基于msm-5.4
一、vm_zone_stat[]
基础调用路径：
clear_page_mlock //mlock.c 传参 (.., NR_MLOCK, ..)
mlock_vma_page //mlock.c 传参 (.., NR_MLOCK, ..)
account_kernel_stack //fork.c 传参 (.., NR_KERNEL_STACK_KB, ..)
scs_account //scs.c 传参 (.., NR_KERNEL_SCS_BYTES, ..)
mod_zone_page_state //vmstat.h
__mod_zone_freepage_state //vmstat.h 传参: (zone, NR_FREE_PAGES, nr_pages)
__mod_zone_freepage_state //vmstat.h 传参: (zone, NR_FREE_CMA_PAGES, nr_pages)
munlock_vma_page //mlock.c 传参: (page_zone(page), NR_MLOCK, -nr_pages)
__munlock_pagevec //mlock.c 传参: (zone, NR_MLOCK, delta_munlocked)
rmqueue_bulk //page_alloc.c 传参: (zone, NR_FREE_CMA_PAGES, -(1 << order))
rmqueue_bulk //page_alloc.c 传参: (zone, NR_FREE_PAGES, -(i << order))
__lru_cache_add_active_or_unevictable //swap.c 传参: (.., NR_MLOCK, ..)
mlock_migrate_page //mm/internal.h 传参: (page_zone(page), NR_MLOCK, -nr_pages)
mlock_migrate_page //mm/internal.h 传参: (page_zone(newpage), NR_MLOCK, nr_pages)
__update_lru_size //mm_inline.h 传参: (.., NR_ZONE_LRU_BASE, ..)
__mod_zone_page_state //vmstat.c
__inc_zone_state //vmstat.c
__dec_zone_state //vmstat.c 见其它路径
mod_zone_state //vmstat.c
zone_page_state_add //vmstat.h //可能不是这里
atomic_long_add(x, &vm_zone_stat[item]);
account_page_cleaned //page-writeback.c 传参: (page, NR_ZONE_WRITE_PENDING)
clear_page_dirty_for_io //page-writeback.c 传参: (page, NR_ZONE_WRITE_PENDING)
test_clear_page_writeback //page-writeback.c 传参: (page, NR_ZONE_WRITE_PENDING)
__free_zspage //zsmalloc.c 传参:(page, NR_ZSPAGES)
alloc_zspage //zsmalloc.c 传参:(pages[i], NR_ZSPAGES)
zs_page_migrate //zsmalloc.c 传参:(page, NR_ZSPAGES)
bounce_end_io //block/bounce.c 传参:(bvec->bv_page, NR_BOUNCE) CONFIG_BOUNCE 默认不使能
pgtable_pte_page_dtor //linux/mm.h 传参:(page, NR_PAGETABLE)
dec_zone_page_state //vmstat.c 关本地中断调用
__dec_zone_page_state //vmstat.c
migrate_page_move_mapping //migrate.c 传参:(oldzone->zone_pgdat, NR_FILE_PAGES)
__dec_zone_state //vmstat.h
atomic_long_dec(&vm_zone_stat[item])
refresh_cpu_vm_stats(do_pagesets) //vmstat.c
cpu_vm_stats_fold(cpu) //vmstat.c
fold_diff(int *zone_diff, int *node_diff) //vmstat.c
atomic_long_add(zone_diff[i], &vm_zone_stat[i]);
zone_pcp_reset(zone) //page_alloc.c
drain_zonestat(struct zone *zone, struct per_cpu_pageset *pset) //vmstat.c
atomic_long_add(v, &vm_zone_stat[i]);
1.1. NR_FREE_PAGES 统计
set_migratetype_isolate //page_isolation.c 传参:(zone, -nr_pages, mt) 将isolate的page移除
unset_migratetype_isolate //page_isolation.c 传参: (zone, nr_pages, migratetype) 将unisolate的page加上
set_page_guard //page_alloc.c 将用于guard的page从统计中移除
clear_page_guard //page_alloc.c 将从guard取消的page加入统计中
free_pcppages_bulk //page_alloc.c
free_one_page //page_alloc.c
__free_one_page //page_alloc.c 将free的page加入到统计中
__isolate_free_page //page_alloc.c 将isolate的page从统计中移除
get_page_from_freelist //page_alloc.c
rmqueue //page_alloc.c 将从buddy中分配走的page从统计中移除
__mod_zone_freepage_state //vmstat.h 传参: (zone, NR_FREE_PAGES, nr_pages)
rmqueue_bulk //page_alloc.c 传参: (zone, NR_FREE_PAGES, -(i << order))
__mod_zone_page_state //vmstat.c
zone_page_state_add //vmstat.h //可能不是这里
atomic_long_add(x, &vm_zone_stat[item]);
vm_zone_stat[NR_FREE_PAGES] 应该表示伙伴系统中空闲页面的数量。
cat /proc/meminfo 中的"MemFree" 字段显示的就是 vm_zone_stat[NR_FREE_PAGES]。cat /proc/vmstat 的 "nr_free_pages" 字段显示的也是它.
标签：传参,alloc,zone,含义,35,vmstat,内存,NR,page From： https://www.cnblogs.com/hellokitty2/p/18415605