linux-5.15/rmqueue_pcplist() の履歴(No.1)

• 履歴一覧
• 差分 を表示
• 現在との差分 を表示
• ソース を表示
• linux-5.15/rmqueue_pcplist() へ行く。
  • 1 (2025-09-13 (土) 01:32:14)

参照元†

• linux-5.15/rmqueue()

説明†

• パス: [[linux-5.15/]]

• FIXME: これは何？
  • 説明

引数†

返り値†

参考†

実装†

/* Lock and remove page from the per-cpu list */
static struct page *rmqueue_pcplist(struct zone *preferred_zone,
			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 batch freed.
	 * See nr_pcp_free() where free_factor is increased for subsequent
	 * 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, alloc_flags, pcp, list);
	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†