.15/__rmqueue_pcplist()]]
--[[linux-5.15/local_unlock_irqrestore()]]
--[[linux-5.15/__count_zid_vm_events()]]
--[[linux-5.15/page_zonenum()]]
--[[linux-5.15/zone_statistics()]]
*コメント [#nddd711d]
終了行:
*参照元 [#a52ec13c]
#backlinks
*説明 [#tfd57c9c]
-パス: [[linux-5.15/mm/page_alloc.c]]
-FIXME: これは何？
--説明
**引数 [#f8a5d39b]
-struct zone *preferred_zone
--
--[[linux-5.15/zone]]
-struct zone *zone
--
--[[linux-5.15/zone]]
-unsigned int order
--
-gfp_t gfp_flags
--
--[[linux-5.15/gfp_t]]
-int migratetype
--
-unsigned int alloc_flags
--
**返り値 [#n03d1e20]
-struct page *
--
--[[linux-5.15/page]]
**参考 [#z5eb9679]
*実装 [#g08b66e1]
/* Lock and remove page from the per-cpu list */
static struct page *rmqueue_pcplist(struct zone *preferr...
struct zone *zone, unsigned int order,
gfp_t gfp_flags, int migratetype,
unsigned int alloc_flags)
{
struct per_cpu_pages *pcp;
struct list_head *list;
struct page *page;
unsigned long flags;
local_lock_irqsave(&pagesets.lock, flags);
-
--[[linux-5.15/per_cpu_pages]]
--[[linux-5.15/list_head]]
--[[linux-5.15/page]]
--[[linux-5.15/local_lock_irqsave()]]
/*
* On allocation, reduce the number of pages that are b...
* See nr_pcp_free() where free_factor is increased for...
* frees.
*/
pcp = this_cpu_ptr(zone->per_cpu_pageset);
pcp->free_factor >>= 1;
list = &pcp->lists[order_to_pindex(migratetype, order)];
page = __rmqueue_pcplist(zone, order, migratetype, allo...
local_unlock_irqrestore(&pagesets.lock, flags);
if (page) {
__count_zid_vm_events(PGALLOC, page_zonenum(page), 1);
zone_statistics(preferred_zone, zone, 1);
}
return page;
}
-
--[[linux-5.15/this_cpu_ptr()]]
--[[linux-5.15/order_to_pindex()]]
--[[linux-5.15/__rmqueue_pcplist()]]
--[[linux-5.15/local_unlock_irqrestore()]]
--[[linux-5.15/__count_zid_vm_events()]]
--[[linux-5.15/page_zonenum()]]
--[[linux-5.15/zone_statistics()]]
*コメント [#nddd711d]
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