內存管理-初始化【代碼】
阿新 • • 發佈:2019-01-10
efault migrate led obi end ble ping ges mem
build_all_zonelists
該函數在系統初始化階段建立每個node下的zonelist結構
void build_all_zonelists(void) { set_zonelist_order(); if (system_state == SYSTEM_BOOTING) { __build_all_zonelists(NULL); mminit_verify_zonelist(); cpuset_init_current_mems_allowed(); } else { /* we have to stop all cpus to guarantee there is no user of zonelist */ stop_machine(__build_all_zonelists, NULL, NULL); /* cpuset refresh routine should be here */ } vm_total_pages = nr_free_pagecache_pages(); /* * Disable grouping by mobility if the number of pages in the * system is too low to allow the mechanism to work. It would be * more accurate, but expensive to check per-zone. This check is * made on memory-hotadd so a system can start with mobility * disabled and enable it later */ if (vm_total_pages < (pageblock_nr_pages * MIGRATE_TYPES)) page_group_by_mobility_disabled = 1; else page_group_by_mobility_disabled = 0; printk("Built %i zonelists in %s order, mobility grouping %s. " "Total pages: %ld\n", nr_online_nodes, zonelist_order_name[current_zonelist_order], page_group_by_mobility_disabled ? "off" : "on", vm_total_pages); #ifdef CONFIG_NUMA printk("Policy zone: %s\n", zone_names[policy_zone]); #endif }
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TODO1:default_zonelist_order,build_all_zonelists
內存管理-初始化【代碼】