函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\vmstat.c Create Date:2022-07-27 15:47:16
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：pagetypeinfo_showfree_print

函数原型：static void pagetypeinfo_showfree_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone)

返回类型：void

参数：

类型参数名称
struct seq_file *m
pg_data_t *pgdat
struct zone *zone
1378  以mtype小于MIGRATE_TYPES循环
1379  seq_printf(m, "Node %4d, zone %8s, type %12s ", 全局结点ID, 内存域的惯用名称(NORMAL DMA HIGHMEM), In mm/page_alloc.c; keep in sync also with show_migration_types() there [mtype])
1383  以order小于Free memory management - zoned buddy allocator. 循环
1384  freecount等于0
1387  bool overflow = false
1389  area等于伙伴系统空闲内存页[order]的地址
1401  如果freecount先自加大于等于100000则
1402  overflow = true
1403  退出
1406  seq_printf(m, "%s%6lu ", overflow ? ">" : "", freecount)
1407  spin_unlock_irq( & 自旋锁)
1408  cond_resched()
1409  spin_lock_irq( & 自旋锁)
1411  seq_putc(m, '\n')